subject:(droplet impact)

York University

1. Banitabaei, Sayed Abdolhossein. Droplet Impact onto a Spherical Particle in Mid-Air.

Degree: PhD, Mechanical Engineering, 2019, York University

URL: https://yorkspace.library.yorku.ca/xmlui/handle/10315/36805

► Collision between a droplet and a particle has a wide range of applications in chemical and petrochemical industries, polyethylene synthesis, and particle coating. Various studies… (more)

▼ Collision between a droplet and a particle has a wide range of applications in chemical and petrochemical industries, polyethylene synthesis, and particle coating. Various studies in the literature indicate that the collision products are very different depending on the size and velocity of the particle and droplet, particle wettability and roughness, and physical properties of the liquid and the surrounding gas. The collision outcome is a liquid film (i.e. lamella) and the objective of this thesis is to identify various impact products in different conditions and to study how each category of the above mentioned parameters or a combination of them affect the lamella formation. Investigation of the droplet impact was divided into two parts: drop impact onto a still particle, and droplet impact onto a moving particle in mid-air. Contribution of this thesis to the field can be summarized as following. First, studying the impact phenomenon in a wider range of both Weber number (0.1<We<1146) and droplet-to-particle diameter ratio (1.4<Dr<5.0) compared to what already exists in the literature. Both experimental and numerical tools were developed and used to study the head-on impact between a droplet and a particle. Second, studying the effect of impact velocity, particle wettability, and the amount that each of these parameter contributes on collision outcomes. The required conditions for a lamella to be formed was also studied, and how the lamella geometry changes in case the impact velocity is changed, or hydrophilic/hydrophobic types of particles are used. Third, investigation of the effect of liquid viscosity on lamella formation; what the dynamics of the liquid is inside the film, and how the fluid field inside the lamella is affected by the viscosity changes. Fourth, identifying the role of ambient gas in lamella formation and how each of the drag and lift forces contribute in creating the liquid film. Fifth, developing a pneumatic droplet generator capable of producing single drops with various droplet sizes. The breakup phenomenon in the nozzle and droplet velocity upon pinch-off were also investigated in detail. Advisors/Committee Members: Amirfazli, Alidad (advisor).

Subjects/Keywords: Mechanical engineering; Droplet impact; Droplet impact onto a particle; Droplet impingement; Droplet impact onto curved surfaces; Droplet and particle collision

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Banitabaei, S. A. (2019). Droplet Impact onto a Spherical Particle in Mid-Air. (Doctoral Dissertation). York University. Retrieved from https://yorkspace.library.yorku.ca/xmlui/handle/10315/36805

Chicago Manual of Style (16^th Edition):

Banitabaei, Sayed Abdolhossein. “Droplet Impact onto a Spherical Particle in Mid-Air.” 2019. Doctoral Dissertation, York University. Accessed April 14, 2021. https://yorkspace.library.yorku.ca/xmlui/handle/10315/36805.

MLA Handbook (7^th Edition):

Banitabaei, Sayed Abdolhossein. “Droplet Impact onto a Spherical Particle in Mid-Air.” 2019. Web. 14 Apr 2021.

Vancouver:

Banitabaei SA. Droplet Impact onto a Spherical Particle in Mid-Air. [Internet] [Doctoral dissertation]. York University; 2019. [cited 2021 Apr 14]. Available from: https://yorkspace.library.yorku.ca/xmlui/handle/10315/36805.

Council of Science Editors:

Banitabaei SA. Droplet Impact onto a Spherical Particle in Mid-Air. [Doctoral Dissertation]. York University; 2019. Available from: https://yorkspace.library.yorku.ca/xmlui/handle/10315/36805

York University

2. Banitabaei, Sayed Abdolhossein. Droplet Impact onto a Spherical Particle in Mid-Air.

Degree: PhD, Mechanical Engineering, 2019, York University

URL: http://hdl.handle.net/10315/36805

► Collision between a droplet and a particle has a wide range of applications in chemical and petrochemical industries, polyethylene synthesis, and particle coating. Various studies… (more)

▼ Collision between a droplet and a particle has a wide range of applications in chemical and petrochemical industries, polyethylene synthesis, and particle coating. Various studies in the literature indicate that the collision products are very different depending on the size and velocity of the particle and droplet, particle wettability and roughness, and physical properties of the liquid and the surrounding gas. The collision outcome is a liquid film (i.e. lamella) and the objective of this thesis is to identify various impact products in different conditions and to study how each category of the above mentioned parameters or a combination of them affect the lamella formation. Investigation of the droplet impact was divided into two parts: drop impact onto a still particle, and droplet impact onto a moving particle in mid-air. Contribution of this thesis to the field can be summarized as following. First, studying the impact phenomenon in a wider range of both Weber number (0.1<We<1146) and droplet-to-particle diameter ratio (1.4<Dr<5.0) compared to what already exists in the literature. Both experimental and numerical tools were developed and used to study the head-on impact between a droplet and a particle. Second, studying the effect of impact velocity, particle wettability, and the amount that each of these parameter contributes on collision outcomes. The required conditions for a lamella to be formed was also studied, and how the lamella geometry changes in case the impact velocity is changed, or hydrophilic/hydrophobic types of particles are used. Third, investigation of the effect of liquid viscosity on lamella formation; what the dynamics of the liquid is inside the film, and how the fluid field inside the lamella is affected by the viscosity changes. Fourth, identifying the role of ambient gas in lamella formation and how each of the drag and lift forces contribute in creating the liquid film. Fifth, developing a pneumatic droplet generator capable of producing single drops with various droplet sizes. The breakup phenomenon in the nozzle and droplet velocity upon pinch-off were also investigated in detail. Advisors/Committee Members: Amirfazli, Alidad (advisor).

Subjects/Keywords: Mechanical engineering; Droplet impact; Droplet impact onto a particle; Droplet impingement; Droplet impact onto curved surfaces; Droplet and particle collision

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Banitabaei, S. A. (2019). Droplet Impact onto a Spherical Particle in Mid-Air. (Doctoral Dissertation). York University. Retrieved from http://hdl.handle.net/10315/36805

Chicago Manual of Style (16^th Edition):

Banitabaei, Sayed Abdolhossein. “Droplet Impact onto a Spherical Particle in Mid-Air.” 2019. Doctoral Dissertation, York University. Accessed April 14, 2021. http://hdl.handle.net/10315/36805.

MLA Handbook (7^th Edition):

Banitabaei, Sayed Abdolhossein. “Droplet Impact onto a Spherical Particle in Mid-Air.” 2019. Web. 14 Apr 2021.

Vancouver:

Banitabaei SA. Droplet Impact onto a Spherical Particle in Mid-Air. [Internet] [Doctoral dissertation]. York University; 2019. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10315/36805.

Council of Science Editors:

Banitabaei SA. Droplet Impact onto a Spherical Particle in Mid-Air. [Doctoral Dissertation]. York University; 2019. Available from: http://hdl.handle.net/10315/36805

Harvard University

3. Kolinski, John Martin. The role of air in droplet impact on a smooth, solid surface.

Degree: PhD, Engineering and Applied Sciences, 2014, Harvard University

URL: http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064817

►

The impact of liquid drops on solid surfaces is a ubiquitous phenomenon in our everyday experience; nevertheless, a general understanding of the dynamics governing droplet… (more)

Subjects/Keywords: Mechanics; Applied Physics; Droplet impact

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APA (6^th Edition):

Kolinski, J. M. (2014). The role of air in droplet impact on a smooth, solid surface. (Doctoral Dissertation). Harvard University. Retrieved from http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064817

Chicago Manual of Style (16^th Edition):

Kolinski, John Martin. “The role of air in droplet impact on a smooth, solid surface.” 2014. Doctoral Dissertation, Harvard University. Accessed April 14, 2021. http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064817.

MLA Handbook (7^th Edition):

Kolinski, John Martin. “The role of air in droplet impact on a smooth, solid surface.” 2014. Web. 14 Apr 2021.

Vancouver:

Kolinski JM. The role of air in droplet impact on a smooth, solid surface. [Internet] [Doctoral dissertation]. Harvard University; 2014. [cited 2021 Apr 14]. Available from: http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064817.

Council of Science Editors:

Kolinski JM. The role of air in droplet impact on a smooth, solid surface. [Doctoral Dissertation]. Harvard University; 2014. Available from: http://nrs.harvard.edu/urn-3:HUL.InstRepos:13064817

University of Illinois – Chicago

4. Russo, Antonio. Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces.

Degree: 2016, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/21361

► The analysis of droplet impact on micro-structured surfaces is a very challenging problem since it involves several physical phenomena interacting with one each other at… (more)

Subjects/Keywords: Numerical simulations; Droplet impact; Wettability-patterned surfaces.

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APA (6^th Edition):

Russo, A. (2016). Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/21361

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Russo, Antonio. “Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces.” 2016. Thesis, University of Illinois – Chicago. Accessed April 14, 2021. http://hdl.handle.net/10027/21361.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Russo, Antonio. “Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces.” 2016. Web. 14 Apr 2021.

Vancouver:

Russo A. Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces. [Internet] [Thesis]. University of Illinois – Chicago; 2016. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10027/21361.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Russo A. Numerical Simulation of Droplet Impact on Wettability-Patterned Surfaces. [Thesis]. University of Illinois – Chicago; 2016. Available from: http://hdl.handle.net/10027/21361

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Chicago

5. Elsharkawy, Mohamed. Study of Effects of Surface Wettability on Frosting and Droplet Manipulation.

Degree: 2018, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/22641

► The impact and subsequent freezing of water droplets on solid surfaces is a common mechanism for surface icing and frosting. We investigate this mechanism by… (more)

Subjects/Keywords: wettability; superhydrophobicity; droplet impact; icing; frosting

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APA (6^th Edition):

Elsharkawy, M. (2018). Study of Effects of Surface Wettability on Frosting and Droplet Manipulation. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/22641

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Elsharkawy, Mohamed. “Study of Effects of Surface Wettability on Frosting and Droplet Manipulation.” 2018. Thesis, University of Illinois – Chicago. Accessed April 14, 2021. http://hdl.handle.net/10027/22641.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Elsharkawy, Mohamed. “Study of Effects of Surface Wettability on Frosting and Droplet Manipulation.” 2018. Web. 14 Apr 2021.

Vancouver:

Elsharkawy M. Study of Effects of Surface Wettability on Frosting and Droplet Manipulation. [Internet] [Thesis]. University of Illinois – Chicago; 2018. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10027/22641.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Elsharkawy M. Study of Effects of Surface Wettability on Frosting and Droplet Manipulation. [Thesis]. University of Illinois – Chicago; 2018. Available from: http://hdl.handle.net/10027/22641

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Iowa State University

6. Li, Haixing. Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena.

Degree: 2017, Iowa State University

URL: https://lib.dr.iastate.edu/etd/15564

► Aircraft icing is widely recognized as a significant hazard to aircraft operations in cold weather. When an aircraft or rotorcraft fly in a cold climate,… (more)

▼ Aircraft icing is widely recognized as a significant hazard to aircraft operations in cold weather. When an aircraft or rotorcraft fly in a cold climate, some of the super-cooled water droplets would impact and freeze on the exposed aircraft surfaces to form ice shapes, which can degrade the aerodynamic performance of an airplane significantly by decreasing lift while increasing drag, and even lead to the aircraft crash. In the present study, a series of experimental investigations were conducted to investigate dynamics and thermodynamics of in-flight and impinging water droplets in order to elucidate the underlying physics of the important microphysical process pertinent to aircraft icing phenomena. A novel lifetime-based molecular tagging thermometry technique (MTT) is developed to achieve simultaneous measurements of droplet size, flying velocity and transient temperature of in-flight water droplets to characterize the dynamic and thermodynamic behaviors of the micro-sized in-flight droplets pertinent to aircraft icing phenomena. By using high-speed imaging and infrared thermal imaging techniques, a comprehensive experimental study was conducted to quantify the unsteady heat transfer and phase changing processes as water droplets impinging onto frozen cold surfaces under different test conditions (i.e., with different Weber numbers, Reynolds numbers, and impact angles of the impinging droplets, different temperature, hydrophobicity and roughness of the test plates) to simulate the scenario of super-cooled water droplets impinging onto the frozen cold wing surfaces. A novel digital image projector (DIP) technique was also developed to achieve time-resolved film thickness measurements to quantify the dynamic impinging process of water droplets (i.e., droplet impact, rebounding, splashing and freezing process). An impact droplet maximum spreading diameter model and a damped harmonic oscillator model was proposed based on precise measurement of the impact droplet 3D shape. A better understanding of the important micro physical processes pertinent to aircraft icing phenomena would lead to better ice accretion models for more accurate prediction of ice formation and accretion on aircraft wings as well as develop more effective and robust anti-/de-icing strategies for safer and more efficient operation of aircraft in cold weather.

