subject:(fluid mechanics)

Rice University

1. Zhang, Yutong. Computational Flow Analysis of a Cyclone Vacuum Cleaner.

Degree: MS, Mechanical Engineering, 2019, Rice University

URL: http://hdl.handle.net/1911/105403

► Computational flow analysis of a cyclone vacuum cleaner can provide valuable fluid mechanics information for efficient design and operation. The vacuum cleaner is made of… (more)

Subjects/Keywords: Fluid Mechanics; Computational Fluid Mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Zhang, Y. (2019). Computational Flow Analysis of a Cyclone Vacuum Cleaner. (Masters Thesis). Rice University. Retrieved from http://hdl.handle.net/1911/105403

Chicago Manual of Style (16^th Edition):

Zhang, Yutong. “Computational Flow Analysis of a Cyclone Vacuum Cleaner.” 2019. Masters Thesis, Rice University. Accessed March 05, 2021. http://hdl.handle.net/1911/105403.

MLA Handbook (7^th Edition):

Zhang, Yutong. “Computational Flow Analysis of a Cyclone Vacuum Cleaner.” 2019. Web. 05 Mar 2021.

Vancouver:

Zhang Y. Computational Flow Analysis of a Cyclone Vacuum Cleaner. [Internet] [Masters thesis]. Rice University; 2019. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1911/105403.

Council of Science Editors:

Zhang Y. Computational Flow Analysis of a Cyclone Vacuum Cleaner. [Masters Thesis]. Rice University; 2019. Available from: http://hdl.handle.net/1911/105403

2. Sane, Aakash. Surface Tension of Flowing Soap Films.

Degree: Fluid, Thermal, and Chemical Processes, 2017, Brown University

URL: https://repository.library.brown.edu/studio/item/bdr:733500/

► We investigate the relation of surface tension of the flowing soap films with respect to flow parameters such as the flow speed, width of the… (more)

Subjects/Keywords: Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Sane, A. (2017). Surface Tension of Flowing Soap Films. (Thesis). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:733500/

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):

Sane, Aakash. “Surface Tension of Flowing Soap Films.” 2017. Thesis, Brown University. Accessed March 05, 2021. https://repository.library.brown.edu/studio/item/bdr:733500/.

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

MLA Handbook (7^th Edition):

Sane, Aakash. “Surface Tension of Flowing Soap Films.” 2017. Web. 05 Mar 2021.

Vancouver:

Sane A. Surface Tension of Flowing Soap Films. [Internet] [Thesis]. Brown University; 2017. [cited 2021 Mar 05]. Available from: https://repository.library.brown.edu/studio/item/bdr:733500/.

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

Council of Science Editors:

Sane A. Surface Tension of Flowing Soap Films. [Thesis]. Brown University; 2017. Available from: https://repository.library.brown.edu/studio/item/bdr:733500/

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

University of California – San Diego

3. Felez, Ricardo. Residual streaming flows in buoyancy driven cross-shore exchange.

Degree: Engineering Sciences (Mechanical Engineering), 2016, University of California – San Diego

URL: http://www.escholarship.org/uc/item/46q9r1n8

► Cross-shore exchange processes are of critical importance for coastal ecosystems such as coral reefs with implications for transport of nutrients, larvae and heat. We present… (more)

Subjects/Keywords: Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Felez, R. (2016). Residual streaming flows in buoyancy driven cross-shore exchange. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/46q9r1n8

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):

Felez, Ricardo. “Residual streaming flows in buoyancy driven cross-shore exchange.” 2016. Thesis, University of California – San Diego. Accessed March 05, 2021. http://www.escholarship.org/uc/item/46q9r1n8.

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

MLA Handbook (7^th Edition):

Felez, Ricardo. “Residual streaming flows in buoyancy driven cross-shore exchange.” 2016. Web. 05 Mar 2021.

Vancouver:

Felez R. Residual streaming flows in buoyancy driven cross-shore exchange. [Internet] [Thesis]. University of California – San Diego; 2016. [cited 2021 Mar 05]. Available from: http://www.escholarship.org/uc/item/46q9r1n8.

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

Council of Science Editors:

Felez R. Residual streaming flows in buoyancy driven cross-shore exchange. [Thesis]. University of California – San Diego; 2016. Available from: http://www.escholarship.org/uc/item/46q9r1n8

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

University of California – Berkeley

4. Konus, Mehmet Fatih. Vortex Wake of Coaxial Rotors in Hover.

Degree: Mechanical Engineering, 2017, University of California – Berkeley

URL: http://www.escholarship.org/uc/item/08f8254p

► An extensive sets of experiments are carried out regarding the stability characteristics of helical vortex filaments o a coaxial rotor model. A coaxial rotor model… (more)

▼ An extensive sets of experiments are carried out regarding the stability characteristics of helical vortex filaments o a coaxial rotor model. A coaxial rotor model consisting of two 26-cm (10.25-in) diameter counter-rotating rotors with a root cut-out of 3.2 cm (25%) is employed in these experiments in one- and two-bladed configurations. Axial rotor separation varied from 25% of the rotor radius to one rotor radius. Rotor speed ranged from 2 to 8 rps at each rotor spacing. Dye flow visualization, particle flow visualization and particle image velocimetry are employed in order to take measurements of the flow field. For one-bladed tests, helical tip vortex filament trailed from the lower rotor blade is observed to develop strong deformations soon after its formation at the rotor spacing of a quarter rotor radius as opposed to that of upper rotor. This deformation is less pronounced at the rotor spacing of 0:8R. Upper and lower rotor vortices are seen to develop long-wave vortex pairing instabilities where they orbit around each other as they travel downstream, particularly at smaller rotor spacing, which is also confirmed in PIV results. Successive turns of the upper rotor helices appear to be stable as opposed to unstable nature of lower rotor helix in both rotor separations. At H=R = 0:8, the upper rotor wake contraction is markedly higher than that of the lower rotor. Vortex filaments develop short-wave instabilities at 2 & 4 rps just immediately after their inceptions in both rotor separations. In two-bladed configurations, in all cases tip vortices trailed from the lower rotor experience extreme distortions, resulting in the loss of their orderly helical shapes, which is a clear manifestation of the effect of the upper rotor on the lower one. At smaller rotor spacings up to 50% radius, lower rotor filaments develop long-wave vortex pairing instabilities in similar ways to what is found in single rotor wakes although they differ to the extent lower vortex filaments undergo deformations. At this rotor spacing range, upper rotor filaments does not have sufficient space between the rotors to develop mutual interactions before they reach the plane of the lower rotor and interact with lower rotor blades, i.e. interrotor blade-vortex interactions (BVIs). As the rotor spacing is further increased up to a rotor radius, upper rotor filaments are seen to develop long-wave pairing instabilities similar to what is observed in the wakes of single rotor runs. As in the one-bladed configurations, upper rotor filaments possess a more stable nature whereas those from lower rotor becomes unstable within first rotor revolution beneath the lower rotor. At rotor spacing of 50% radius, hairpin vortices are observed to form beneath the lower rotor during the long-wave instability mode developed by the lower rotor filaments where streamwise elongation of the vortex filament from a particular blade of the lower rotor in each rotor revolution is observed. At other rotor spacings, similar deformation of the vortex filaments in the…

Subjects/Keywords: Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Konus, M. F. (2017). Vortex Wake of Coaxial Rotors in Hover. (Thesis). University of California – Berkeley. Retrieved from http://www.escholarship.org/uc/item/08f8254p

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):

Konus, Mehmet Fatih. “Vortex Wake of Coaxial Rotors in Hover.” 2017. Thesis, University of California – Berkeley. Accessed March 05, 2021. http://www.escholarship.org/uc/item/08f8254p.

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

MLA Handbook (7^th Edition):

Konus, Mehmet Fatih. “Vortex Wake of Coaxial Rotors in Hover.” 2017. Web. 05 Mar 2021.

Vancouver:

Konus MF. Vortex Wake of Coaxial Rotors in Hover. [Internet] [Thesis]. University of California – Berkeley; 2017. [cited 2021 Mar 05]. Available from: http://www.escholarship.org/uc/item/08f8254p.

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

Council of Science Editors:

Konus MF. Vortex Wake of Coaxial Rotors in Hover. [Thesis]. University of California – Berkeley; 2017. Available from: http://www.escholarship.org/uc/item/08f8254p

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

Arizona State University

5. Ding, Liuyang. Fundamentals and Applications of N-pulse Particle Image Velocimetry-accelerometry: Towards Advanced Measurements of Complex Flows and Turbulence.

Degree: Mechanical Engineering, 2018, Arizona State University

URL: http://repository.asu.edu/items/48461

► Over the past three decades, particle image velocimetry (PIV) has been continuously growing to become an informative and robust experimental tool for fluid mechanics research.… (more)

▼ Over the past three decades, particle image velocimetry (PIV) has been continuously growing to become an informative and robust experimental tool for fluid mechanics research. Compared to the early stage of PIV development, the dynamic range of PIV has been improved by about an order of magnitude (Adrian, 2005; Westerweel et al., 2013). Further improvement requires a breakthrough innovation, which constitutes the main motivation of this dissertation. N-pulse particle image velocimetry-accelerometry (N-pulse PIVA, where N>=3) is a promising technique to this regard. It employs bursts of N pulses to gain advantages in both spatial and temporal resolution. The performance improvement by N-pulse PIVA is studied using particle tracking (i.e. N-pulse PTVA), and it is shown that an enhancement of at least another order of magnitude is achievable. Furthermore, the capability of N-pulse PIVA to measure unsteady acceleration and force is demonstrated in the context of an oscillating cylinder interacting with surrounding fluid. The cylinder motion, the fluid velocity and acceleration, and the fluid force exerted on the cylinder are successfully measured. On the other hand, a key issue of multi-camera registration for the implementation of N-pulse PIVA is addressed with an accuracy of 0.001 pixel. Subsequently, two applications of N-pulse PTVA to complex flows and turbulence are presented. A novel 8-pulse PTVA analysis was developed and validated to accurately resolve particle unsteady drag in post-shock flows. It is found that the particle drag is substantially elevated from the standard drag due to flow unsteadiness, and a new drag correlation incorporating particle Reynolds number and unsteadiness is desired upon removal of the uncertainty arising from non-uniform particle size. Next, the estimation of turbulence statistics utilizes the ensemble average of 4-pulse PTV data within a small domain of an optimally determined size. The estimation of mean velocity, mean velocity gradient and isotropic dissipation rate are presented and discussed by means of synthetic turbulence, as well as a tomographic measurement of turbulent boundary layer. The results indicate the superior capability of the N-pulse PTV based method to extract high-spatial-resolution high-accuracy turbulence statistics.

Subjects/Keywords: Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Ding, L. (2018). Fundamentals and Applications of N-pulse Particle Image Velocimetry-accelerometry: Towards Advanced Measurements of Complex Flows and Turbulence. (Doctoral Dissertation). Arizona State University. Retrieved from http://repository.asu.edu/items/48461

Chicago Manual of Style (16^th Edition):

Ding, Liuyang. “Fundamentals and Applications of N-pulse Particle Image Velocimetry-accelerometry: Towards Advanced Measurements of Complex Flows and Turbulence.” 2018. Doctoral Dissertation, Arizona State University. Accessed March 05, 2021. http://repository.asu.edu/items/48461.

MLA Handbook (7^th Edition):

Ding, Liuyang. “Fundamentals and Applications of N-pulse Particle Image Velocimetry-accelerometry: Towards Advanced Measurements of Complex Flows and Turbulence.” 2018. Web. 05 Mar 2021.

Vancouver:

Ding L. Fundamentals and Applications of N-pulse Particle Image Velocimetry-accelerometry: Towards Advanced Measurements of Complex Flows and Turbulence. [Internet] [Doctoral dissertation]. Arizona State University; 2018. [cited 2021 Mar 05]. Available from: http://repository.asu.edu/items/48461.

Council of Science Editors:

Ding L. Fundamentals and Applications of N-pulse Particle Image Velocimetry-accelerometry: Towards Advanced Measurements of Complex Flows and Turbulence. [Doctoral Dissertation]. Arizona State University; 2018. Available from: http://repository.asu.edu/items/48461

University of Melbourne

6. Collis, Jesse F. Unsteady motion of small particles in fluid: from autonomous propulsion to the interrogation of liquid-solid interfaces.

Degree: 2018, University of Melbourne

URL: http://hdl.handle.net/11343/216669

► Fluid flows at micro- and nanometre length scales are governed by physical processes that are quite different to their macroscale counterparts. When these flows interact… (more)

▼ Fluid flows at micro- and nanometre length scales are governed by physical processes that are quite different to their macroscale counterparts. When these flows interact with suspended solid particles, a rich array of phenomena can occur. This thesis examines four such processes in which unsteadiness arises; due to both steady and oscillatory flow processes. Axisymmetric particles immersed in shear flows undergo periodic rotational motions known as Jeffery orbits. While extensive measurements have been reported on these orbits, the axial rotation of the particles has been difficult to study. A new methodology and commensurate theory is developed to enable the observation of these axial rotations. Experimental measurements are performed to validate the proposed theory. Hydrodynamic trapping of small particles in microvortices has been observed experimentally. These microvortices are generated by cylindrical nanorods rotating about their minor axis, driven by an external magnetic field. The physical mechanism underlying this phenomenon is currently unknown. Here, a hydrodynamic model based on a rotating disc is proposed in an attempt to explain these observations. An asymptotic expansion on the Navier-Stokes equations is used to include the effects of small fluid inertia in the system. Finite particle size and inertia effects are then included through use of a particle momentum equation. This model reveals a possible trapping mechanism due to the interaction of the particle with the surrounding non-uniform flow. Nanorods suspended in acoustically actuated fluid chambers have been observed to undergo autonomous propulsion. These particles, which contain for-and-aft asymmetries due to both shape and density, create local streaming flows enabling their propulsion. A general theory is developed to describe their motion which is applied to a dumbbell model for analytic solution. This provides a significant advance on existing theory, by allowing axisymmetric particles of arbitrary shape and density distribution to be modelled. New physics is uncovered, demonstrating that these particles can change their propulsion direction at intermediate frequencies; this phenomena is yet to be observed experimentally. The Navier-slip condition is used widely to model non-continuum flows. Its applicability to the gas-solid interface is established from theory, while the liquid-solid interface does not enjoy such rigour. Here, a new experimental method for probing this boundary condition at the liquid-solid interface is developed, based on multi-mode measurements in Suspended Microchannel Resonators (SMRs). Analytic, numeric and statistic tools are formulated to enable interpretation of these measurements. A constant slip length (of 2.7 ± 0.6 nm) is measured for gold nanoparticles of varying radii, providing the first direct experimental evidence for Navier slip at the liquid-solid interface, i.e. the slip-length is a material parameter, independent of geometry. This array of measurements and theory advance our…

Subjects/Keywords: fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Collis, J. F. (2018). Unsteady motion of small particles in fluid: from autonomous propulsion to the interrogation of liquid-solid interfaces. (Doctoral Dissertation). University of Melbourne. Retrieved from http://hdl.handle.net/11343/216669

Chicago Manual of Style (16^th Edition):

Collis, Jesse F. “Unsteady motion of small particles in fluid: from autonomous propulsion to the interrogation of liquid-solid interfaces.” 2018. Doctoral Dissertation, University of Melbourne. Accessed March 05, 2021. http://hdl.handle.net/11343/216669.

MLA Handbook (7^th Edition):

Collis, Jesse F. “Unsteady motion of small particles in fluid: from autonomous propulsion to the interrogation of liquid-solid interfaces.” 2018. Web. 05 Mar 2021.

Vancouver:

Collis JF. Unsteady motion of small particles in fluid: from autonomous propulsion to the interrogation of liquid-solid interfaces. [Internet] [Doctoral dissertation]. University of Melbourne; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/11343/216669.

Council of Science Editors:

Collis JF. Unsteady motion of small particles in fluid: from autonomous propulsion to the interrogation of liquid-solid interfaces. [Doctoral Dissertation]. University of Melbourne; 2018. Available from: http://hdl.handle.net/11343/216669

University of Cape Town

7. Gakingo, Godfrey Kabungo. The impact of thermophysical properties on nanofluid-based solar collector performance.

Degree: Image, Centre for Research in Computational and Applied Mechanics (CERECAM), 2016, University of Cape Town

URL: http://hdl.handle.net/11427/20913

► Nanofluids are a novel class of heat transfer fluids in which nanoparticles are dispersed in traditional heat transfer fluids. They offer enhanced thermophysical, rheological and… (more)

Subjects/Keywords: Fluid Mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Gakingo, G. K. (2016). The impact of thermophysical properties on nanofluid-based solar collector performance. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/20913

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):

Gakingo, Godfrey Kabungo. “The impact of thermophysical properties on nanofluid-based solar collector performance.” 2016. Thesis, University of Cape Town. Accessed March 05, 2021. http://hdl.handle.net/11427/20913.

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

MLA Handbook (7^th Edition):

Gakingo, Godfrey Kabungo. “The impact of thermophysical properties on nanofluid-based solar collector performance.” 2016. Web. 05 Mar 2021.

Vancouver:

Gakingo GK. The impact of thermophysical properties on nanofluid-based solar collector performance. [Internet] [Thesis]. University of Cape Town; 2016. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/11427/20913.

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

Council of Science Editors:

Gakingo GK. The impact of thermophysical properties on nanofluid-based solar collector performance. [Thesis]. University of Cape Town; 2016. Available from: http://hdl.handle.net/11427/20913

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

The George Washington University

8. Nasiri, Farshad. The Structure of Boundary Layer Along a Vertical, Surface-Piercing Flat Plate.

Degree: 2018, The George Washington University

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=10842581

► The present work reports on Direct Numerical Simulations of a temporally developing, zero pressure gradient, turbulent boundary along a surface piercing flat plate and… (more)

Subjects/Keywords: Fluid mechanics; Engineering

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Nasiri, F. (2018). The Structure of Boundary Layer Along a Vertical, Surface-Piercing Flat Plate. (Thesis). The George Washington University. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=10842581

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):

Nasiri, Farshad. “The Structure of Boundary Layer Along a Vertical, Surface-Piercing Flat Plate.” 2018. Thesis, The George Washington University. Accessed March 05, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=10842581.

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

MLA Handbook (7^th Edition):

Nasiri, Farshad. “The Structure of Boundary Layer Along a Vertical, Surface-Piercing Flat Plate.” 2018. Web. 05 Mar 2021.

Vancouver:

Nasiri F. The Structure of Boundary Layer Along a Vertical, Surface-Piercing Flat Plate. [Internet] [Thesis]. The George Washington University; 2018. [cited 2021 Mar 05]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10842581.