Subjects/Keywords: 3-D shape reconstruction of impact droplet; Aircraft icing; Droplet impact dynamics; Droplet impact on super-hydrophobic surface; In-flight droplets temperature measurement; Aerospace Engineering

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Li, H. (2017). Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/15564

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Li, Haixing. “Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena.” 2017. Thesis, Iowa State University. Accessed April 14, 2021. https://lib.dr.iastate.edu/etd/15564.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Li, Haixing. “Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena.” 2017. Web. 14 Apr 2021.

Vancouver:

Li H. Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena. [Internet] [Thesis]. Iowa State University; 2017. [cited 2021 Apr 14]. Available from: https://lib.dr.iastate.edu/etd/15564.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Li H. Experimental studies on the dynamics of in-flight and impacting water droplets pertinent to aircraft icing phenomena. [Thesis]. Iowa State University; 2017. Available from: https://lib.dr.iastate.edu/etd/15564

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

7. Xu, Yang. Normal impact of liquid droplets on smooth solid surfaces : Impact normal des gouttelettes liquides sur les surfaces solides lisses.

Degree: Docteur es, Mécanique, 2018, Université Paris-Est

URL: http://www.theses.fr/2018PESC1099

►

Dans le cadre de la modélisation et de l’expérimentation multi-échelles (projet LabEx MMCD pour les matériaux pour la construction durable) de l’Université Paris-Est Marne-la-Vallée, cette… (more)

▼

Dans le cadre de la modélisation et de l’expérimentation multi-échelles (projet LabEx MMCD pour les matériaux pour la construction durable) de l’Université Paris-Est Marne-la-Vallée, cette thèse de doctorat vise à modéliser et caractériser les micro-matériaux conçus par impact de gouttelettes de céramique fondue. Les applications de ces matériaux revétus de couches minces sont des traitements de surface pour la construction durable tels que la protection anti-corrosion, les barrières thermiques, le traitement du verre ou les renforts mécaniques. En particulier, nous nous concentrons sur la physique associée à la dynamique des gouttelettes liquides (l'aire de contact et le temps de contact entre la gouttelette et la surface) en effectuant une série de simulations numériques pour les écoulements diphasiques à petite échelle avec le code maison Thetis. Nous avons considéré des variations des conditions d'impact initiales ainsi que l’influence des forces d'inertie, capillaire et visqueuses sur la dynamique des gouttelettes. Nous nous sommes intéressés en particulier au diamètre d'étalement maximal, au temps d’étalement maximal et au temps de contact, sur des surfaces solides de mouillabilité variable. Le code est basé sur l’utilisation d’une méthode Volume-Of-Fluid. Il introduit une fonction auxiliaire régularisée pour estimer la courbure locale et la normale à l'interface. Les principaux liquides de référence adoptés sont l'eau et la céramique fondue, l'eau est choisie pour valider notre code en comparant les simulations aux résultats expérimentaux. La céramique fondue est adoptée car elle est largement utilisée en projection thermique pour créer des barrières thermiques et chimiques (couches anti-oxydantes) ainsi que des renforts mécaniques sur des échantillons spécifiques. Nous nous concentrons sur les cas où les surfaces sont hydrophobes, même si les cas hydrophiles sont également considérés dans les configurations de validation pour des raisons de généralité. Egalement, en introduisant une partie de calcul de l'énergie dans la thèse, une analyse énergétique détaillée de la gouttelette après l'impact est effectuée dans les phases d'étalement et de rétraction pour bien comprendre la dynamique à l'intérieur de la gouttelette. Nous trouvons que le temps de projection est inversement proportionnel à la vitesse d’impact, indépendamment de l’angle de contact lors de l’étalement au temps courts. Une nouvelle mise à l'échelle entre l'étalement maximal et le temps d'étalement est proposée. Celle-ci s'accorde très bien avec les résultats expérimentaux. Par ailleurs, nous introduisons cette mise à l’échelle dans une classe de modèle basée sur la conservation de l’énergie pour prédire l’étalement maximal adimensionné, ce qui permet de mieux prévoir l’étalement maximal adimensionné. Pour finir, une mise à l'échelle du temps de contact est proposée en termes de nombre d'Ohnesorge et de Reynolds

Under the framework of the LabEx Multi-Scale Modelling and Experimentation of Materials for Sustainable Construction, of Université…

Advisors/Committee Members: Hé, Qi-Chang (thesis director), Vincent, Stéphane (thesis director).

Subjects/Keywords: VOF Simulation; Impact des gouttelettes; Analyse énergétique; VOF Simulation; Droplet impact; Energetic analysis

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Xu, Y. (2018). Normal impact of liquid droplets on smooth solid surfaces : Impact normal des gouttelettes liquides sur les surfaces solides lisses. (Doctoral Dissertation). Université Paris-Est. Retrieved from http://www.theses.fr/2018PESC1099

Chicago Manual of Style (16^th Edition):

Xu, Yang. “Normal impact of liquid droplets on smooth solid surfaces : Impact normal des gouttelettes liquides sur les surfaces solides lisses.” 2018. Doctoral Dissertation, Université Paris-Est. Accessed April 14, 2021. http://www.theses.fr/2018PESC1099.

MLA Handbook (7^th Edition):

Xu, Yang. “Normal impact of liquid droplets on smooth solid surfaces : Impact normal des gouttelettes liquides sur les surfaces solides lisses.” 2018. Web. 14 Apr 2021.

Vancouver:

Xu Y. Normal impact of liquid droplets on smooth solid surfaces : Impact normal des gouttelettes liquides sur les surfaces solides lisses. [Internet] [Doctoral dissertation]. Université Paris-Est; 2018. [cited 2021 Apr 14]. Available from: http://www.theses.fr/2018PESC1099.

Council of Science Editors:

Xu Y. Normal impact of liquid droplets on smooth solid surfaces : Impact normal des gouttelettes liquides sur les surfaces solides lisses. [Doctoral Dissertation]. Université Paris-Est; 2018. Available from: http://www.theses.fr/2018PESC1099

Mississippi State University

8. Blake, Joshua Daniel. Simulation of the impact and solidification of supercooled water droplets.

Degree: MS, Aerospace Engineering, 2013, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11012013-100135/ ;

► In order to study in-flight ice adhesion at the droplet-scale, a strategy is presented to simulate the impact and solidification of a supercooled water… (more)

Subjects/Keywords: icing; superhydrophobicity; icephobicity; SLD; solidification; droplet impact; numerical simulation; CFD

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Blake, J. D. (2013). Simulation of the impact and solidification of supercooled water droplets. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-11012013-100135/ ;

Chicago Manual of Style (16^th Edition):

Blake, Joshua Daniel. “Simulation of the impact and solidification of supercooled water droplets.” 2013. Masters Thesis, Mississippi State University. Accessed April 14, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-11012013-100135/ ;.

MLA Handbook (7^th Edition):

Blake, Joshua Daniel. “Simulation of the impact and solidification of supercooled water droplets.” 2013. Web. 14 Apr 2021.

Vancouver:

Blake JD. Simulation of the impact and solidification of supercooled water droplets. [Internet] [Masters thesis]. Mississippi State University; 2013. [cited 2021 Apr 14]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11012013-100135/ ;.

Council of Science Editors:

Blake JD. Simulation of the impact and solidification of supercooled water droplets. [Masters Thesis]. Mississippi State University; 2013. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-11012013-100135/ ;

University of Toronto

9. Hosseini, Saman. Droplet Impact and Penetration onto Structured Pore Network Geometries.

Degree: PhD, 2015, University of Toronto

URL: http://hdl.handle.net/1807/70787

► The impact of the water droplet on permeable substrate has been studied experimentally and numerically. Reynolds number (Re) and Weber number (We) are found to… (more)

▼ The impact of the water droplet on permeable substrate has been studied experimentally and numerically. Reynolds number (Re) and Weber number (We) are found to be the governing non- dimensional numbers. Porosity of the substrate is the geometry parameter studied in this thesis. Impact and penetration of the water droplet has been studied experimentally on structured parallel holes on a solid substrate to track penetration in the presence of capillarity. Liquid penetration into the holes was initially rapid, driven by the inertia of the impacting liquid and then much slower, caused by capillary forces that drew in the liquid. The rate of liquid movement was predicted by a simple model that included liquid pressure, surface tension and viscous effects. The area of liquid, solid contact inside the holes was significant, varying from 5% to 30% of the total droplet-substrate contact area as droplet height was raised from 1 cm to 5 cm. The enhanced contact area increased the surface energy of the droplet and reduced the energy available for droplet recoil. Physics of capillary penetration in our experimental studies extended our research to model droplet impact and penetration into structured permeable geometries using ANSYS-FLUENT 14.0. The significant objective of the numerical studies is characterization of the ratio of penetrated volume rather than droplet initial volume. Porosity of the substrate has been studied to evaluate the effect of this value in penetration regime. Investigating the effect of impact inertia achieved by changing Re number from 50 to 2000 and penetrated volume showed that increasing Re number increases liquid penetrated into the pore network. Spreading diameter and droplet height showed similar oscillatory behaviors, but larger degree in height rather than spreading diameter. In the end, dynamic of bubble formation at range of Re has been observed. Small bubbles start forming at Re = 200. By increasing Re to 500 entrapped bubbles into the pore network starts to disappear due to the larger degree of momentum of the impact which pushes the bubbles closer to the liquid/gas interface. For Re > 1000, formation of bubbles changes from spherical small form to large slug form. Advisors/Committee Members: Ashgriz, Nasser, Chandra, Sanjeev, Mechanical and Industrial Engineering.

Subjects/Keywords: Capillary; Droplet Impact; Inertia; Penetration; Porous Substrate; 0548

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APA (6^th Edition):

Hosseini, S. (2015). Droplet Impact and Penetration onto Structured Pore Network Geometries. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/70787

Chicago Manual of Style (16^th Edition):

Hosseini, Saman. “Droplet Impact and Penetration onto Structured Pore Network Geometries.” 2015. Doctoral Dissertation, University of Toronto. Accessed April 14, 2021. http://hdl.handle.net/1807/70787.

MLA Handbook (7^th Edition):

Hosseini, Saman. “Droplet Impact and Penetration onto Structured Pore Network Geometries.” 2015. Web. 14 Apr 2021.

Vancouver:

Hosseini S. Droplet Impact and Penetration onto Structured Pore Network Geometries. [Internet] [Doctoral dissertation]. University of Toronto; 2015. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/1807/70787.

Council of Science Editors:

Hosseini S. Droplet Impact and Penetration onto Structured Pore Network Geometries. [Doctoral Dissertation]. University of Toronto; 2015. Available from: http://hdl.handle.net/1807/70787

10. Fergusson, Christian. Hydrophobicity of Low Temperature Vibrating Surfaces.

Degree: MS, Mechanical and Nuclear Engineering, 2018, Virginia Commonwealth University

URL: https://doi.org/10.25772/9SWE-7N54 ; https://scholarscompass.vcu.edu/etd/5589

► This study proposes a method to enhance the anti-icing capabilities of superhydrophobic surfaces by utilizing vibration to further reduce contact time of an impacting… (more)

Subjects/Keywords: droplet impact; ice accretion; superhydrophobic; vibration; wetting; Materials Science and Engineering; Mechanical Engineering

10 more images…

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APA (6^th Edition):

Fergusson, C. (2018). Hydrophobicity of Low Temperature Vibrating Surfaces. (Thesis). Virginia Commonwealth University. Retrieved from https://doi.org/10.25772/9SWE-7N54 ; https://scholarscompass.vcu.edu/etd/5589

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Fergusson, Christian. “Hydrophobicity of Low Temperature Vibrating Surfaces.” 2018. Thesis, Virginia Commonwealth University. Accessed April 14, 2021. https://doi.org/10.25772/9SWE-7N54 ; https://scholarscompass.vcu.edu/etd/5589.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Fergusson, Christian. “Hydrophobicity of Low Temperature Vibrating Surfaces.” 2018. Web. 14 Apr 2021.

Vancouver:

Fergusson C. Hydrophobicity of Low Temperature Vibrating Surfaces. [Internet] [Thesis]. Virginia Commonwealth University; 2018. [cited 2021 Apr 14]. Available from: https://doi.org/10.25772/9SWE-7N54 ; https://scholarscompass.vcu.edu/etd/5589.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Fergusson C. Hydrophobicity of Low Temperature Vibrating Surfaces. [Thesis]. Virginia Commonwealth University; 2018. Available from: https://doi.org/10.25772/9SWE-7N54 ; https://scholarscompass.vcu.edu/etd/5589

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Chicago

11. Bathey Ramesh Bapu, Vijay Prithiv. Droplet Impact on Supercooled Surfaces.

Degree: 2017, University of Illinois – Chicago

URL: http://hdl.handle.net/10027/22211

► Dry ice, traditionally, has found tremendous application in food storage and blast cleaning. In recent years, there has been renewed interest in exploiting the sublimating… (more)

▼ Dry ice, traditionally, has found tremendous application in food storage and blast cleaning. In recent years, there has been renewed interest in exploiting the sublimating vapor of dry ice as a liquid repellent for contactless transport thereby reducing drag. This work investigates the impact of a hexadecane drop on a sublimating layer of dry ice at room temperature. The sublimating CO2 layer formed above the dry ice is compressed as the drop approaches the solid surface. Liquids which have lower specific heat capacity and latent heat comparatively can therefore freeze partially before bouncing at certain low Weber numbers. This unravels a hitherto unknown regime as current literature describes bouncing at low Weber numbers which is immediately followed by sticking and freezing at higher Weber for a given class of fluids. We thus examine the impact of a hexadecane drop below its capillary length on dry ice which exhibits this kind of behavior. The applicability of hexadecane as phase change material (PCM) also makes its use attractive in such a study. As the hexadecane drop spreads on this vapor cushion partial freezing ensures the movement of the contact line is arrested and we observe lower maximum drop spread (Dmax) values viz-à-viz impact on Super hydrophobic or Leidenfrost drops which display similar behavior. Furthermore, the drop is acted upon by hydrodynamic instabilities which lead to formation of fingers which give rise to an interesting petal shaped pattern. Our study aims characteristics these various morphological transitions in this regime where there is partial freezing accompanied by bouncing and sticking depending on the impact Weber number. This research thus aims to further our knowledge of drop impact on dry ice with the view of helping us better understand development of liquid repellant coatings and application where drag reductions is important. Advisors/Committee Members: Anand, Sushant (advisor), Megaridis, Constantine M (committee member), Paoli, Roberto (committee member), Anand, Sushant (chair).

Subjects/Keywords: Droplet Impact; Contactless Transport; Weber number; Capillary length; Superhydrophobic; Leidenfrost; partial freezing.

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APA (6^th Edition):

Bathey Ramesh Bapu, V. P. (2017). Droplet Impact on Supercooled Surfaces. (Thesis). University of Illinois – Chicago. Retrieved from http://hdl.handle.net/10027/22211

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Bathey Ramesh Bapu, Vijay Prithiv. “Droplet Impact on Supercooled Surfaces.” 2017. Thesis, University of Illinois – Chicago. Accessed April 14, 2021. http://hdl.handle.net/10027/22211.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Bathey Ramesh Bapu, Vijay Prithiv. “Droplet Impact on Supercooled Surfaces.” 2017. Web. 14 Apr 2021.

Vancouver:

Bathey Ramesh Bapu VP. Droplet Impact on Supercooled Surfaces. [Internet] [Thesis]. University of Illinois – Chicago; 2017. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10027/22211.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Bathey Ramesh Bapu VP. Droplet Impact on Supercooled Surfaces. [Thesis]. University of Illinois – Chicago; 2017. Available from: http://hdl.handle.net/10027/22211

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto

12. Esmaeelpanah, Javad. Modelling Air Bubble Entrapment and Transport in Sprayed Liquid Films.

Degree: PhD, 2017, University of Toronto

URL: http://hdl.handle.net/1807/90322

►

A parallel, three-dimensional multiphase fluid flow solver was employed to model the physics of droplet coalescence, bubble entrapment, bubble impact, and Marangoni convection in a… (more)

Subjects/Keywords: Bubble Entrapment; Bubble Impact; Droplet Coalescence; Marangoni Flow; Spray Paint Film; VOF Numerical Modelling; 0548

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APA (6^th Edition):

Esmaeelpanah, J. (2017). Modelling Air Bubble Entrapment and Transport in Sprayed Liquid Films. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/90322

Chicago Manual of Style (16^th Edition):

Esmaeelpanah, Javad. “Modelling Air Bubble Entrapment and Transport in Sprayed Liquid Films.” 2017. Doctoral Dissertation, University of Toronto. Accessed April 14, 2021. http://hdl.handle.net/1807/90322.

MLA Handbook (7^th Edition):

Esmaeelpanah, Javad. “Modelling Air Bubble Entrapment and Transport in Sprayed Liquid Films.” 2017. Web. 14 Apr 2021.

Vancouver:

Esmaeelpanah J. Modelling Air Bubble Entrapment and Transport in Sprayed Liquid Films. [Internet] [Doctoral dissertation]. University of Toronto; 2017. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/1807/90322.

Council of Science Editors:

Esmaeelpanah J. Modelling Air Bubble Entrapment and Transport in Sprayed Liquid Films. [Doctoral Dissertation]. University of Toronto; 2017. Available from: http://hdl.handle.net/1807/90322

Clemson University

13. He, Ping. Fluid Dynamics of Cell Printing.

Degree: PhD, Mechanical Engineering, 2011, Clemson University

URL: https://tigerprints.clemson.edu/all_dissertations/727

► Cell printing is an emerging technology that uses droplets to deliver cells to desired positions with resolution potentially comparable to the size of single… (more)

▼ Cell printing is an emerging technology that uses droplets to deliver cells to desired positions with resolution potentially comparable to the size of single cells. In particular, ink–jet based cell printing technique has been successfully used to build simple bio–constructs and has shown a promise in building complex bio–structures or even organs. Two important issues in ink–jet based cell printing are the moderate survival rate of delicate cells and the limited cell placement resolution. Resolving these issues is critical for the ink–jet based cell printing techniques to realize their full potential. In this work, we use numerical simulations to reconstruct the impact of a droplet loaded with a single cell onto a pool of viscous fluids to gain insights into the droplet and cell dynamics during cell printing. We developed a mathematical model for this process: the droplet, pool and air are modeled as Newtonian fluids, and their flow is modeled as a laminar flow governed by the Navier–Stokes equation. The cell is modeled as an axisymmetric solid object governed by the neo–Hookean law and also has a shear viscosity that is the same as that of its host droplet. To numerically solve the coupled fluid and cell motion, we used a hybrid method in which fluid flow is solved on a fixed Cartesian grid and the deformation of solid body is solved on a Lagrangian mesh. We also developed a new full Eulerian method, termed the solid level set (SLS) method, to simulate cell printing. The key idea is to track the deformation of the solid body using four level set functions on a fixed Cartesian grid instead of using a Lagrangian mesh. The SLS method is easy to implement and addresses several challenges in simulations of fluid–tructure interactions using hybrid Eulerian/Lagrangian meshes. Using codes developed based on the above methods, we systematically investigated the fluid and cell dynamics during the cell printing process. We studied how the droplet penetration depth, droplet lateral spreading, cell stress and cell surface area change are affected by printing conditions such as impact velocity, pool depth, and cell stiffness. Our simulations indicate that cell experiences significant stress (∼20kPa) and local surface area dilation (∼100%) during the impact process. The latter suggests that cell membrane is temporally ruptured during the printing process, and is consistent with the gene transfection observed during cell printing. We speculate that the survival of cell through the rather violent cell printing process may be related to the briefness of the impact process, which only lasts about 0.1 milliseconds. Based on our simulation results, several strategies have been proposed to reduce the stress and membrane dilation of cells during cell printing. Advisors/Committee Members: Qiao, Rui, Tong , Chenning, Miller , Richard S, Zumbrunnen , David A.

Subjects/Keywords: cell printing; computational fluid dynamics; droplet impact; fluid struture interactions; multi-phase flow; Mechanical Engineering

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APA (6^th Edition):

He, P. (2011). Fluid Dynamics of Cell Printing. (Doctoral Dissertation). Clemson University. Retrieved from https://tigerprints.clemson.edu/all_dissertations/727

Chicago Manual of Style (16^th Edition):

He, Ping. “Fluid Dynamics of Cell Printing.” 2011. Doctoral Dissertation, Clemson University. Accessed April 14, 2021. https://tigerprints.clemson.edu/all_dissertations/727.

MLA Handbook (7^th Edition):

He, Ping. “Fluid Dynamics of Cell Printing.” 2011. Web. 14 Apr 2021.

Vancouver:

He P. Fluid Dynamics of Cell Printing. [Internet] [Doctoral dissertation]. Clemson University; 2011. [cited 2021 Apr 14]. Available from: https://tigerprints.clemson.edu/all_dissertations/727.

Council of Science Editors:

He P. Fluid Dynamics of Cell Printing. [Doctoral Dissertation]. Clemson University; 2011. Available from: https://tigerprints.clemson.edu/all_dissertations/727

Université de Bordeaux I

14. Guillaument, Romain. Modélisation globale de l'alimentation d'une emprise lubrifiée par émulsion : simulation numérique directe et analyse physique des phénomènes : Rhythm of vigilance and cognition.