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

Council of Science Editors:

Nasiri F. The Structure of Boundary Layer Along a Vertical, Surface-Piercing Flat Plate. [Thesis]. The George Washington University; 2018. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10842581

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

University of Cambridge

9. Ayton, Lorna Jane. Asymptotic approximations for the sound generated by aerofoils in unsteady subsonic flows.

Degree: PhD, 2014, University of Cambridge

URL: https://www.repository.cam.ac.uk/handle/1810/246549https://www.repository.cam.ac.uk/bitstream/1810/246549/4/ThesisC3.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/246549/5/ThesisC3.pdf.jpg

► This thesis considers the sound generated by unsteady perturbations interacting with solid aerofoils in background steady flows, in an attempt to further develop analytic models… (more)

Subjects/Keywords: Aeroacoustics; Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Ayton, L. J. (2014). Asymptotic approximations for the sound generated by aerofoils in unsteady subsonic flows. (Doctoral Dissertation). University of Cambridge. Retrieved from https://www.repository.cam.ac.uk/handle/1810/246549https://www.repository.cam.ac.uk/bitstream/1810/246549/4/ThesisC3.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/246549/5/ThesisC3.pdf.jpg

Chicago Manual of Style (16^th Edition):

Ayton, Lorna Jane. “Asymptotic approximations for the sound generated by aerofoils in unsteady subsonic flows.” 2014. Doctoral Dissertation, University of Cambridge. Accessed March 05, 2021. https://www.repository.cam.ac.uk/handle/1810/246549https://www.repository.cam.ac.uk/bitstream/1810/246549/4/ThesisC3.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/246549/5/ThesisC3.pdf.jpg.

MLA Handbook (7^th Edition):

Ayton, Lorna Jane. “Asymptotic approximations for the sound generated by aerofoils in unsteady subsonic flows.” 2014. Web. 05 Mar 2021.

Vancouver:

Ayton LJ. Asymptotic approximations for the sound generated by aerofoils in unsteady subsonic flows. [Internet] [Doctoral dissertation]. University of Cambridge; 2014. [cited 2021 Mar 05]. Available from: https://www.repository.cam.ac.uk/handle/1810/246549https://www.repository.cam.ac.uk/bitstream/1810/246549/4/ThesisC3.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/246549/5/ThesisC3.pdf.jpg.

Council of Science Editors:

Ayton LJ. Asymptotic approximations for the sound generated by aerofoils in unsteady subsonic flows. [Doctoral Dissertation]. University of Cambridge; 2014. Available from: https://www.repository.cam.ac.uk/handle/1810/246549https://www.repository.cam.ac.uk/bitstream/1810/246549/4/ThesisC3.pdf.txt ; https://www.repository.cam.ac.uk/bitstream/1810/246549/5/ThesisC3.pdf.jpg

Coventry University

10. Zhang, L. Influence of the geometry on the two- and three-dimensional dynamics of the flow in a 180 degree sharp bend.

Degree: PhD, 2013, Coventry University

URL: http://curve.coventry.ac.uk/open/items/45ec5161-85e3-470d-908c-70013dabab4a/1 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.699449

► In this thesis, I numerically simulate the flow past a 180 degree sharp bend. The main objective of this research is to characterize the influences… (more)

▼ In this thesis, I numerically simulate the flow past a 180 degree sharp bend. The main objective of this research is to characterize the influences of the bend geometry on the flow regimes when Reynolds number (Re) is varied. Reynolds number and the opening ratio () (the definition of is defined in section 4.1.1) of the bend are the control parameters which are varied to perform the parametric study. For the first part of our research, I focus on the flow past a twodimensional 180 sharp bend. An extensive parametric study on the transitions of the flow regimes by varying the values of Re and is performed. The values of Re and are in the ranges of (0...2500] and [0.1...10], respectively. As Reynolds number is increased, I find a laminar flow, then a flow with a first recirculation attached the inside boundary, then a flow with a second recirculation attached to the top boundary. The onset of the unsteadiness occurs through instability of the main stream and the vortex shedding starts from the inside boundary. For < 0.3, the flow is characterised by the dynamics of the jet flow near the very narrow turning part. For 0.3, the flow exhibits strong similarities with the flow behind an obstacle placed in a channel. For the second part of our work, I focus on the flow past a threedimensional 180 sharp bend. Simulations with periodic conditions are performed for selected Re and in order to determine the validity of the 2D assumptions. The results show that two-dimensional dynamics can predict the features of three-dimensional flow in steady flow regimes, even for unsteady flow regimes to some extent. Simulations on the more realistic situations of a three-dimensional bend with walls are carried out as well. The results show that flow is symmetric to the center of the bend at low Re along spanwise direction. As Re increases, the influences of Dean flow on the mainstream flow are obvious. Near-wall quasi-symmetric shedding is presented in unsteady flow regimes as well. The unsteadiness is first originated from the shear layer between the first recirculation and the Dean flow region.

Subjects/Keywords: 620.1; Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Zhang, L. (2013). Influence of the geometry on the two- and three-dimensional dynamics of the flow in a 180 degree sharp bend. (Doctoral Dissertation). Coventry University. Retrieved from http://curve.coventry.ac.uk/open/items/45ec5161-85e3-470d-908c-70013dabab4a/1 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.699449

Chicago Manual of Style (16^th Edition):

Zhang, L. “Influence of the geometry on the two- and three-dimensional dynamics of the flow in a 180 degree sharp bend.” 2013. Doctoral Dissertation, Coventry University. Accessed March 05, 2021. http://curve.coventry.ac.uk/open/items/45ec5161-85e3-470d-908c-70013dabab4a/1 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.699449.

MLA Handbook (7^th Edition):

Zhang, L. “Influence of the geometry on the two- and three-dimensional dynamics of the flow in a 180 degree sharp bend.” 2013. Web. 05 Mar 2021.

Vancouver:

Zhang L. Influence of the geometry on the two- and three-dimensional dynamics of the flow in a 180 degree sharp bend. [Internet] [Doctoral dissertation]. Coventry University; 2013. [cited 2021 Mar 05]. Available from: http://curve.coventry.ac.uk/open/items/45ec5161-85e3-470d-908c-70013dabab4a/1 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.699449.

Council of Science Editors:

Zhang L. Influence of the geometry on the two- and three-dimensional dynamics of the flow in a 180 degree sharp bend. [Doctoral Dissertation]. Coventry University; 2013. Available from: http://curve.coventry.ac.uk/open/items/45ec5161-85e3-470d-908c-70013dabab4a/1 ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.699449

11. Istvan, Mark. Effects of free-stream turbulence intensity on laminar separation bubbles.

Degree: 2017, University of Waterloo

URL: http://hdl.handle.net/10012/12285

► The effects of free-stream turbulence intensity on the flow over a NACA 0018 airfoil are studied experimentally in a wind tunnel facility. A parametric study… (more)

▼ The effects of free-stream turbulence intensity on the flow over a NACA 0018 airfoil are studied experimentally in a wind tunnel facility. A parametric study is performed over a range of chord Reynolds numbers from 100 000 to 200 000, angles of attack from 0 to 20, and free-stream turbulence intensities from 0.09% to 2.03% in order to unravel the effects of each parameter on suction side laminar separation bubble topology and the resulting changes in airfoil lift. In order to investigate the effects of free-stream turbulence intensity on the streamwise and spanwise flow development within a separation bubble, flow field measurements are made using planar Particle Image Velocimetry for an angle of attack of 4, chord Reynolds numbers of 80 000 and 125 000, and free-stream turbulence intensities between 0.10% and 1.94%. The results show that increasing the level of free-stream turbulence intensity leads to a reduction in the length of the separation bubble formed over the suction side of the airfoil. The reduction in bubble length is a result of a downstream shift in mean separation as well as an upstream shift in mean transition and, consequently, mean reattachment. At low angles of attack, the reduction in separation bubble length leads to a slight reduction in airfoil lift, while at pre-stall angles of attack the reduction in separation bubble length alleviates the loss of suction at the location of the suction peak, thereby increasing lift, and can delay stall. While the effects of turbulence intensity and chord Reynolds number on the mean flow are shown to be similar, their effects on transition are shown to be notably different. The upstream shift in mean transition with increasing turbulence intensity is shown to be the result of disturbances reaching higher amplitudes earlier upstream as the level of turbulence intensity is increased, despite increased bubble stability. This result suggests that the increased initial perturbation amplitude at elevated turbulence intensity levels is solely responsible for the upstream shift in mean transition. In contrast, the upstream shift in mean transition with increasing Reynolds number is a result of decreased bubble stability. Wavenumber-frequency spectra of velocity fluctuations in the separated shear layer show that disturbances become more broadband in both time and space with increasing turbulence intensity. In addition, the results show that as the level of free-stream turbulence intensity is increased, the spanwise coherence of shear layer rollers decreases at the location of roll-up, leading to earlier vortex breakdown. At elevated levels of turbulence intensity, streamwise streaks of low speed fluid are observed, and originate in the boundary layer upstream of the separation bubble. These streaks form as a result of the onset of bypass transition, leading to significant changes in bubble dynamics, particularly at the highest level of turbulence intensity investigated. The results suggest that the transition mechanism in the separation bubble at the highest…

Subjects/Keywords: fluid mechanics; transition

4 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Istvan, M. (2017). Effects of free-stream turbulence intensity on laminar separation bubbles. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/12285

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):

Istvan, Mark. “Effects of free-stream turbulence intensity on laminar separation bubbles.” 2017. Thesis, University of Waterloo. Accessed March 05, 2021. http://hdl.handle.net/10012/12285.