Degree: Docteur es, Mécanique, 2010, Université de Bordeaux I

URL: http://www.theses.fr/2010BOR14166

►

L'objet de cette thèse est de modéliser et simuler des écoulements diphasique/triphasique à phase non miscibles. L'impact de plusieurs gouttes d' émulsion (eau/huile) sur une… (more)

Subjects/Keywords: Emulsion; Impact de goutte; Simulation numérique; Angle de contact; Ligne triple; Emulsion; Droplet impact; Direct Numerical Simaulation; Contact angle; Plate Out

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APA (6^th Edition):

Guillaument, R. (2010). Modélisation globale de l'alimentation d'une emprise lubrifiée par émulsion : simulation numérique directe et analyse physique des phénomènes : Rhythm of vigilance and cognition. (Doctoral Dissertation). Université de Bordeaux I. Retrieved from http://www.theses.fr/2010BOR14166

Chicago Manual of Style (16^th Edition):

Guillaument, Romain. “Modélisation globale de l'alimentation d'une emprise lubrifiée par émulsion : simulation numérique directe et analyse physique des phénomènes : Rhythm of vigilance and cognition.” 2010. Doctoral Dissertation, Université de Bordeaux I. Accessed April 14, 2021. http://www.theses.fr/2010BOR14166.

MLA Handbook (7^th Edition):

Guillaument, Romain. “Modélisation globale de l'alimentation d'une emprise lubrifiée par émulsion : simulation numérique directe et analyse physique des phénomènes : Rhythm of vigilance and cognition.” 2010. Web. 14 Apr 2021.

Vancouver:

Guillaument R. Modélisation globale de l'alimentation d'une emprise lubrifiée par émulsion : simulation numérique directe et analyse physique des phénomènes : Rhythm of vigilance and cognition. [Internet] [Doctoral dissertation]. Université de Bordeaux I; 2010. [cited 2021 Apr 14]. Available from: http://www.theses.fr/2010BOR14166.

Council of Science Editors:

Guillaument R. Modélisation globale de l'alimentation d'une emprise lubrifiée par émulsion : simulation numérique directe et analyse physique des phénomènes : Rhythm of vigilance and cognition. [Doctoral Dissertation]. Université de Bordeaux I; 2010. Available from: http://www.theses.fr/2010BOR14166

15. Luiset, Benjamin. Etude des mécanismes d'endommagement d'érosion à la pluie et développement de revêtements anti-érosion pour applications aéronautiques : Study of rain erosion mechanisms and development of anti-erosion coatings for aviation applications.

Degree: Docteur es, Matériaux, 2013, Belfort-Montbéliard

URL: http://www.theses.fr/2013BELF0199

►

Nous étudions les mécanismes d’endommagement dus à l’érosion pluie sur des matériaux massifs et sur des matériaux revêtus. Pour cela, un banc d’essais spécifique a… (more)

▼

Nous étudions les mécanismes d’endommagement dus à l’érosion pluie sur des matériaux massifs et sur des matériaux revêtus. Pour cela, un banc d’essais spécifique a permis de mener des recherches en laboratoire. Le principe de l’essai repose sur l’émission de jets à haute vitesse et à haute fréquence.L’étude des matériaux massifs met en évidence un mécanisme de propagation de fissures par fatigue qui aboutit à des pertes de matière. Ces mêmes endommagements ont été observés sur des échantillons usés en service. Il a été confirmé que la dureté augmente la résistance à l’érosion pluie des matériaux métalliques.L’étude des revêtements s’est focalisée sur 2 technologies, à savoir la pulvérisation cathodique magnétron, qui est un procédé de déposition phase vapeur, et la projection thermique sous flamme supersonique. Les revêtements obtenus par projection thermique (dont l’épaisseur était supérieure à 200 μm), se sont révélés moins résistants à cause d’un manque d’adhérence ou de la présence de défauts au sein du matériau. Les revêtements obtenus par PVD (dont l’épaisseur était inférieure à 30 μm) ont permis d’obtenir des gains de résistance significatifs. Dans tous les cas, quel que soit la technologie utilisée, l’adhérence du revêtement s’est révélé être un paramètre critique en ce qui concerne la résistance de la surface à l’érosion pluie. Enfin, une simulation numérique en dynamique a permis d’étudier les champs de contraintes dans des feuillets métalliques, et ce, en faisant varier leurs épaisseurs, les matériaux qui les composent, et la vitesse d’impact. Les résultats de la simulation tendent à prouver que la propagation des ondes de contraintes dans le matériau peut entrainer des phénomènes de sur-contraintes dans les feuillets les plus fins à cause de la réflexion des ondes sur la face antérieure de la plaque.

The study deals with the rain erosion mechanisms of both bulk and coated materials. For that purpose, a specific test bench has been built, enabling laboratory research. The principle of the test is based on the emission of high-speed water jets at high frequency.Studying bulk materials confirmed the positive influence of hardness on rain erosion resistance for metallic materials. The mechanism found responsible for material losses is the propagation of fatigue cracks. These fatigue damages were also observed on in-service worn out samples.The analysis of coated materials focused on two covering technologies, namely physical vapor magnetron sputtering deposition (Magnetron PVD) and high velocity oxy-fuel coating spraying (HVOF). The coatings obtained by HVOF (> 200μm) weren’t resistant enough due to lack of adhesion and/or due to specific defects within the material. The coatings obtained by PVD (< 30μm) have yielded to significant improvements on the surface resistance. However, the adhesion of the coating appeared as a critical parameter for the rain erosion resistance.Finally, a numerical simulation has been designed to study dynamic stress fields in metal sheets. Moreover the model allowed the sheets…

Advisors/Committee Members: Billard, Alain (thesis director).

Subjects/Keywords: Erosion; Pluie; Revêtement; PVD Magnetron; Simulation; Impact; SPH; Rain Erosion; Droplet impact; PVD Magnetron; Simulation; SPH

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APA (6^th Edition):

Luiset, B. (2013). Etude des mécanismes d'endommagement d'érosion à la pluie et développement de revêtements anti-érosion pour applications aéronautiques : Study of rain erosion mechanisms and development of anti-erosion coatings for aviation applications. (Doctoral Dissertation). Belfort-Montbéliard. Retrieved from http://www.theses.fr/2013BELF0199

Chicago Manual of Style (16^th Edition):

Luiset, Benjamin. “Etude des mécanismes d'endommagement d'érosion à la pluie et développement de revêtements anti-érosion pour applications aéronautiques : Study of rain erosion mechanisms and development of anti-erosion coatings for aviation applications.” 2013. Doctoral Dissertation, Belfort-Montbéliard. Accessed April 14, 2021. http://www.theses.fr/2013BELF0199.

MLA Handbook (7^th Edition):

Luiset, Benjamin. “Etude des mécanismes d'endommagement d'érosion à la pluie et développement de revêtements anti-érosion pour applications aéronautiques : Study of rain erosion mechanisms and development of anti-erosion coatings for aviation applications.” 2013. Web. 14 Apr 2021.

Vancouver:

Luiset B. Etude des mécanismes d'endommagement d'érosion à la pluie et développement de revêtements anti-érosion pour applications aéronautiques : Study of rain erosion mechanisms and development of anti-erosion coatings for aviation applications. [Internet] [Doctoral dissertation]. Belfort-Montbéliard; 2013. [cited 2021 Apr 14]. Available from: http://www.theses.fr/2013BELF0199.

Council of Science Editors:

Luiset B. Etude des mécanismes d'endommagement d'érosion à la pluie et développement de revêtements anti-érosion pour applications aéronautiques : Study of rain erosion mechanisms and development of anti-erosion coatings for aviation applications. [Doctoral Dissertation]. Belfort-Montbéliard; 2013. Available from: http://www.theses.fr/2013BELF0199

Indian Institute of Science

16. Umashankar, Viverjita. Edge Effect of Semi-Infinite Rectangular Posts on Impacting Drops.

Degree: MSc Engg, Faculty of Engineering, 2018, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/3644

► The inhibiting effect of a sharp edge on liquid spreading is well observed during drop interaction with textured surfaces. On groove-textured solid surfaces comprising unidirectional… (more)

▼ The inhibiting effect of a sharp edge on liquid spreading is well observed during drop interaction with textured surfaces. On groove-textured solid surfaces comprising unidirectional parallel grooves, the edge effect of posts results in the squeezing of drop liquid in the direction perpendicular to the grooves and the stretching of drop liquid along the grooves leading to anisotropy in drop flow, popularly known as wetting anisotropy which has been employed in several engineering applications. A recent study observed that the energy loss incurring at the edges of posts via contact angle hysteresis is primarily responsible for the anisotropic spreading of impacting drops on groove-textured surfaces. The present study aims to elucidate the role of edges on the spreading and receding dynamics of water drops. The experiments of drop impact are carried out on semi-infinite rectangular post comprising a pair of parallel 90-deg edges separated by a distance (post width) comparable to the diameter of impacting drop. The equilibrium shape of drops on the semi-infinite rectangular post is analyzed using open source computational tool Surface Evolver to optimize the ratio of initial droplet diameter to post width. Quantitative measurements of drop impact dynamics on semi-infinite rectangular posts are deduced by analysing high speed videos of impact process captured under three different camera views during experiments. Based on the role of post edges on impacting drops, different regimes of the impacting drops are characterized in terms of drop Weber number and the ratio of diameter of impacting drop to post width. Characteristic features of impact dynamics in each of the regimes are identified and discussed. It is seen that edges play a pivotal role on all stages of impact dynamics regardless of Weber number. Impacts in the regime of completely pinned drops on narrow posts are further analyzed to reveal characteristics of post-spreading oscillations. Advisors/Committee Members: Sivakumar, D (advisor).

Subjects/Keywords: Surface Evolver; Liquid Drop Impact Phenomena; Anisotropic Spreading; Interfacial Oscillations; Droplet Impact; Liquid Drop Impact; Semi-infinite Target Surfaces; Liquid Drop Generator; Semi-infinite Rectangular Post; Impact Dynamics; Aerospace Engineering

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APA (6^th Edition):

Umashankar, V. (2018). Edge Effect of Semi-Infinite Rectangular Posts on Impacting Drops. (Masters Thesis). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3644

Chicago Manual of Style (16^th Edition):

Umashankar, Viverjita. “Edge Effect of Semi-Infinite Rectangular Posts on Impacting Drops.” 2018. Masters Thesis, Indian Institute of Science. Accessed April 14, 2021. http://etd.iisc.ac.in/handle/2005/3644.

MLA Handbook (7^th Edition):

Umashankar, Viverjita. “Edge Effect of Semi-Infinite Rectangular Posts on Impacting Drops.” 2018. Web. 14 Apr 2021.

Vancouver:

Umashankar V. Edge Effect of Semi-Infinite Rectangular Posts on Impacting Drops. [Internet] [Masters thesis]. Indian Institute of Science; 2018. [cited 2021 Apr 14]. Available from: http://etd.iisc.ac.in/handle/2005/3644.

Council of Science Editors:

Umashankar V. Edge Effect of Semi-Infinite Rectangular Posts on Impacting Drops. [Masters Thesis]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3644

University of Cincinnati

17. Ariyo, Adeyemi Idowu. Droplet Dynamics of Aqueous Polymeric Solutions on Solid Surfaces.

Degree: MS, Engineering : Mechanical Engineering, 2009, University of Cincinnati

URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1236212747

► The study of impact, spreading, and recoil of droplets of aqueous solutions of polymeric and surfactant additives on horizontal hydrophobic (Teflon) and hydrophilic (glass)… (more)

▼ The study of impact, spreading, and recoil of droplets of aqueous solutions of polymeric and surfactant additives on horizontal hydrophobic (Teflon) and hydrophilic (glass) surfaces is presented in this thesis. The non-Newtonian aqueous polymer solutions are prepared by mixing the water-soluble hydroxyethyl cellulose (HEC) with varying degree of polymerization (QPC 300, 250 HR, and 250 HHR) at different concentrations. The solution rheological and interfacial properties are characterized to understand the role of wettability, surface tension, and viscosity on the droplet surface interactions. For each polymer solution, the surface tension is measured by the maximum bubble pressure method and the static contact angle is measured using a contact angle/wettability analyzer. Intrinsic viscosities of the three polymers are determined from the viscosity measurements of their dilute solutions carried out using a capillary tube viscometer. A high speed digital camera is used to capture the droplet impact behavior at 4000 frames per second. The captured images of the droplet are analyzed using an image-processing software and the temporal variations of the spreading factor and the flattening factor of the droplet are determined. Results show that the higher viscosity coupled with lower surface tension of the polymer solutions leads to larger spread compared to a water droplet and inhibits strong recoil on a hydrophobic surface. Computational simulations of the fluid flow and heat transfer during spreading, recoil, rebound/break up of hot droplets of water and aqueous solutions of two surfactants (SDS and Triton-X 100) on a Teflon surface have been carried out at We ∼ 28. The continuity, momentum conservation, and the energy conservation equations are solved simultaneously using a finite volume method to determine the drop shape evolution and the drop-substrate heat transfer. The Volume-of-fluid or VOF method is used to track the liquid-gas interface deformations during spreading and recoil. By comparing the water and surfactant solution droplet impact dynamics at the same Weber number, it is evident that the surfactant solution drops produce larger initial spread and weaker recoil due to the reduction in surface tension at the liquid-air interface and the change in the wettability of the liquid-solid interface. The increased contact area leads to higher rate of heat transfer for a surfactant solution droplet compared to that for a water drop. The Triton X-100 with its lower mobility is less effective in increasing the drop-substrate heat transfer compared to SDS which has a higher mobility. Advisors/Committee Members: Jog, Milind (Committee Chair).

Subjects/Keywords: Mechanical Engineering; HEC; HHR; HEC QP; DROPLET; cpc; DROPLET IMPACT; QP

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APA (6^th Edition):

Ariyo, A. I. (2009). Droplet Dynamics of Aqueous Polymeric Solutions on Solid Surfaces. (Masters Thesis). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1236212747

Chicago Manual of Style (16^th Edition):

Ariyo, Adeyemi Idowu. “Droplet Dynamics of Aqueous Polymeric Solutions on Solid Surfaces.” 2009. Masters Thesis, University of Cincinnati. Accessed April 14, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1236212747.

MLA Handbook (7^th Edition):

Ariyo, Adeyemi Idowu. “Droplet Dynamics of Aqueous Polymeric Solutions on Solid Surfaces.” 2009. Web. 14 Apr 2021.

Vancouver:

Ariyo AI. Droplet Dynamics of Aqueous Polymeric Solutions on Solid Surfaces. [Internet] [Masters thesis]. University of Cincinnati; 2009. [cited 2021 Apr 14]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1236212747.

Council of Science Editors:

Ariyo AI. Droplet Dynamics of Aqueous Polymeric Solutions on Solid Surfaces. [Masters Thesis]. University of Cincinnati; 2009. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1236212747

ETH Zürich

18. Graeber, Gustav. Freezing Physics and Derived Surface Nano-Engineering for Spontaneous Deicing.

Degree: 2019, ETH Zürich

URL: http://hdl.handle.net/20.500.11850/333899

► Droplet freezing is important both in nature and in technology. In this thesis I investigate the fundamentals of freezing water droplets and derive design criteria… (more)

▼ Droplet freezing is important both in nature and in technology. In this thesis I investigate the fundamentals of freezing water droplets and derive design criteria for the development of intrinsically ice-repellent materials. Such icephobic surfaces could improve the performance and safety of a multitude of technical processes in energy and transport. This includes for example heat exchangers, where ice built-up reduces thermal transport, and airplane flight, where freezing of water on airfoils can result in catastrophic events. The thesis consists of three individual studies. In the first study we investigated how the environmental conditions during droplet freezing affect the freezing outcome. We found that evaporatively or convectively supercooled water droplets resting on solid substrate can self-remove during freezing. This phenomenon, which we termed self-dislodging, requires that the heat removal from the droplet’s free surface dominates the heat removal through the solid substrate. Consequently, the freezing front moves from the outside of the droplet towards the center and from the top to the bottom, resulting in a solid ice shell with an unsolidified core and an unfrozen droplet-substrate interface. We observed experimentally that the inward motion of the phase boundary near the substrate drives a gradual reduction in droplet-substrate contact. Concurrently, due to the volumetric expansion associated with freezing, semi-frozen water is displaced towards the droplet-substrate interface lifting the freezing droplet away from the substrate. The combined effects of dewetting and lifting result in droplet self-removal. We found that the more the substrate is hydrophobic the more robust self-dislodging occurs. In the second study we examined how multiple water droplets interact during freezing in a low-pressure environment. Understanding droplet interactions during freezing is important as droplets do not appear in isolation, but always in groups. We found that the freezing of a supercooled droplet results in self-heating and induces strong vaporization. The resulting, rapidly propagating vapor front causes immediate cascading freezing of neighboring supercooled droplets upon reaching them. We suggest that as the vapor approaches cold neighboring droplets, it can lead to local supersaturation and formation of airborne microscopic ice crystals, which act as freezing nucleation sites. The sequential triggering and propagation of this mechanism results in the rapid freezing of an entire droplet ensemble resulting in ice coverage of the solid surface. In the third study we introduced a controllable and upscalable method to fabricate superhydrophobic surfaces with a 3D-printed architecture for improved repellency of viscous liquids. We show a more than threefold contact time reduction of impacting viscous droplets up to a fluid viscosity of 3.7mPa s, which covers the viscosity of supercooled water down to -17 °C. Based on the combined consideration of the fluid flow within and the simultaneous droplet dynamics… Advisors/Committee Members: Poulikakos, Dimos, Quéré, David, Shih, Chih-Jen, Schutzius, Thomas M..

Subjects/Keywords: Freezing; Sublimation; Icephobicity; Nanotextures; Phase change; Recalescence freezing; Superhydrophobicity; Vaporization; 3D Printing; Thermodynamics; Droplet impact; info:eu-repo/classification/ddc/530; Physics

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APA (6^th Edition):

Graeber, G. (2019). Freezing Physics and Derived Surface Nano-Engineering for Spontaneous Deicing. (Doctoral Dissertation). ETH Zürich. Retrieved from http://hdl.handle.net/20.500.11850/333899

Chicago Manual of Style (16^th Edition):

Graeber, Gustav. “Freezing Physics and Derived Surface Nano-Engineering for Spontaneous Deicing.” 2019. Doctoral Dissertation, ETH Zürich. Accessed April 14, 2021. http://hdl.handle.net/20.500.11850/333899.

MLA Handbook (7^th Edition):

Graeber, Gustav. “Freezing Physics and Derived Surface Nano-Engineering for Spontaneous Deicing.” 2019. Web. 14 Apr 2021.

Vancouver:

Graeber G. Freezing Physics and Derived Surface Nano-Engineering for Spontaneous Deicing. [Internet] [Doctoral dissertation]. ETH Zürich; 2019. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/20.500.11850/333899.

Council of Science Editors:

Graeber G. Freezing Physics and Derived Surface Nano-Engineering for Spontaneous Deicing. [Doctoral Dissertation]. ETH Zürich; 2019. Available from: http://hdl.handle.net/20.500.11850/333899

19. Dhiman, Rajeev. Splashing and Breakup of Droplets Impacting on a Solid Surface.

Degree: 2009, University of Toronto

URL: http://hdl.handle.net/1807/17753

►

Two new mechanisms of droplet splashing and breakup during impact have been identified and analyzed. One is the internal rupture of spreading droplet film through… (more)

▼

Two new mechanisms of droplet splashing and breakup during impact have been identified and analyzed. One is the internal rupture of spreading droplet film through formation of holes, and the other is the splashing of droplet due to its freezing during spreading. The mechanism of film rupture was investigated by two different methods. In the first method, circular water films were produced by directing a 1 mm diameter water jet onto a flat, horizontal plate for 10 ms. In the second method, films were produced by making 0.6 mm water droplets impact a solid surface mounted on the rim of a rotating flywheel. Substrate wettability was varied over a wide range, including superhydrophobic. In both cases, the tendency to film rupture first increased and then decreased with contact angle. A thermodynamic stability analysis predicted this behavior by showing that films would be stable at very small or very large contact angle, but unstable in between. Film rupture was also found to be promoted by increasing surface roughness or decreasing film thickness. To study the effect of solidification, the impact of molten tin droplets (0.6 mm diameter) on solid surfaces was observed for a range of impact velocities (10 to 30 m/s), substrate temperatures (25 to 200°C) and substrate materials (stainless steel, aluminum and glass) using the rotating flywheel apparatus. Droplets splashed extensively on a cold surface but on a hot surface there was no splashing. Splashing could be completely suppressed by either increasing the substrate temperature or reducing its thermal diffusivity. An analytical model was developed to predict this splashing behavior. The above two theories of freezing-induced splashing and film rupture were combined to predict the morphology of splats typically observed in a thermal spray process. A dimensionless solidification parameter, which takes into account factors such as the droplet diameter and velocity, substrate temperature, splat and substrate thermophysical properties, and thermal contact resistance between the two, was developed. Predictions from the model were compared with a wide range of experimental data and found to agree well.

PhD

Advisors/Committee Members: Chandra, Sanjeev, Mechanical and Industrial Engineering.

Subjects/Keywords: Fluid Dynamics; Heat Transfer; Droplet Impact; Droplet Splashing; Thermal Spray Coating; Water Jet Impact; 0548

…generator �� .27 Figure 2.11: A schematic diagram of the droplet impact apparatus… …30 Figure 2.13: A typical sequence of droplet impact, Do =600 μm, Vo =10 m/s �� .32… …hole due to the impact of a droplet onto an otherwise stable water film on smooth wax surface… …Figure 4.7: Modeling droplet impact on a solid surface: (a) before impact, t=0, (… …thin film created by droplet impact will rupture as a function of receding liquid-solid…

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APA (6^th Edition):

Dhiman, R. (2009). Splashing and Breakup of Droplets Impacting on a Solid Surface. (Doctoral Dissertation). University of Toronto. Retrieved from http://hdl.handle.net/1807/17753

Chicago Manual of Style (16^th Edition):

Dhiman, Rajeev. “Splashing and Breakup of Droplets Impacting on a Solid Surface.” 2009. Doctoral Dissertation, University of Toronto. Accessed April 14, 2021. http://hdl.handle.net/1807/17753.

MLA Handbook (7^th Edition):

Dhiman, Rajeev. “Splashing and Breakup of Droplets Impacting on a Solid Surface.” 2009. Web. 14 Apr 2021.

Vancouver:

Dhiman R. Splashing and Breakup of Droplets Impacting on a Solid Surface. [Internet] [Doctoral dissertation]. University of Toronto; 2009. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/1807/17753.