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

MLA Handbook (7^th Edition):

Istvan, Mark. “Effects of free-stream turbulence intensity on laminar separation bubbles.” 2017. Web. 05 Mar 2021.

Vancouver:

Istvan M. Effects of free-stream turbulence intensity on laminar separation bubbles. [Internet] [Thesis]. University of Waterloo; 2017. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10012/12285.

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

Council of Science Editors:

Istvan M. Effects of free-stream turbulence intensity on laminar separation bubbles. [Thesis]. University of Waterloo; 2017. Available from: http://hdl.handle.net/10012/12285

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

12. Svensson, Henrik. Numerisk beräkning av aerodynamisk instabilitet hos en volleyboll i flykt .

Degree: Chalmers University of Technology / Department of Mechanics and Maritime Sciences, 2018, Chalmers University of Technology

URL: http://hdl.handle.net/20.500.12380/255423

► Float är ett aerodynamiskt fenomen inom volleyboll där en serve med minimal initial rotation kan leda till en oförutsägbar bana för volleybollen. I den här… (more)

Subjects/Keywords: Strömningsmekanik; Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Svensson, H. (2018). Numerisk beräkning av aerodynamisk instabilitet hos en volleyboll i flykt . (Thesis). Chalmers University of Technology. Retrieved from http://hdl.handle.net/20.500.12380/255423

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):

Svensson, Henrik. “Numerisk beräkning av aerodynamisk instabilitet hos en volleyboll i flykt .” 2018. Thesis, Chalmers University of Technology. Accessed March 05, 2021. http://hdl.handle.net/20.500.12380/255423.

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

MLA Handbook (7^th Edition):

Svensson, Henrik. “Numerisk beräkning av aerodynamisk instabilitet hos en volleyboll i flykt .” 2018. Web. 05 Mar 2021.

Vancouver:

Svensson H. Numerisk beräkning av aerodynamisk instabilitet hos en volleyboll i flykt . [Internet] [Thesis]. Chalmers University of Technology; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/20.500.12380/255423.

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

Council of Science Editors:

Svensson H. Numerisk beräkning av aerodynamisk instabilitet hos en volleyboll i flykt . [Thesis]. Chalmers University of Technology; 2018. Available from: http://hdl.handle.net/20.500.12380/255423

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

University of Aberdeen

13. Starnoni, Michele. Modelling single and two-phase flow on micro-CT images of rock samples.

Degree: PhD, 2017, University of Aberdeen

URL: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152383020005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.720587

► In this Thesis, numerical simulations of single and two-phase pore-scale flow on three dimensional images obtained from micro-CT scanning of different reservoir rocks are presented.… (more)

▼ In this Thesis, numerical simulations of single and two-phase pore-scale flow on three dimensional images obtained from micro-CT scanning of different reservoir rocks are presented. For single-phase flow, the petrophysical properties of rocks, namely Representative Elementary Volume (REV), mean pore and grain size, and absolute permeability, are calculated using an integrated approach comprising image processing, statistical correlation and numerical simulations. Two rock formations, one carbonate and one sandstone, are used throughout this Thesis. It is shown that REV and mean pore and grain size are effectively estimated using the two-point spatial correlation function. A comparison of different absolute permeability estimates is also presented, showing a good agreement between the numerical value and the experimentally determined one for the carbonate sample, but a huge discrepancy for the sandstone. For two-phase flow, the Volume-of-fluid method is used to track the interfaces. The surface tension forces are modelled using a filtered sharp formulation, and the Stokes equations are solved using the PISO algorithm. A study on the snap-off mechanism, investigating the role of several parameters including contact angle and viscosity ratio, is presented. Results show that the threshold contact angle for snap-off increases from a value of 28◦ for a circular cross-section to 30-34◦ for a square cross-section and up to 40◦ for a triangular one. For a throat of square cross-section, increasing the viscosity of the injected phase results in a drop in the threshold contact angle from a value of 30◦ when µ = 1 to 26◦ when µ = 10 and down to 24◦ when µ = 20, where µ is the viscosity ratio. Finally, a rigorous spatial averaging procedure is presented, leading to a novel definition of the macroscopic capillary pressure. Simulations results of drainage on the scanned images of the rock samples are used to compare different estimates of the macroscopic capillary pressure. The comparison reveals that, contrary to what is commonly done following the traditional approach, use of surface average for the pressures is more appropriate than that of volume average, when averaging the microscopic balance equations relevant for pore-scale two-phase flows in porous media.

Subjects/Keywords: 620.1; Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Starnoni, M. (2017). Modelling single and two-phase flow on micro-CT images of rock samples. (Doctoral Dissertation). University of Aberdeen. Retrieved from https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152383020005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.720587

Chicago Manual of Style (16^th Edition):

Starnoni, Michele. “Modelling single and two-phase flow on micro-CT images of rock samples.” 2017. Doctoral Dissertation, University of Aberdeen. Accessed March 05, 2021. https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152383020005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.720587.

MLA Handbook (7^th Edition):

Starnoni, Michele. “Modelling single and two-phase flow on micro-CT images of rock samples.” 2017. Web. 05 Mar 2021.

Vancouver:

Starnoni M. Modelling single and two-phase flow on micro-CT images of rock samples. [Internet] [Doctoral dissertation]. University of Aberdeen; 2017. [cited 2021 Mar 05]. Available from: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152383020005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.720587.

Council of Science Editors:

Starnoni M. Modelling single and two-phase flow on micro-CT images of rock samples. [Doctoral Dissertation]. University of Aberdeen; 2017. Available from: https://abdn.alma.exlibrisgroup.com/view/delivery/44ABE_INST/12152383020005941 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.720587

University of Johannesburg

14. Henning, Barend Jacobus. Aspects of fluid flow over vibrating bluff bodies.

Degree: 2012, University of Johannesburg

URL: http://hdl.handle.net/10210/7366

►

D.Ing.

The aim of this thesis is to research the use of Computational Fluid Dynamics (CFD) as design tool to predict fluid flow across stationary… (more)

▼

D.Ing.

The aim of this thesis is to research the use of Computational Fluid Dynamics (CFD) as design tool to predict fluid flow across stationary and moving bluff bodies. The principle of moving meshes is introduced to move the body vertically with respect to time. The moving mesh idea is first tested on a square body with a coarse discretized flow domain for transient conditions. The results can be animated to see how the flow pattern and mesh change with time. The idea is then implemented on a cylinder with a very fine mesh to capture the build-up and dispersion of vortices being shed from the cylinder as it moves cyclically for transient conditions. With this first approach a bluff body is forced to move cyclically with respect to time in cross flow. Many possibilities now exist to apply this idea further for other applications where forced vibration is important.The next approach is to use CFD to simulate flow-induced vibrations of bluff bodies. The pressure force on the bluff body is considered as a first approach to solve this problem. The inertia mass of the body balancing the effect of the pressure force on the body is first used, but the results indicate that damping and stiffness also have to be considered to obtain more realistic results. The effect of the pressure force on the body shows generally a downwards movement of the body for the first period of simulation and in the case of the square, after six time steps of the period of simulation the .pressure force switches to a positive value with resulting upwards movement of the body. The effect of the total force (shear + pressure) on a bluff body is not presented in this thesis. CFD as design tool is researched for various bundle configurations of cylinders. A new concept of split cylinders is researched and the best configuration obtained for various horizontal and vertical spacings of downstream- and upstream cylinders and cylinder halves. Experimental results on cylinders in a - small scale wind tunnel are used to compare the numerical results with the obtained pressure distribution around a stationary cylinder and the concept of velocity distribution over and between a split cylinder. Further development of the numerical flow model is necessary to include elasticity and longer three dimensional spanwise lengths of the object to obtain predictions of real flow-induced vibrations of bluff bodies. This first approach of numerical predictions of flow across stationary and moving bluff bodies creates many possibilities of complementing experimental results and comparing the obtained results with each other.

Subjects/Keywords: Fluid dynamics – Mathematical models; Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Henning, B. J. (2012). Aspects of fluid flow over vibrating bluff bodies. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/7366

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):

Henning, Barend Jacobus. “Aspects of fluid flow over vibrating bluff bodies.” 2012. Thesis, University of Johannesburg. Accessed March 05, 2021. http://hdl.handle.net/10210/7366.

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

MLA Handbook (7^th Edition):

Henning, Barend Jacobus. “Aspects of fluid flow over vibrating bluff bodies.” 2012. Web. 05 Mar 2021.

Vancouver:

Henning BJ. Aspects of fluid flow over vibrating bluff bodies. [Internet] [Thesis]. University of Johannesburg; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10210/7366.

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

Council of Science Editors:

Henning BJ. Aspects of fluid flow over vibrating bluff bodies. [Thesis]. University of Johannesburg; 2012. Available from: http://hdl.handle.net/10210/7366

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

Hong Kong University of Science and Technology

15. Cheung, Yin Nee. Dynamics of acoustically actuated droplet breakup and manipulation in a flow-focusing microfluidic device.