Council of Science Editors:

Dhiman R. Splashing and Breakup of Droplets Impacting on a Solid Surface. [Doctoral Dissertation]. University of Toronto; 2009. Available from: http://hdl.handle.net/1807/17753

Indian Institute of Science

20. Gupta, Rahul. Influence of Chemical Coating on Droplet Impact Dynamics.

Degree: MSc Engg, Faculty of Engineering, 2018, Indian Institute of Science

URL: http://etd.iisc.ac.in/handle/2005/3262

► Dynamic behavior of impacting water drops on superhydrophobic solid surfaces provides important details on the stability/durability of such solid surfaces. Multi-scale surface roughness combined with… (more)

▼ Dynamic behavior of impacting water drops on superhydrophobic solid surfaces provides important details on the stability/durability of such solid surfaces. Multi-scale surface roughness combined with a layer of low energy chemical is an essential surface modification process followed to create superhydrophobic capabilities on solid surfaces. The present work aims at studying the effect of low energy surface coating on droplet impact dynamics by carrying out experiments of water drop impacts on rough solid surfaces with and without chemical modification. A group of six aluminium alloy (Al6061) surfaces (three pairs) are prepared. Roughness, characterized in terms mean surface roughness, Ra, is introduced to these metallic surfaces using sand-paper polishing, electric discharge machining (EDM), and chemical based surface etching process. Low energy surface layer is laid on the rough surfaces by coating NeverWet hydrophobic solution, octadecyl-trichloro-silane (OTS), and perfluorodecyltricholorosilane (FAS-17). The impact dynamics of water drops is analyzed by capturing high speed videos for a range of drop Weber number from 1 to 570 and the salient features of drop impact process on the coated rough surfaces are compared with the corresponding uncoated rough surfaces. A one-to-one comparison on the spreading, fingering, receding, and final equilibrium of impacting drops on the coated and uncoated target surfaces is presented. Upon coating NeverWet, the original surface features of the base aluminium surface are completely covered by the hydrophobic coating material resulting in a fresh top surface layer. The outcomes as well as the bounce-off characteristics of impacting water drops on the coated surface are comparable to those observed on lotus leaf. The surface morphology features of rough aluminium surfaces coated with OTS and FAS-17 are comparable to those of the corresponding uncoated surfaces. The quantitative measurements on primary spreading and maximum spread factor of impacting drops are largely unaffected by the presence of low energy chemical coating. The dominant effect of surface coating is seen on the receding of impacting drops and hence the final drop configuration. This behavior is more prominently seen on EDM fabricated rough surface (larger Ra) combined with OTS coating than that on etching based rough surface (smaller Ra) combined with FAS-17 coating highlighting the dependence of coating effect with roughness features. Advisors/Committee Members: Sivakumar, D (advisor).

Subjects/Keywords: Droplet Impact Dynamics; Low Energy Surface Coating; Surface Modification; Chemical Coating; Liquid Drop Impact; Solid Surfaces - Liquid Drop Impact; Aluminium Alloy Surfaces; Water Drop Impacts - Solid Surfaces; Superhydrophobic Surface; Water Droplets Impacting; Superhydrophobic Solid Surfaces; FAS-17; Impacting Water Drops; Drop Impact Dynamics; Aerospace Engineering

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APA (6^th Edition):

Gupta, R. (2018). Influence of Chemical Coating on Droplet Impact Dynamics. (Masters Thesis). Indian Institute of Science. Retrieved from http://etd.iisc.ac.in/handle/2005/3262

Chicago Manual of Style (16^th Edition):

Gupta, Rahul. “Influence of Chemical Coating on Droplet Impact Dynamics.” 2018. Masters Thesis, Indian Institute of Science. Accessed April 14, 2021. http://etd.iisc.ac.in/handle/2005/3262.

MLA Handbook (7^th Edition):

Gupta, Rahul. “Influence of Chemical Coating on Droplet Impact Dynamics.” 2018. Web. 14 Apr 2021.

Vancouver:

Gupta R. Influence of Chemical Coating on Droplet Impact Dynamics. [Internet] [Masters thesis]. Indian Institute of Science; 2018. [cited 2021 Apr 14]. Available from: http://etd.iisc.ac.in/handle/2005/3262.

Council of Science Editors:

Gupta R. Influence of Chemical Coating on Droplet Impact Dynamics. [Masters Thesis]. Indian Institute of Science; 2018. Available from: http://etd.iisc.ac.in/handle/2005/3262

21. Burtnett, Emily Nicole. Volume of fluid simulations for droplet impact on dry and wetted hydrophobic and superhydrophobic surfaces.

Degree: MS, Aerospace Engineering, 2012, Mississippi State University

URL: http://sun.library.msstate.edu/ETD-db/theses/available/etd-05162012-152431/ ;

► An aircraft may experience in-flight ice accretion and corresponding reductions in performance and control when the vehicle encounters clouds of super-cooled water droplets. The… (more)

Subjects/Keywords: superhydrophobic surfaces; volume of fluid method; droplet impact

…31 4.2.2 Droplet Impact on Smooth Surface… …Droplet Impact on a Surface with Structured MREs .....................39 4.2.3.1 MREs with Dry… …47 vi LIST OF TABLES TABLE Page 4.1 Relevant parameters for the droplet impact… …34 4.3 Relevant parameters for the droplet impact cases discussed in Sections 4.2.2 and… …23 4.3 Experimental results [42]: 10 μl droplet impact from 5 cm on smooth…

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APA (6^th Edition):

Burtnett, E. N. (2012). Volume of fluid simulations for droplet impact on dry and wetted hydrophobic and superhydrophobic surfaces. (Masters Thesis). Mississippi State University. Retrieved from http://sun.library.msstate.edu/ETD-db/theses/available/etd-05162012-152431/ ;

Chicago Manual of Style (16^th Edition):

Burtnett, Emily Nicole. “Volume of fluid simulations for droplet impact on dry and wetted hydrophobic and superhydrophobic surfaces.” 2012. Masters Thesis, Mississippi State University. Accessed April 14, 2021. http://sun.library.msstate.edu/ETD-db/theses/available/etd-05162012-152431/ ;.

MLA Handbook (7^th Edition):

Burtnett, Emily Nicole. “Volume of fluid simulations for droplet impact on dry and wetted hydrophobic and superhydrophobic surfaces.” 2012. Web. 14 Apr 2021.

Vancouver:

Burtnett EN. Volume of fluid simulations for droplet impact on dry and wetted hydrophobic and superhydrophobic surfaces. [Internet] [Masters thesis]. Mississippi State University; 2012. [cited 2021 Apr 14]. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-05162012-152431/ ;.

Council of Science Editors:

Burtnett EN. Volume of fluid simulations for droplet impact on dry and wetted hydrophobic and superhydrophobic surfaces. [Masters Thesis]. Mississippi State University; 2012. Available from: http://sun.library.msstate.edu/ETD-db/theses/available/etd-05162012-152431/ ;

University of Toronto

22. Farrokhpanah, Amirsaman. Applying Contact Angle to a Two-dimensional Smoothed Particle Hydrodynamics (SPH) model on a Graphics Processing Unit (GPU) Platform.

Degree: 2012, University of Toronto

URL: http://hdl.handle.net/1807/33416

►

A parallel GPU compatible Lagrangian mesh free particle solver for multiphase fluid flow based on SPH scheme is developed and used to capture the interface… (more)

Subjects/Keywords: GPU; SPH; Graphic Processing Unit; Smoothed Particle Hydrodynamics; Contact Angle; CFD; Droplet Spread and Impact; CUDA; continuum surface force (CSF); Multi-Phase; 0548

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APA (6^th Edition):

Farrokhpanah, A. (2012). Applying Contact Angle to a Two-dimensional Smoothed Particle Hydrodynamics (SPH) model on a Graphics Processing Unit (GPU) Platform. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/33416

Chicago Manual of Style (16^th Edition):

Farrokhpanah, Amirsaman. “Applying Contact Angle to a Two-dimensional Smoothed Particle Hydrodynamics (SPH) model on a Graphics Processing Unit (GPU) Platform.” 2012. Masters Thesis, University of Toronto. Accessed April 14, 2021. http://hdl.handle.net/1807/33416.

MLA Handbook (7^th Edition):

Farrokhpanah, Amirsaman. “Applying Contact Angle to a Two-dimensional Smoothed Particle Hydrodynamics (SPH) model on a Graphics Processing Unit (GPU) Platform.” 2012. Web. 14 Apr 2021.

Vancouver:

Farrokhpanah A. Applying Contact Angle to a Two-dimensional Smoothed Particle Hydrodynamics (SPH) model on a Graphics Processing Unit (GPU) Platform. [Internet] [Masters thesis]. University of Toronto; 2012. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/1807/33416.

Council of Science Editors:

Farrokhpanah A. Applying Contact Angle to a Two-dimensional Smoothed Particle Hydrodynamics (SPH) model on a Graphics Processing Unit (GPU) Platform. [Masters Thesis]. University of Toronto; 2012. Available from: http://hdl.handle.net/1807/33416

Northeastern University

23. Gao, Fei. Numerical simulation of the droplet-surface impact using interFoam.

Degree: MS, Department of Mechanical and Industrial Engineering, 2016, Northeastern University

URL: http://hdl.handle.net/2047/D20194500

► Droplet dynamics involves multi-scale forces from inertia body force, interior viscous shear stress to surface tension. The main purpose of this thesis is to simulate… (more)

▼ Droplet dynamics involves multi-scale forces from inertia body force, interior viscous shear stress to surface tension. The main purpose of this thesis is to simulate the normal impact of a liquid droplet on a hydrophobic surface by solving for the Navier[nil]Stokes equations. The numerical results obtained is used to evaluate the effects of variable parameters on the droplet deformation evolution. The numerical simulation also works as a complimentary part of the experimental exploration, by the group members in the Droplet-Surface Impact Project in Northeastern University.; The computational tool used is OpenFOAM, an open source CFD software package licensed and distributed by the OpenFOAM Foundation. The specific solver used is interFoam for this two phase problem. Water is modeled as a representative of the Newtonian fluids, while blood is modeled to represent non-Newtonian fluids. Multiple variables of the droplet-surface impact are investigated numerically: initial velocity, droplet diameter, transport properties, all of which contributes to a variation of the Weber number.; The numerical results obtained for water droplets are supported by experimental data and also semi-empirical correlations. The spreading behavior and generation of ripples are in good agreement with that observed in the experimental tests. As the capillary effects become more dominant in the recoiling period, a discrepancy starts to show by a pre-maturely generated secondary droplet in simulation. Possible reasons are speculated for this discrepancy between numerical and experimental results.; In the numerical comparison between water and blood droplets, a resemblance of droplet behavior in the initial spreading process is observed, while the recoiling process shows differences: blood droplets rebound in an "irregular" way compared to water droplets. The difference in deformation behaviors caused by varied transport properties leads to a way of distinguishing liquids by simple droplet-surface impact tests.

Subjects/Keywords: droplet impact; hydrophobic surface; simulation; Drops; Fluid dynamics; Simulation methods; Computational fluid dynamics; Water; Fluid dynamics; Simulation methods; Blood; Fluid dynamics; Simulation methods; Hydrophobic surfaces; Shear (Mechanics)

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gao, F. (2016). Numerical simulation of the droplet-surface impact using interFoam. (Masters Thesis). Northeastern University. Retrieved from http://hdl.handle.net/2047/D20194500

Chicago Manual of Style (16^th Edition):

Gao, Fei. “Numerical simulation of the droplet-surface impact using interFoam.” 2016. Masters Thesis, Northeastern University. Accessed April 14, 2021. http://hdl.handle.net/2047/D20194500.

MLA Handbook (7^th Edition):

Gao, Fei. “Numerical simulation of the droplet-surface impact using interFoam.” 2016. Web. 14 Apr 2021.

Vancouver:

Gao F. Numerical simulation of the droplet-surface impact using interFoam. [Internet] [Masters thesis]. Northeastern University; 2016. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/2047/D20194500.

Council of Science Editors:

Gao F. Numerical simulation of the droplet-surface impact using interFoam. [Masters Thesis]. Northeastern University; 2016. Available from: http://hdl.handle.net/2047/D20194500

Northeastern University

24. Majidi, Leily. Influence of viscosity gradient on bubble formation at a submerged orifice.

Degree: MS, Department of Mechanical and Industrial Engineering, 2015, Northeastern University

URL: http://hdl.handle.net/2047/d20009280

► The objective of the present work was to experimentally investigate bubble formation in different viscosities of Silicone oil. The purpose of these experiments was to… (more)

Subjects/Keywords: Bubble formation; Liquid droplet impact; porous structure; Splats in thermal spray; Thermal spray; Volcanology; Mechanical Engineering; Viscosity; Silicones; Viscosity; Bubbles; Focused ion beams; Obsidian

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APA (6^th Edition):

Majidi, L. (2015). Influence of viscosity gradient on bubble formation at a submerged orifice. (Masters Thesis). Northeastern University. Retrieved from http://hdl.handle.net/2047/d20009280

Chicago Manual of Style (16^th Edition):

Majidi, Leily. “Influence of viscosity gradient on bubble formation at a submerged orifice.” 2015. Masters Thesis, Northeastern University. Accessed April 14, 2021. http://hdl.handle.net/2047/d20009280.