Degree: 2012, Hong Kong University of Science and Technology

URL: http://repository.ust.hk/ir/Record/1783.1-7521 ; https://doi.org/10.14711/thesis-b1176706 ; http://repository.ust.hk/ir/bitstream/1783.1-7521/1/th_redirect.html

► Droplets of sizes in the range of micro- to nano-scales found many applications in biomedical industry, food processing industry, chemical and mechanical engineering. Control on… (more)

▼ Droplets of sizes in the range of micro- to nano-scales found many applications in biomedical industry, food processing industry, chemical and mechanical engineering. Control on the size of droplets produced in microfluidic devices can be achieved through passive (only controlled by the flow fields of the two immiscible fluids) and active methods (external actuation provided). The present work focuses on the investigation of a novel method with the incorporation of a piezoelectric actuator to control the droplet formation process in a flow-focusing device. Acoustic actuation causes a boundary-induced microstreaming flow in the two immiscible fluids at the cross-junction of the device. The scale of the microstreaming flow is within the Stokes layer and is periodic in nature. Phase-resolved micro-particle-image-velocity (μPIV) is applied for extracting the global, phase-averaged and periodic components from the microstreaming flow. Vibrating fluid-fluid interfaces are observed and acoustic actuation causes a reduction in the droplet size. Characterization of droplet formation under acoustic actuation is performed. The effects of the control parameters, flow rate ratio, voltage and frequency of acoustic actuation, continuous phases with different viscosities on droplet formation are characterized. Droplet size decreases with increase in the voltage and frequency of acoustic actuation. Continuous phases with higher viscosities cause a restrained vibration motion at the fluid-fluid interface with a reduced extent of vibration. Since droplet formation mainly depends on the extent of the vibration motion, acoustic actuation is more effective in affecting the breakup of droplets in a continuous phase with a lower viscosity. The evolution of the interfacial curvature during the whole droplet formation process in a flow-focusing device is investigated. Two critical curvature values that determine the detachment of liquid thread from walls of orifice and the onset of pinch-off are identified. The rate of evolution mainly depends on the flow rates of the two immiscible fluids and the flow through the gap between the liquid thread and the walls of the orifice. Acoustic actuation reduces the time for triggering the onset of pinch-off as the vibrating interface hinders the process of relaxation of interfacial energy and making pinch-off easier to trigger. Keywords: droplet formation dynamics, immiscible microfluidics, micro-particle-image-velocimetry (μPIV), acoustofluidics, microchannel flow, microelectromechanical systems (MEMS)

Subjects/Keywords: Microfluidic devices ; Drops – Fluid dynamics ; Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Cheung, Y. N. (2012). Dynamics of acoustically actuated droplet breakup and manipulation in a flow-focusing microfluidic device. (Thesis). Hong Kong University of Science and Technology. Retrieved from http://repository.ust.hk/ir/Record/1783.1-7521 ; https://doi.org/10.14711/thesis-b1176706 ; http://repository.ust.hk/ir/bitstream/1783.1-7521/1/th_redirect.html

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):

Cheung, Yin Nee. “Dynamics of acoustically actuated droplet breakup and manipulation in a flow-focusing microfluidic device.” 2012. Thesis, Hong Kong University of Science and Technology. Accessed March 05, 2021. http://repository.ust.hk/ir/Record/1783.1-7521 ; https://doi.org/10.14711/thesis-b1176706 ; http://repository.ust.hk/ir/bitstream/1783.1-7521/1/th_redirect.html.

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

MLA Handbook (7^th Edition):

Cheung, Yin Nee. “Dynamics of acoustically actuated droplet breakup and manipulation in a flow-focusing microfluidic device.” 2012. Web. 05 Mar 2021.

Vancouver:

Cheung YN. Dynamics of acoustically actuated droplet breakup and manipulation in a flow-focusing microfluidic device. [Internet] [Thesis]. Hong Kong University of Science and Technology; 2012. [cited 2021 Mar 05]. Available from: http://repository.ust.hk/ir/Record/1783.1-7521 ; https://doi.org/10.14711/thesis-b1176706 ; http://repository.ust.hk/ir/bitstream/1783.1-7521/1/th_redirect.html.

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

Council of Science Editors:

Cheung YN. Dynamics of acoustically actuated droplet breakup and manipulation in a flow-focusing microfluidic device. [Thesis]. Hong Kong University of Science and Technology; 2012. Available from: http://repository.ust.hk/ir/Record/1783.1-7521 ; https://doi.org/10.14711/thesis-b1176706 ; http://repository.ust.hk/ir/bitstream/1783.1-7521/1/th_redirect.html

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

Iowa State University

16. Nadeem, Hannan. An investigation of droplet growth and phase separation in an oil and water emulsion under controlled shear and temperature conditions.

Degree: 2020, Iowa State University

URL: https://lib.dr.iastate.edu/etd/18192

► Many researchers in the food and pharmaceutical industry have emphasized the importance of emulsion stability, and the need for stability tests. However, the emulsion stability… (more)

▼ Many researchers in the food and pharmaceutical industry have emphasized the importance of emulsion stability, and the need for stability tests. However, the emulsion stability tests can take a long time before meaningful results can be obtained. Therefore, there is a need for accelerated emulsion stability tests, and there aren’t many research studies for it. For this research, an oil in water type emulsion’s stability is studied primarily using optical methods. The effects of shear strain and temperature on phase separation, droplet growth, and emulsion’s physical characteristics are reported. The Taylor Couette flow reactor is used to detect the onset of phase separation. Optical microscopy is used to confirm that the droplet growth is due to coalescence, which leads to complete phase separation. Laboratory equipment and apparatus are used to measure and record emulsion’s physical characteristics like viscosity, interfacial tension, and density. To detect the onset of phase separation as a function of time, the emulsion is tested at a temperature range of 25 °C to 35 °C and a shear strain range of 10.5 s-1to 62.8 s-1. At some experimental conditions, there was no phase separation detected, labeled as stable cases. Cases where phase separation is detected, are labeled as separated cases. A boundary is fitted to segregate the experimental conditions that lead to stable cases from the conditions leading to separated cases with the help of dimensionless parameters, Eotvos, and Galilei numbers. The boundary line decreases linearly as the shear strain rate increases from 10.5 s-1to 47.1 s-1. For shear strain rates, higher than 47.1 s-1, the boundary line decreases exponentially as there is a drastic drop in viscosity of the emulsion. Through viscosity measurements, it is confirmed that the emulsion is Non-Newtonian fluid, and the interfacial tension also decreases with increasing temperature.The research presented is valid for the investigation of emulsion stability characteristics. The results will help Pfizer Inc. to understand this emulsion’s stability and help them with the manufacturing process design.

Subjects/Keywords: Emulsions; Fluid dynamics; Fluid mechanics; Phase separation

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Nadeem, H. (2020). An investigation of droplet growth and phase separation in an oil and water emulsion under controlled shear and temperature conditions. (Thesis). Iowa State University. Retrieved from https://lib.dr.iastate.edu/etd/18192

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):

Nadeem, Hannan. “An investigation of droplet growth and phase separation in an oil and water emulsion under controlled shear and temperature conditions.” 2020. Thesis, Iowa State University. Accessed March 05, 2021. https://lib.dr.iastate.edu/etd/18192.

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

MLA Handbook (7^th Edition):

Nadeem, Hannan. “An investigation of droplet growth and phase separation in an oil and water emulsion under controlled shear and temperature conditions.” 2020. Web. 05 Mar 2021.

Vancouver:

Nadeem H. An investigation of droplet growth and phase separation in an oil and water emulsion under controlled shear and temperature conditions. [Internet] [Thesis]. Iowa State University; 2020. [cited 2021 Mar 05]. Available from: https://lib.dr.iastate.edu/etd/18192.

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

Council of Science Editors:

Nadeem H. An investigation of droplet growth and phase separation in an oil and water emulsion under controlled shear and temperature conditions. [Thesis]. Iowa State University; 2020. Available from: https://lib.dr.iastate.edu/etd/18192

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

17. Babu, Raveendra B. Fluid mechanics : a study of some fluid flows; -.

Degree: Mathematics, 2015, Sri Venkateswara University

URL: http://shodhganga.inflibnet.ac.in/handle/10603/53282

None

Bibliography p.103-104

Advisors/Committee Members: Mohan, Chandra I.

Subjects/Keywords: Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Babu, R. B. (2015). Fluid mechanics : a study of some fluid flows; -. (Thesis). Sri Venkateswara University. Retrieved from http://shodhganga.inflibnet.ac.in/handle/10603/53282

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):

Babu, Raveendra B. “Fluid mechanics : a study of some fluid flows; -.” 2015. Thesis, Sri Venkateswara University. Accessed March 05, 2021. http://shodhganga.inflibnet.ac.in/handle/10603/53282.

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

MLA Handbook (7^th Edition):

Babu, Raveendra B. “Fluid mechanics : a study of some fluid flows; -.” 2015. Web. 05 Mar 2021.

Vancouver:

Babu RB. Fluid mechanics : a study of some fluid flows; -. [Internet] [Thesis]. Sri Venkateswara University; 2015. [cited 2021 Mar 05]. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/53282.

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

Council of Science Editors:

Babu RB. Fluid mechanics : a study of some fluid flows; -. [Thesis]. Sri Venkateswara University; 2015. Available from: http://shodhganga.inflibnet.ac.in/handle/10603/53282

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

Dalhousie University

18. Dodsworth, Laura. Operational Parametric Study of a Prototype Tesla Pump.

Degree: Master of Applied Science, Department of Mechanical Engineering, 2016, Dalhousie University

URL: http://hdl.handle.net/10222/71602

► A parametric study of a prototype Tesla pump was performed for various disk pack spacings and rotational speeds. The 15 thou spacing was the most… (more)

Subjects/Keywords: turbomachinery; fluid mechanics; Tesla pump

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Dodsworth, L. (2016). Operational Parametric Study of a Prototype Tesla Pump. (Masters Thesis). Dalhousie University. Retrieved from http://hdl.handle.net/10222/71602

Chicago Manual of Style (16^th Edition):

Dodsworth, Laura. “Operational Parametric Study of a Prototype Tesla Pump.” 2016. Masters Thesis, Dalhousie University. Accessed March 05, 2021. http://hdl.handle.net/10222/71602.