MLA Handbook (7^th Edition):

Majidi, Leily. “Influence of viscosity gradient on bubble formation at a submerged orifice.” 2015. Web. 14 Apr 2021.

Vancouver:

Majidi L. Influence of viscosity gradient on bubble formation at a submerged orifice. [Internet] [Masters thesis]. Northeastern University; 2015. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/2047/d20009280.

Council of Science Editors:

Majidi L. Influence of viscosity gradient on bubble formation at a submerged orifice. [Masters Thesis]. Northeastern University; 2015. Available from: http://hdl.handle.net/2047/d20009280

25. Vasileiou, Thomas. Studies of Droplet Behavior in Emerging Technologies: Elasticity Effects on Surface Superhydrophobicity and Contactless Acoustophoretic DNA Transfection.

Degree: 2017, ETH Zürich

URL: http://hdl.handle.net/20.500.11850/197617

► The present thesis focuses on the study of droplet behavior within the framework of two classes of emerging technologies, related to the development of elastic… (more)

▼ The present thesis focuses on the study of droplet behavior within the framework of two classes of emerging technologies, related to the development of elastic superhydrophobic or icephobic materials with extreme performance and to the realization of contactless acoustophoretic DNA transfection, respectively. To this end, first we examine the collaborative effects of substrate flexibility, topography, and composition on enhancing surface superhydrophobicity and icephobicity, as defined by droplet impalement resistance, contact time and restitution coefficient, and use such knowledge in redesigning superhydrophobic and icephobic materials to repel supercooled droplets. Subsequently, we investigate the use of acoustophoretic actuation for contactless processing of liquid droplets containing living cells and design a containerless biological reactor appropriate to carry out DNA transfection experiments in a contactless manner. Flexible materials are ubiquitous in everyday life and technology, from textiles to insect wings and plant leaves; however, the effect of flexibility on the wetting and droplet impact dynamics under broad environmental conditions is not well understood. The concept investigated here is how the flexibility of the substrate—defined by its stiffness, damping and areal density—can be made to work collaboratively with surface chemistry and texturing in order to enhance superhydrophobicity. Droplet impact experiments reveal that the rational tuning of flexibility is able to achieve improved water repellency as characterized by the impalement and breakup resistance, contact time reduction and restitution coefficient increase. Designing flexible substrates with low-areal density and stiffness imparts immediate responsiveness to the substrate for impacting droplets, mitigating the collision and lowering the impalement probability without the need for an active mechanism. The aforementioned effects on drop impact dynamics are rationalized through appropriate modeling and exemplified by man-made and natural materials. The previous knowledge of manipulating droplets with flexible substrates is then applied in the design of icephobic materials. Surface icing is omnipresent in equipment installed outdoors and can cause deterioration of performance, e.g. in wind turbine blades and power lines, and serious safety hazard, e.g. in aviation. The flexible superhydrophobic materials were designed to absorb the energy of incoming droplets and to boost droplet mobility by releasing the absorbed energy at a later time. The design was optimized using highly viscous droplets for simplicity (mimicking supercooled water viscosity), like glycerol and honey, which do not rebound from rigid superhydrophobic surfaces. Then it was validated with water droplets at supercooled temperatures. The partial solidification of the supercooled droplets in the presence of nucleation promoting particles on the surface did not impede the solidifying droplets from rebounding, demonstrating a passive mechanism for shedding ice-water… Advisors/Committee Members: Poulikakos, Dimos, Müller, Christoph, Schutzius, Thomas M..

Subjects/Keywords: Droplet impact; Superhydrophobic surfaces; Icephobic surfaces; Flexibility; Elasticity; Wetting transition; Acoustic levitation; Acoustophoresis; transfection efficiency; neuronal differentiation; info:eu-repo/classification/ddc/620; Engineering & allied operations

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APA (6^th Edition):

Vasileiou, T. (2017). Studies of Droplet Behavior in Emerging Technologies: Elasticity Effects on Surface Superhydrophobicity and Contactless Acoustophoretic DNA Transfection. (Doctoral Dissertation). ETH Zürich. Retrieved from http://hdl.handle.net/20.500.11850/197617

Chicago Manual of Style (16^th Edition):

Vasileiou, Thomas. “Studies of Droplet Behavior in Emerging Technologies: Elasticity Effects on Surface Superhydrophobicity and Contactless Acoustophoretic DNA Transfection.” 2017. Doctoral Dissertation, ETH Zürich. Accessed April 14, 2021. http://hdl.handle.net/20.500.11850/197617.

MLA Handbook (7^th Edition):

Vasileiou, Thomas. “Studies of Droplet Behavior in Emerging Technologies: Elasticity Effects on Surface Superhydrophobicity and Contactless Acoustophoretic DNA Transfection.” 2017. Web. 14 Apr 2021.

Vancouver:

Vasileiou T. Studies of Droplet Behavior in Emerging Technologies: Elasticity Effects on Surface Superhydrophobicity and Contactless Acoustophoretic DNA Transfection. [Internet] [Doctoral dissertation]. ETH Zürich; 2017. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/20.500.11850/197617.

Council of Science Editors:

Vasileiou T. Studies of Droplet Behavior in Emerging Technologies: Elasticity Effects on Surface Superhydrophobicity and Contactless Acoustophoretic DNA Transfection. [Doctoral Dissertation]. ETH Zürich; 2017. Available from: http://hdl.handle.net/20.500.11850/197617

26. KUPPA ASHOKE RAMAN. A NUMERICAL STUDY ON THE DYNAMICS OF DROPLET-WALL INTERACTIONS.

Degree: 2016, National University of Singapore

URL: http://scholarbank.nus.edu.sg/handle/10635/132121

Subjects/Keywords: Droplet impact; Lattice Boltzmann method; Contact angle Hysteresis; Rebound control; Wettability gradient; Electrowetting

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APA (6^th Edition):

RAMAN, K. A. (2016). A NUMERICAL STUDY ON THE DYNAMICS OF DROPLET-WALL INTERACTIONS. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/132121

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

RAMAN, KUPPA ASHOKE. “A NUMERICAL STUDY ON THE DYNAMICS OF DROPLET-WALL INTERACTIONS.” 2016. Thesis, National University of Singapore. Accessed April 14, 2021. http://scholarbank.nus.edu.sg/handle/10635/132121.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

RAMAN, KUPPA ASHOKE. “A NUMERICAL STUDY ON THE DYNAMICS OF DROPLET-WALL INTERACTIONS.” 2016. Web. 14 Apr 2021.

Vancouver:

RAMAN KA. A NUMERICAL STUDY ON THE DYNAMICS OF DROPLET-WALL INTERACTIONS. [Internet] [Thesis]. National University of Singapore; 2016. [cited 2021 Apr 14]. Available from: http://scholarbank.nus.edu.sg/handle/10635/132121.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

RAMAN KA. A NUMERICAL STUDY ON THE DYNAMICS OF DROPLET-WALL INTERACTIONS. [Thesis]. National University of Singapore; 2016. Available from: http://scholarbank.nus.edu.sg/handle/10635/132121

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign

27. Weisensee, Patricia Barbara. Droplet interactions with micro- and nanostructured surfaces for advanced heat transfer applications.

Degree: PhD, Mechanical Engineering, 2016, University of Illinois – Urbana-Champaign

URL: http://hdl.handle.net/2142/95580

► Droplets. Droplets are omnipresent: from rain droplets, over ink-jet printers, to advanced heat exchangers and thermal management systems. But in order to use droplets to… (more)

▼ Droplets. Droplets are omnipresent: from rain droplets, over ink-jet printers, to advanced heat exchangers and thermal management systems. But in order to use droplets to our advantage, we need to study and understand how they interact with surfaces. Throughout this dissertation, I use optical photography and high speed imaging to characterize droplet-solid interactions. When liquid water comes into contact with a hydrophobic surface, such as Teflon, it forms individual droplets. The contact angle that the droplet develops with the surface is well understood in an air environment. However, when placed in a pure water vapor environment, I show that contact angles can decrease by up to 10% as compared to those in air. At the same time, on micro- and nanostructured surfaces, the vapor environment has little effect on the static contact angles. Based on Young’s equation and Fowke’s concept of the additivity of surface tensions, I propose that the decrease in contact angle on flat hydrophobic Teflon arises from molecular water vapor adsorption to the Teflon surface. In many engineering applications, the use of metals, as opposed to silicon and polymers, is desired to render surfaces water and oil repellent. I introduce micro electrical discharge machining (mEDM) as a viable tool to fabricate scalable micro-mushrooms (~ 100 µm) on steel blocks (~ 1 cm). I show that narrow micro-mushrooms with wide spacing give the highest contact angles (θA/θR = 170°/151°) and droplet mobility with water, while microstructures with flat tops, strong re-entrant curvature and smaller gap widths are necessary to support non-wetting droplets with liquids with a low surface tension, such as oils and alcohols (θA/θR = 148°/74° with isopropanol). After studying static and quasi-static droplet-surface interactions, I continued characterizing droplet dynamics during impact on micro- and nanostructured surfaces. Contact times during impact on rigid surfaces are constant over a wide range of impact speeds, and are thus difficult to control. I show that contact times of water droplets impacting elastic superhydrophobic surfaces can be reduced by up to 50% when compared to impact on rigid surfaces due to a springboard effect, during which droplet lifts off the surface prior to fully recoiling. Upon impact, the droplet excites the substrate to oscillate, while during liquid retraction, the substrate imparts vertical momentum back to the droplet, causing early droplet lift-off with reduced contact time. Through detailed experimental and theoretical analysis, I show that this novel springboarding phenomenon is achieved for a specific range of Weber numbers (We > 40) and droplet Froude numbers during spreading (Fr > 1). For droplets impacting vibrating superhydrophobic surfaces (60-320 Hz), I show that vibration frequency and phase at impact strongly influence the contact time of the bouncing droplets. I introduce the concept of a frequency-dependent critical impact phase at which contact times transition from a minimum (tc ≈ 0.5 tc,th) to a maximum… Advisors/Committee Members: King, William P (advisor), King, William P (Committee Chair), Miljkovic, Nenad (committee member), Jacobi, Anthony (committee member), Cahill, David (committee member).

Subjects/Keywords: Wettability; Surface Engineering; Phase Change Heat Transfer; Droplet Impact; Dropwise Condensation; Lubricant-Infused Surface (LIS); Slippery liquid-infused porous surface (SLIPS); Splashing; Contact Time

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APA (6^th Edition):

Weisensee, P. B. (2016). Droplet interactions with micro- and nanostructured surfaces for advanced heat transfer applications. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/95580

Chicago Manual of Style (16^th Edition):

Weisensee, Patricia Barbara. “Droplet interactions with micro- and nanostructured surfaces for advanced heat transfer applications.” 2016. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed April 14, 2021. http://hdl.handle.net/2142/95580.

MLA Handbook (7^th Edition):

Weisensee, Patricia Barbara. “Droplet interactions with micro- and nanostructured surfaces for advanced heat transfer applications.” 2016. Web. 14 Apr 2021.