MLA Handbook (7^th Edition):

Dodsworth, Laura. “Operational Parametric Study of a Prototype Tesla Pump.” 2016. Web. 05 Mar 2021.

Vancouver:

Dodsworth L. Operational Parametric Study of a Prototype Tesla Pump. [Internet] [Masters thesis]. Dalhousie University; 2016. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/10222/71602.

Council of Science Editors:

Dodsworth L. Operational Parametric Study of a Prototype Tesla Pump. [Masters Thesis]. Dalhousie University; 2016. Available from: http://hdl.handle.net/10222/71602

Oregon State University

19. Levenspiel, Octave. Bed-wall heat transfer coefficients in a fluidized system.

Degree: PhD, Chemical Engineering, 1952, Oregon State University

URL: http://hdl.handle.net/1957/52183

Subjects/Keywords: Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Levenspiel, O. (1952). Bed-wall heat transfer coefficients in a fluidized system. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/52183

Chicago Manual of Style (16^th Edition):

Levenspiel, Octave. “Bed-wall heat transfer coefficients in a fluidized system.” 1952. Doctoral Dissertation, Oregon State University. Accessed March 05, 2021. http://hdl.handle.net/1957/52183.

MLA Handbook (7^th Edition):

Levenspiel, Octave. “Bed-wall heat transfer coefficients in a fluidized system.” 1952. Web. 05 Mar 2021.

Vancouver:

Levenspiel O. Bed-wall heat transfer coefficients in a fluidized system. [Internet] [Doctoral dissertation]. Oregon State University; 1952. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1957/52183.

Council of Science Editors:

Levenspiel O. Bed-wall heat transfer coefficients in a fluidized system. [Doctoral Dissertation]. Oregon State University; 1952. Available from: http://hdl.handle.net/1957/52183

Oregon State University

20. Grover, Shamsher Singh. Heat transfer between immiscible liquids for concurrent flow.

Degree: MS, Chemical Engineering, 1952, Oregon State University

URL: http://hdl.handle.net/1957/52367

Subjects/Keywords: Fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Grover, S. S. (1952). Heat transfer between immiscible liquids for concurrent flow. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/52367

Chicago Manual of Style (16^th Edition):

Grover, Shamsher Singh. “Heat transfer between immiscible liquids for concurrent flow.” 1952. Masters Thesis, Oregon State University. Accessed March 05, 2021. http://hdl.handle.net/1957/52367.

MLA Handbook (7^th Edition):

Grover, Shamsher Singh. “Heat transfer between immiscible liquids for concurrent flow.” 1952. Web. 05 Mar 2021.

Vancouver:

Grover SS. Heat transfer between immiscible liquids for concurrent flow. [Internet] [Masters thesis]. Oregon State University; 1952. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1957/52367.

Council of Science Editors:

Grover SS. Heat transfer between immiscible liquids for concurrent flow. [Masters Thesis]. Oregon State University; 1952. Available from: http://hdl.handle.net/1957/52367

Temple University

21. Soroush, Fariborz. A Novel Microfluidic System for Screening Anti-inflammatory Therapeutics.

Degree: PhD, 2018, Temple University

URL: http://digital.library.temple.edu/u?/p245801coll10,500666

►

Mechanical Engineering

Inflammation is a crucial physiological protective response of body to infection or injury. However, in pathological conditions such as sepsis or radiation damage,… (more)

▼

Mechanical Engineering

Inflammation is a crucial physiological protective response of body to infection or injury. However, in pathological conditions such as sepsis or radiation damage, the body may exhibit a strong inflammatory response and cause organ damage. Loss of barrier function and leukocyte dysfunction plays an important role during inflammation (e.g. sepsis, radiation exposure, etc.) and induces tissue injury through release of proteases and oxygen radicals. Currently, pharmacological therapies for inflammatory conditions are supportive and there is an urgent need for specific treatments to effectively target key points in neutrophil-endothelial interaction. Our research team has developed a novel microfluidic system to study the mechanisms by which Protein Kinase C isotype delta (PKCδ) impacts neutrophil-endothelial interactions and its inhibition can protect vascular endothelial integrity and attenuate sepsis-induced tissue damage. This novel system will allow for rational design of next generation therapeutics for treating inflammation. We will utilize our novel biomimetic microfluidic assay (bMFA) to systematically delineate the mechanism by which PKCδ regulates individual steps in neutrophil recruitment to the inflamed/activated endothelium. In Specific Aim 1, we will investigate the impact of PKCδ inhibition on neutrophil interaction with endothelial cells as well as adhesion molecules expression. In Specific Aim 2, we will test the specificity of the PKCδ inhibitor in microcirculation and among different species. In Specific Aim 3, we will investigate the role of PKCδ in crosstalk between neutrophils and endothelial cells and endothelium integrity after high dose X-ray irradiation. Our findings indicate that PKCδ inhibition significantly reduces neutrophil interactions with the endothelium during acute inflammation. Our novel biomimetic microfluidic assay (bMFA) provides a rapid screening system for testing the specific response of novel therapeutics. Moreover, results indicate that in many cases the response of murine cells to inflammatory signals may be a poor predictor of response in human cells. Furthermore, our discoveries indicate a key role for PKCδ regulation of radiation-induced changes in endothelial cell barrier structure and function, expression of several key cell adhesion molecules, neutrophil-endothelial cell interaction and leukocyte migration through the endothelium. Our findings indicate that PKCδ-TAT peptide inhibitor may offer an important approach for treating inflammatory disease and we propose that PKCδ inhibition may serve as a novel medical countermeasure for treating radiation-induced vascular damage. Findings from this study will not only elucidate the mechanisms of action for this novel therapeutic but also provide a roadmap for the rational design of future therapeutics for acute inflammatory diseases. The long-term goal of this work is to establish microfluidic devices as a novel prescreening tool for screening therapeutics to allow for fast and precise prediction of…

Advisors/Committee Members: Kiani, Mohammad F.;, Kilpatrick, Laurie, Kunapuli, Satya P., Pillapakkam, Shriram;.

Subjects/Keywords: Bioengineering; Fluid mechanics; Immunology

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Soroush, F. (2018). A Novel Microfluidic System for Screening Anti-inflammatory Therapeutics. (Doctoral Dissertation). Temple University. Retrieved from http://digital.library.temple.edu/u?/p245801coll10,500666

Chicago Manual of Style (16^th Edition):

Soroush, Fariborz. “A Novel Microfluidic System for Screening Anti-inflammatory Therapeutics.” 2018. Doctoral Dissertation, Temple University. Accessed March 05, 2021. http://digital.library.temple.edu/u?/p245801coll10,500666.

MLA Handbook (7^th Edition):

Soroush, Fariborz. “A Novel Microfluidic System for Screening Anti-inflammatory Therapeutics.” 2018. Web. 05 Mar 2021.

Vancouver:

Soroush F. A Novel Microfluidic System for Screening Anti-inflammatory Therapeutics. [Internet] [Doctoral dissertation]. Temple University; 2018. [cited 2021 Mar 05]. Available from: http://digital.library.temple.edu/u?/p245801coll10,500666.

Council of Science Editors:

Soroush F. A Novel Microfluidic System for Screening Anti-inflammatory Therapeutics. [Doctoral Dissertation]. Temple University; 2018. Available from: http://digital.library.temple.edu/u?/p245801coll10,500666

22. Chhunchha, Aakash C. Aerodynamic Heating Analysis of Re-entry Space Capsule Using Computational Fluid Dynamics.

Degree: 2018, California State University, Long Beach

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=10752510

► The present study deals with solving two-dimensional Reynolds Averaged Navier-Stokes equations for the Fire II re-entry capsule using Computational Fluid Dynamics (CFD). The primary… (more)

Subjects/Keywords: Fluid mechanics; Aerospace engineering

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Chhunchha, A. C. (2018). Aerodynamic Heating Analysis of Re-entry Space Capsule Using Computational Fluid Dynamics. (Thesis). California State University, Long Beach. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=10752510

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):

Chhunchha, Aakash C. “Aerodynamic Heating Analysis of Re-entry Space Capsule Using Computational Fluid Dynamics.” 2018. Thesis, California State University, Long Beach. Accessed March 05, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=10752510.

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

MLA Handbook (7^th Edition):

Chhunchha, Aakash C. “Aerodynamic Heating Analysis of Re-entry Space Capsule Using Computational Fluid Dynamics.” 2018. Web. 05 Mar 2021.

Vancouver:

Chhunchha AC. Aerodynamic Heating Analysis of Re-entry Space Capsule Using Computational Fluid Dynamics. [Internet] [Thesis]. California State University, Long Beach; 2018. [cited 2021 Mar 05]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10752510.

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

Council of Science Editors:

Chhunchha AC. Aerodynamic Heating Analysis of Re-entry Space Capsule Using Computational Fluid Dynamics. [Thesis]. California State University, Long Beach; 2018. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10752510

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

Cornell University

23. Barbati, Alexander. Transport Of Passive And Active Scalars In Microfluidics: Device Design For Solute Delivery To Rat Hippocampal Neurons, Improved Analytical Expressions For Electrokinetic Transport In Porous And Charged Layers, And Electrokinetic Interrogation Of Perfluorinated Ionomeric (Nafion) Thin Films.

Degree: PhD, Mechanical Engineering, 2014, Cornell University

URL: http://hdl.handle.net/1813/36038

► First, we outline the design, modeling, and fabrication of a glass-polymer microdevice for the spatio-temporal delivery of neutral solutes to coherently grown rat hippocamapal neurons.… (more)

Subjects/Keywords: microfluidics; electrokinetics; fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Barbati, A. (2014). Transport Of Passive And Active Scalars In Microfluidics: Device Design For Solute Delivery To Rat Hippocampal Neurons, Improved Analytical Expressions For Electrokinetic Transport In Porous And Charged Layers, And Electrokinetic Interrogation Of Perfluorinated Ionomeric (Nafion) Thin Films. (Doctoral Dissertation). Cornell University. Retrieved from http://hdl.handle.net/1813/36038

Chicago Manual of Style (16^th Edition):

Barbati, Alexander. “Transport Of Passive And Active Scalars In Microfluidics: Device Design For Solute Delivery To Rat Hippocampal Neurons, Improved Analytical Expressions For Electrokinetic Transport In Porous And Charged Layers, And Electrokinetic Interrogation Of Perfluorinated Ionomeric (Nafion) Thin Films.” 2014. Doctoral Dissertation, Cornell University. Accessed March 05, 2021. http://hdl.handle.net/1813/36038.

MLA Handbook (7^th Edition):

Barbati, Alexander. “Transport Of Passive And Active Scalars In Microfluidics: Device Design For Solute Delivery To Rat Hippocampal Neurons, Improved Analytical Expressions For Electrokinetic Transport In Porous And Charged Layers, And Electrokinetic Interrogation Of Perfluorinated Ionomeric (Nafion) Thin Films.” 2014. Web. 05 Mar 2021.

Vancouver:

Barbati A. Transport Of Passive And Active Scalars In Microfluidics: Device Design For Solute Delivery To Rat Hippocampal Neurons, Improved Analytical Expressions For Electrokinetic Transport In Porous And Charged Layers, And Electrokinetic Interrogation Of Perfluorinated Ionomeric (Nafion) Thin Films. [Internet] [Doctoral dissertation]. Cornell University; 2014. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1813/36038.

Council of Science Editors:

Barbati A. Transport Of Passive And Active Scalars In Microfluidics: Device Design For Solute Delivery To Rat Hippocampal Neurons, Improved Analytical Expressions For Electrokinetic Transport In Porous And Charged Layers, And Electrokinetic Interrogation Of Perfluorinated Ionomeric (Nafion) Thin Films. [Doctoral Dissertation]. Cornell University; 2014. Available from: http://hdl.handle.net/1813/36038

Cornell University

24. Solberg, Joshua. Susceptibility of Quadcopter Flight to Turbulence.

Degree: M.S., Mechanical Engineering, Mechanical Engineering, 2018, Cornell University

URL: http://hdl.handle.net/1813/59689

► Quadcopters are used in a wide variety of applications, almost all of which require flying in turbulent conditions. Especially for small quadcopters, whose velocities are… (more)

Subjects/Keywords: turbulence; Fluid Mechanics; Quadcopters

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Solberg, J. (2018). Susceptibility of Quadcopter Flight to Turbulence. (Masters Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/59689

Chicago Manual of Style (16^th Edition):

Solberg, Joshua. “Susceptibility of Quadcopter Flight to Turbulence.” 2018. Masters Thesis, Cornell University. Accessed March 05, 2021. http://hdl.handle.net/1813/59689.

MLA Handbook (7^th Edition):

Solberg, Joshua. “Susceptibility of Quadcopter Flight to Turbulence.” 2018. Web. 05 Mar 2021.

Vancouver:

Solberg J. Susceptibility of Quadcopter Flight to Turbulence. [Internet] [Masters thesis]. Cornell University; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1813/59689.

Council of Science Editors:

Solberg J. Susceptibility of Quadcopter Flight to Turbulence. [Masters Thesis]. Cornell University; 2018. Available from: http://hdl.handle.net/1813/59689

25. Shang, Yeru. A numerical analysis of a corrugated channel flow by Large Eddy Simulation.

Degree: PhD, 2019, University of Sussex

URL: http://sro.sussex.ac.uk/id/eprint/89241/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.801027

► This thesis presents a detailed numerical analysis of flow through a corrugated channel. The geometry has a rectangular cross section. The bottom wall is corrugated… (more)

▼ This thesis presents a detailed numerical analysis of flow through a corrugated channel. The geometry has a rectangular cross section. The bottom wall is corrugated with periodic cavities which is a two-dimensional representation of a commercial stainless steel flexible pipe, and the top and two side walls are flat plates. The Reynolds number based on bulk flow velocity and the hydraulic diameter of the channel is 5300. The principal objective is to understand the flow field in this corrugated channel, which benefits the future design of engineering equipment with corrugated wall. Several Sub-grid Scale (SGS) models are first validated on plane channel flows with different grid densities. Then a Large Eddy Simulation (LES) is performed on the corrugated channel with 128 corrugations and the synthetic turbulence inlet. Flow features of different zones in the channel are analysed in detail, focusing on the time-averaged results, development of the boundary layer, and mechanism of transition. The principal message emerging from this analysis is that the flow in the corrugated channel is more complicated than suggested previously by the experimental study and the two side walls have profound effect on the flow behaviour. The discrepancies between LES predictions and experimental data are also discussed. After a detailed examination, a number of problems and open questions are raised concerning the experimental results and setups. Meanwhile, the LES results are validated from various aspects. In addition, a study of this corrugated channel with 16 corrugations and a periodic boundary condition is also conducted, with the focus on hydrodynamic interaction and vortex evolution. It shows that the case for 16 corrugations with the periodic boundary condition can reproduce the flow characteristics of the fully turbulent region predicted in the case of 128 corrugations. The features of vortex evolution shown in the experiment are reproduced and understood by current LES.

Subjects/Keywords: TA0357 Applied fluid mechanics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Shang, Y. (2019). A numerical analysis of a corrugated channel flow by Large Eddy Simulation. (Doctoral Dissertation). University of Sussex. Retrieved from http://sro.sussex.ac.uk/id/eprint/89241/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.801027

Chicago Manual of Style (16^th Edition):

Shang, Yeru. “A numerical analysis of a corrugated channel flow by Large Eddy Simulation.” 2019. Doctoral Dissertation, University of Sussex. Accessed March 05, 2021. http://sro.sussex.ac.uk/id/eprint/89241/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.801027.

MLA Handbook (7^th Edition):

Shang, Yeru. “A numerical analysis of a corrugated channel flow by Large Eddy Simulation.” 2019. Web. 05 Mar 2021.

Vancouver:

Shang Y. A numerical analysis of a corrugated channel flow by Large Eddy Simulation. [Internet] [Doctoral dissertation]. University of Sussex; 2019. [cited 2021 Mar 05]. Available from: http://sro.sussex.ac.uk/id/eprint/89241/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.801027.

Council of Science Editors:

Shang Y. A numerical analysis of a corrugated channel flow by Large Eddy Simulation. [Doctoral Dissertation]. University of Sussex; 2019. Available from: http://sro.sussex.ac.uk/id/eprint/89241/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.801027

26. Nagai, Toshiki. Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems.

Degree: 2018, University of Colorado at Boulder

URL: http://pqdtopen.proquest.com/#viewpdf?dispub=10844711

► This thesis presents a space-time extended finite element method (space-time XFEM) based on the Heaviside enrichment for transient problems with moving interfaces, and its… (more)

▼ This thesis presents a space-time extended finite element method (space-time XFEM) based on the Heaviside enrichment for transient problems with moving interfaces, and its applications to the fluid-structure interaction (FSI) analysis. The Heaviside-enriched XFEM is a promising method to discretize partial differential equations with discontinuities in space. However, significant approximation errors are introduced by time stepping schemes when the interface geometry changes in time. The proposed space-time XFEM applies the finite element discretization and the Heaviside enrichment in both space and time with elements forming a space-time slab. A simple space-time scheme is introduced to integrate the weak form of the governing equations. This scheme considers spatial intersection configuration at multiple temporal integration points. Standard spatial integration techniques can be applied for each spatial configuration. Nitsche's method and the face-oriented ghost-penalty method are extended to the proposed space-time XFEM formulation. The stability, accuracy and flexibility of the space-time XFEM for various interface conditions including moving interfaces are demonstrated with structural and fluid problems. Moreover, the space-time XFEM enables analyzing complex FSI problems using moving interfaces, such as FSI with contact. Two FSI methods using moving interfaces (full-Eulerian FSI and Lagrangian-immersed FSI) are studied. The Lagrangian-immersed FSI method is a mixed formulation of Lagrangian and Eulerian descriptions. As solid and fluid meshes are independently defined, the FSI is computed between non-matching interfaces based on Nitsche's method and projection techniques adopted from computational contact mechanics. The stabilized Lagrange multiplier method is used for contact. Numerical examples of FSI and FSI-contact problems provide insight into the characteristics of the combination of the space-time XFEM and the Lagrangian-immersed FSI method. The proposed combination is a promising method which has the versatility for various multi-physics simulations and the applicability such as optimization.

Subjects/Keywords: Fluid mechanics; Computational physics

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Nagai, T. (2018). Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems. (Thesis). University of Colorado at Boulder. Retrieved from http://pqdtopen.proquest.com/#viewpdf?dispub=10844711

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):

Nagai, Toshiki. “Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems.” 2018. Thesis, University of Colorado at Boulder. Accessed March 05, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=10844711.