Vancouver:

Weisensee PB. Droplet interactions with micro- and nanostructured surfaces for advanced heat transfer applications. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2016. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/2142/95580.

Council of Science Editors:

Weisensee PB. Droplet interactions with micro- and nanostructured surfaces for advanced heat transfer applications. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2016. Available from: http://hdl.handle.net/2142/95580

28. Gao, Fan. The Impact Dynamics of Weakly Charged Droplets.

Degree: PhD, Mechanical Engineering, 2019, Virginia Tech

URL: http://hdl.handle.net/10919/92888

► Electric charges are often found in naturally or artificially formed droplets, such as raindrops, waterfall, and inkjet printer. Neutral droplets impact on flat surfaces will… (more)

Subjects/Keywords: Droplet and bubble; Lubrication pressure; Maxwell stress; Impact

…List of Figures Figure 1-1. The whole process of droplet impact on a solid smooth surface… …44 Figure 3-1. Side-view of neutral droplet impact process… …47 Figure 3-2. Bottom-view of neutral droplet impact process… …52 Figure 3-6. No bubble is trapped under the droplet when impact velocity is too slow… …54 Figure 3-8. Side-view of metal droplet impact…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Gao, F. (2019). The Impact Dynamics of Weakly Charged Droplets. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/92888

Chicago Manual of Style (16^th Edition):

Gao, Fan. “The Impact Dynamics of Weakly Charged Droplets.” 2019. Doctoral Dissertation, Virginia Tech. Accessed April 14, 2021. http://hdl.handle.net/10919/92888.

MLA Handbook (7^th Edition):

Gao, Fan. “The Impact Dynamics of Weakly Charged Droplets.” 2019. Web. 14 Apr 2021.

Vancouver:

Gao F. The Impact Dynamics of Weakly Charged Droplets. [Internet] [Doctoral dissertation]. Virginia Tech; 2019. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/10919/92888.

Council of Science Editors:

Gao F. The Impact Dynamics of Weakly Charged Droplets. [Doctoral Dissertation]. Virginia Tech; 2019. Available from: http://hdl.handle.net/10919/92888

29. Huang, Xiao. Dynamics Of Newtonian And Non-newtonian Liquid Droplet Impact On Super-hydrophobic Solid Surfaces.

Degree: PhD, Department of Mechanical and Industrial Engineering, 2019, Northeastern University

URL: http://hdl.handle.net/2047/D20324044

► The dynamics of liquid droplet impact on a super-hydrophobic surface was investigated experimentally and theoretically. The reactions of Newtonian droplet impact on a super-hydrophobic surface… (more)

▼ The dynamics of liquid droplet impact on a super-hydrophobic surface was investigated experimentally and theoretically. The reactions of Newtonian droplet impact on a super-hydrophobic surface at low impact velocities (0-1.7m/s) and low Weber numbers (0 - 200) were revisited. The work further extended the investigation to non-Newtonian drops such as shear-thickening cornstarch and shear-thinning blood. The spreading dynamics of pure water, milk, 15wt.% cornstarch colloidal solution and healthy rabbit blood drops were studied by experiments and compared to the previous reported theoretical models. While the Roisman's model agreed well with the Newtonian drop spreading, a large deviation was observed in the experiments with non-Newtonian drops, especially of blood. Further theoretical analysis revealed the effects of the blood shear thinning properties on the droplet spreading. With the knowledge of the experimental spreading dynamics, we developed a rim instability theory to explain the fingering behavior by modifying the classical Rayleigh-Plateau instability. Our model accurately predicted the fingering behavior of water, milk and cornstarch drops, but over-estimated the blood droplet fingering at high impact Weber numbers (greater than 105). Based on the preliminary theoretical analysis, the shear thinning of blood, caused by the red blood cells deformability, was believed as the reason for the deviations in fingering. Following the discussions of spreading and fingering, the stability of the liquid jet was investigated experimentally where the jet breakup modes as well as mode transition were introduced. The jet evolution maps were created for water, milk and cornstarch droplets based on the experiments. Similar to the spreading and fingering, the extraordinary stability of the blood droplet was observed in jetting and was coined as 'shear-thinning inertia-driven stability'. The investigations on jetting filled the vacuum in research on droplet impact. Furthermore, our work initiated the research on the dynamics of blood droplet impact. The 'shear-thinning inertia-driven stability' creates a connection between the blood dynamics and the red blood cells deformability which suggests an important potential application: early diagnosis of blood diseases.

Subjects/Keywords: Blood Drop Impact; Droplet Impact; Fingering; Non-Newtonian Liquid Drop; Shear-thinning Drop Impact; Super-Hydrophobic; Mechanical engineering

…195 C Experiments of Droplet Impact 197 C.1 Preparation of fluids… …61 4.8 Water droplet impact on a super-hydrophobic surface at different Weber numbers in… …droplet impact on a super-hydrophobic surface at different Weber numbers in horizontal view… …65 xi 4.10 Whole milk droplet impact on a super-hydrophobic surface at different Weber… …blood droplet impact on a super-hydrophobic surface at different Weber numbers in horizontal…

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Huang, X. (2019). Dynamics Of Newtonian And Non-newtonian Liquid Droplet Impact On Super-hydrophobic Solid Surfaces. (Doctoral Dissertation). Northeastern University. Retrieved from http://hdl.handle.net/2047/D20324044

Chicago Manual of Style (16^th Edition):

Huang, Xiao. “Dynamics Of Newtonian And Non-newtonian Liquid Droplet Impact On Super-hydrophobic Solid Surfaces.” 2019. Doctoral Dissertation, Northeastern University. Accessed April 14, 2021. http://hdl.handle.net/2047/D20324044.

MLA Handbook (7^th Edition):

Huang, Xiao. “Dynamics Of Newtonian And Non-newtonian Liquid Droplet Impact On Super-hydrophobic Solid Surfaces.” 2019. Web. 14 Apr 2021.

Vancouver:

Huang X. Dynamics Of Newtonian And Non-newtonian Liquid Droplet Impact On Super-hydrophobic Solid Surfaces. [Internet] [Doctoral dissertation]. Northeastern University; 2019. [cited 2021 Apr 14]. Available from: http://hdl.handle.net/2047/D20324044.

Council of Science Editors:

Huang X. Dynamics Of Newtonian And Non-newtonian Liquid Droplet Impact On Super-hydrophobic Solid Surfaces. [Doctoral Dissertation]. Northeastern University; 2019. Available from: http://hdl.handle.net/2047/D20324044

Université de Lorraine

30. Dunand, Pierre. Étude de l'impact de goutte sur une paroi chaude en régime de Leidenfrost : Study of the droplet impact onto a heated wall in the Leidenfrost regime.

Degree: Docteur es, Mécanique et énergétique, 2012, Université de Lorraine

URL: http://www.theses.fr/2012LORR0166

►

Les impacts de gouttes sur paroi chaude sont présents dans de multiples domaines, tels que l'injection de diesel sous forme de spray dans des moteurs… (more)

▼

Les impacts de gouttes sur paroi chaude sont présents dans de multiples domaines, tels que l'injection de diesel sous forme de spray dans des moteurs à combustions internes, ou le traitement thermiques de l'acier dans le domaine de la sidérurgie. L'étude de l'interactions goutte/paroi permet de mieux comprendre les phénomènes thermiques mis en jeu, et ainsi d'aboutir à des économies d'énergies et d'eau. De nombreux travaux portent sur cette thématique, mais ils présentent des résultats divergents et uniquement basés sur l'étude de la paroi chaude. Cette thèse a pour but d'apporter des mesures expérimentales sur les caractéristiques inconnues en étudiant les gouttes. Pour cela, un dispositif expérimental a été mis au point afin de mener à bien l'ensemble des mesures souhaitées. Les diverses techniques de mesures de température utilisées sont présentées, et une attention plus particulière a été portée sur le développement de la technique de fluorescence induite par plan laser qui permet d'accéder au champ de température des gouttes durant leur impact. Cette méthode, combinée à une technique de thermographie par caméra infrarouge couplée à un modèle de conduction inverse, permet d'extraire les paramètres concernant l'aspect thermique, et de déterminer de nouvelles caractéristiques inédites, telles que l'échauffement des gouttes, l'évaporation relative de celles-ci ou encore l'efficacité de refroidissement. Les parts respectives jouées par la chaleur sensible et l'évaporation des gouttes sont tirées de cette dernière. Enfin, l'aspect dynamique est également abordé aboutissant au développement d'une technique d'ombroscopie rapide. Cette dernière a permis, grâce à la combinaison de mesures de diamètres précises et d'une fréquence d'acquisition élevée, d'extraire les paramètres dynamiques de l'impact tels que la vitesse et taille des gouttes, ou d'autres paramètres relatif au type d'impact rencontrés à l'aide d'un algorithme de suivi de particules développé durant la thèse

The droplet impact onto a heated wall interaction can be found in mutiples fields, such as internal combustion engines or the steel industry, specially in the thermal treatment of the steel where high energy dissipation rate is required. The study of this interaction should grant a better understanding of this phenomena, and thus, allow the enhancement of these processes and reduce the energy and water consumption. Several studies have already been carried out on this subjet but a great majority of them, whose results present great divergence, only consider the heated wall, neglecting the outgoing of the droplet. This thesis put the emphasis on the liquid phase where currently no data exist to our knowledge, with the help of multiples experimental technics that have been developped. A general experimental setup has been made in order to make all the wanted measurements. The measurement techniques used in this study are first presented, to begin with the planar laser induced fluorescence, which allow us to know the droplet temperature during the impact.…

Advisors/Committee Members: Lemoine, Fabrice (thesis director), Castanet, Guillaume (thesis director).

Subjects/Keywords: Transferts thermiques; Leidenfrost; Impact de goutte; Fluorescence induite par laser; Thermographie infrarouge; Ombroscopie; Suivi de particule; Heat transfer; Leidenfrost; Droplet impingement; Laser-induced fluorescence; Infrared thermography; Shadow imaging; Particle tracking; 621.402 1

Record Details Similar Records Cite « Share

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Dunand, P. (2012). Étude de l'impact de goutte sur une paroi chaude en régime de Leidenfrost : Study of the droplet impact onto a heated wall in the Leidenfrost regime. (Doctoral Dissertation). Université de Lorraine. Retrieved from http://www.theses.fr/2012LORR0166

Chicago Manual of Style (16^th Edition):

Dunand, Pierre. “Étude de l'impact de goutte sur une paroi chaude en régime de Leidenfrost : Study of the droplet impact onto a heated wall in the Leidenfrost regime.” 2012. Doctoral Dissertation, Université de Lorraine. Accessed April 14, 2021. http://www.theses.fr/2012LORR0166.

MLA Handbook (7^th Edition):

Dunand, Pierre. “Étude de l'impact de goutte sur une paroi chaude en régime de Leidenfrost : Study of the droplet impact onto a heated wall in the Leidenfrost regime.” 2012. Web. 14 Apr 2021.

Vancouver:

Dunand P. Étude de l'impact de goutte sur une paroi chaude en régime de Leidenfrost : Study of the droplet impact onto a heated wall in the Leidenfrost regime. [Internet] [Doctoral dissertation]. Université de Lorraine; 2012. [cited 2021 Apr 14]. Available from: http://www.theses.fr/2012LORR0166.

Council of Science Editors:

Dunand P. Étude de l'impact de goutte sur une paroi chaude en régime de Leidenfrost : Study of the droplet impact onto a heated wall in the Leidenfrost regime. [Doctoral Dissertation]. Université de Lorraine; 2012. Available from: http://www.theses.fr/2012LORR0166

Open Access Theses and Dissertations