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

MLA Handbook (7^th Edition):

Nagai, Toshiki. “Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems.” 2018. Web. 05 Mar 2021.

Vancouver:

Nagai T. Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems. [Internet] [Thesis]. University of Colorado at Boulder; 2018. [cited 2021 Mar 05]. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10844711.

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

Council of Science Editors:

Nagai T. Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems. [Thesis]. University of Colorado at Boulder; 2018. Available from: http://pqdtopen.proquest.com/#viewpdf?dispub=10844711

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

University of Toronto

27. Wang, Edwin Shao Wen. Slow Flow of a Viscoelastic Fluid Past a Circular Cylinder.

Degree: 2012, University of Toronto

URL: http://hdl.handle.net/1807/32289

►

Flow around a cylinder is important in the motion of microorganisms found in biological viscoelastic fluids that propel themselves by flagella. Flow around a cylinder… (more)

Subjects/Keywords: Fluid Mechanics; Rheology; 0548

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Wang, E. S. W. (2012). Slow Flow of a Viscoelastic Fluid Past a Circular Cylinder. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/32289

Chicago Manual of Style (16^th Edition):

Wang, Edwin Shao Wen. “Slow Flow of a Viscoelastic Fluid Past a Circular Cylinder.” 2012. Masters Thesis, University of Toronto. Accessed March 05, 2021. http://hdl.handle.net/1807/32289.

MLA Handbook (7^th Edition):

Wang, Edwin Shao Wen. “Slow Flow of a Viscoelastic Fluid Past a Circular Cylinder.” 2012. Web. 05 Mar 2021.

Vancouver:

Wang ESW. Slow Flow of a Viscoelastic Fluid Past a Circular Cylinder. [Internet] [Masters thesis]. University of Toronto; 2012. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/1807/32289.

Council of Science Editors:

Wang ESW. Slow Flow of a Viscoelastic Fluid Past a Circular Cylinder. [Masters Thesis]. University of Toronto; 2012. Available from: http://hdl.handle.net/1807/32289

Washington University in St. Louis

28. Schovanec, Cory. CFD modeling of Vertical Axis Wind Turbine Arrays using Actuator Cylinder Theory.

Degree: MS, Mechanical Engineering & Materials Science, 2020, Washington University in St. Louis

URL: https://openscholarship.wustl.edu/eng_etds/532

► The goal of this thesis is to analyze the flow field and power generation from a vertical axis wind turbine (VAWT) by extending the Actuator… (more)

Subjects/Keywords: Aerodynamics and Fluid Mechanics; Engineering

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Schovanec, C. (2020). CFD modeling of Vertical Axis Wind Turbine Arrays using Actuator Cylinder Theory. (Thesis). Washington University in St. Louis. Retrieved from https://openscholarship.wustl.edu/eng_etds/532

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):

Schovanec, Cory. “CFD modeling of Vertical Axis Wind Turbine Arrays using Actuator Cylinder Theory.” 2020. Thesis, Washington University in St. Louis. Accessed March 05, 2021. https://openscholarship.wustl.edu/eng_etds/532.

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

MLA Handbook (7^th Edition):

Schovanec, Cory. “CFD modeling of Vertical Axis Wind Turbine Arrays using Actuator Cylinder Theory.” 2020. Web. 05 Mar 2021.

Vancouver:

Schovanec C. CFD modeling of Vertical Axis Wind Turbine Arrays using Actuator Cylinder Theory. [Internet] [Thesis]. Washington University in St. Louis; 2020. [cited 2021 Mar 05]. Available from: https://openscholarship.wustl.edu/eng_etds/532.

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

Council of Science Editors:

Schovanec C. CFD modeling of Vertical Axis Wind Turbine Arrays using Actuator Cylinder Theory. [Thesis]. Washington University in St. Louis; 2020. Available from: https://openscholarship.wustl.edu/eng_etds/532

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

University of California – San Diego

29. Kolb, Erik. Experimental Approach to the Blue Whirl.

Degree: Engineering Sciences (Engineering Physics), 2018, University of California – San Diego

URL: http://www.escholarship.org/uc/item/7qz5c7bn

► This study focuses on the phenomena of the blue whirl. A structure was built to produce a blue whirl. The apparatus was built with the… (more)

Subjects/Keywords: Fluid mechanics; Environmental engineering

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Kolb, E. (2018). Experimental Approach to the Blue Whirl. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/7qz5c7bn

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):

Kolb, Erik. “Experimental Approach to the Blue Whirl.” 2018. Thesis, University of California – San Diego. Accessed March 05, 2021. http://www.escholarship.org/uc/item/7qz5c7bn.

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

MLA Handbook (7^th Edition):

Kolb, Erik. “Experimental Approach to the Blue Whirl.” 2018. Web. 05 Mar 2021.

Vancouver:

Kolb E. Experimental Approach to the Blue Whirl. [Internet] [Thesis]. University of California – San Diego; 2018. [cited 2021 Mar 05]. Available from: http://www.escholarship.org/uc/item/7qz5c7bn.

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

Council of Science Editors:

Kolb E. Experimental Approach to the Blue Whirl. [Thesis]. University of California – San Diego; 2018. Available from: http://www.escholarship.org/uc/item/7qz5c7bn

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

30. Silvestri, Anton. The attenuation of sweep events within the turbulent boundary layer over a flat plate using a micro-cavity array.

Degree: 2018, University of Adelaide

URL: http://hdl.handle.net/2440/118055

► For most aeronautical applications skin friction drag is a significant issue for efficient operation. It is estimated that 49% of the total drag an aircraft… (more)

▼ For most aeronautical applications skin friction drag is a significant issue for efficient operation. It is estimated that 49% of the total drag an aircraft experiences is due to skin friction drag and a small reduction of 5% would currently result in an annual saving of $3.3 billion US dollars. The large Reynolds number at which aerospace applications typically operate results in a turbulent boundary layer, which causes a large increase in shear stresses and a subsequent increase in skin friction drag. The key culprits for the large shear stresses are the turbulent boundary layer structures that form once the boundary layer transitions from the initial laminar state, the most influential of which are the coherent structures. These structures pump fluid into (sweep) and away (ejection) from the near wall region and generate the shear stresses. Hence the aim of this research is to manipulate the turbulent boundary layer to reduce the effect of the aforementioned coherent structures. Specific attention has been applied to the passive application of a micro-cavity array as a potential control technique to attenuate the coherent structures. The micro-cavity array consists of a cavity arranged flush with the surface, underneath of which is a backing cavity similar to the design of a Helmholtz resonator. As a passive control technique, this device aims to have the advantages of an easy implementation and the absence of an external power source, with targeted control of the coherent structures commonly achieved by active systems. The micro-cavity array aims to capture and dampen the sweep events, therefore reducing the strength of both the ejection and sweep events due to their high dependence on one another. As such the present work assesses the ability of an array of micro-cavities to reduce the turbulent properties of a fully developed boundary layer. Previous results from the flow excited Helmholtz resonator and a two-dimensional square cavity on a flat plate have confirmed the potential of the micro-cavity array. Both techniques achieved successful control of the boundary layer and attenuation of the coherent structures. However these applications had limitations at higher Reynolds numbers and as a result a smaller device such as the micro-cavity is proposed and forms the basis of this thesis. Being of smaller size, the shear layer is hypothesised not to break apart while traversing the small orifices of the micro-cavity, which occurs for the larger flow excited Helmholtz resonator and results in an adverse pressure gradient and an undesirable increase in the disturbances and viscous drag in the boundary layer. To investigate the potential of the proposed micro-cavity array, the device has been thoroughly examined experimentally at a range of Reynolds numbers (1195 < Reθ < 3771). Experiments were predominately focused on identifying the potential of the micro-cavity, whilst evaluating the impact of the orifice distribution along the cavity array and the effect of other geometric parameters, including the length of the… Advisors/Committee Members: Arjomandi, Maziar (advisor), Chin, Rey (advisor), Cazzolato, Benjamin (advisor), Zander, Anthony (advisor), School of Mechanical Engineering (school).

Subjects/Keywords: Fluid mechanics; turbulence; drag reduction

10 more images…

Record Details Similar Records Cite « Share

❌

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

APA (6^th Edition):

Silvestri, A. (2018). The attenuation of sweep events within the turbulent boundary layer over a flat plate using a micro-cavity array. (Thesis). University of Adelaide. Retrieved from http://hdl.handle.net/2440/118055

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):

Silvestri, Anton. “The attenuation of sweep events within the turbulent boundary layer over a flat plate using a micro-cavity array.” 2018. Thesis, University of Adelaide. Accessed March 05, 2021. http://hdl.handle.net/2440/118055.

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

MLA Handbook (7^th Edition):

Silvestri, Anton. “The attenuation of sweep events within the turbulent boundary layer over a flat plate using a micro-cavity array.” 2018. Web. 05 Mar 2021.

Vancouver:

Silvestri A. The attenuation of sweep events within the turbulent boundary layer over a flat plate using a micro-cavity array. [Internet] [Thesis]. University of Adelaide; 2018. [cited 2021 Mar 05]. Available from: http://hdl.handle.net/2440/118055.

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

Council of Science Editors:

Silvestri A. The attenuation of sweep events within the turbulent boundary layer over a flat plate using a micro-cavity array. [Thesis]. University of Adelaide; 2018. Available from: http://hdl.handle.net/2440/118055

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

Open Access Theses and Dissertations