subject:(Aerodynamic drag)

Delft University of Technology

1. Pattnaik, Pallav (author). Aerodynamic investigation of the near wake flow topology on a two-man bobsleigh.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:45feed12-76f6-4ebe-b6e2-20c6e3ecccc6

► Drag measurements on bluff-bodies such as bobsleighs using force balance systems have been in prevalence for a few decades. However these studies do not reveal… (more)

▼ Drag measurements on bluff-bodies such as bobsleighs using force balance systems have been in prevalence for a few decades. However these studies do not reveal anything on the flow behaviour around the body. In the recent past, various flow visualization techniques have been applied to investigate the flow behaviour around bobsleighs. Even though these studies have highlighted the qualitative flow features, there is a lack of a deep insight into the wake flow topology and the behaviour of the flow structures that are formed in the highly three-dimensional flow. Additionally, when the bobsleigh moves in a curvilinear path, the front cowling rotates with respect to the rear cowling, causing an increase in the frontal area exposed to the wind and in turn a higher drag. However, this perception is not quite straightforward and requires a thorough understanding of the mechanisms and sources of drag generation, in particular at different front cowling angles. Stereoscopic Particle Image Velocimetry has been used to study the near-wake flow topology of a scaled bobsleigh model. From the velocity field information obtained from PIV, the pressure field in the wake of the bobsleigh model is determined from the Pressure Poisson Equation (PPE) using the methodology outlined by Oudheusden [41]. With the knowledge of the velocity and the pressure fields, the aerodynamic drag is computed using the control volume approach on a wake plane which is at approximately two diameters from the model. The drag obtained from PIV is compared to that obtained from balance measurements. The effects of different bobsleigh configurations on the aerodynamic drag is observed. Secondly, uncertainty quantification of the aerodynamic drag is performed. Finally, a Proper Orthogonal Decomposition (POD) analysis is performed for the velocity fluctuations in order to gain an insight on the motion of the flow structures formed in the wake. The investigation of the near wake flow topology of the bobsleigh reveals the presence of two counter-rotating vortices with a significant downwash between them in case of the reference configuration. The motion and behaviour of these vortices is obtained by performing the PIV analysis on multiple vertical wake planes. The investigation of the effect of the front cowling misalignment on the drag reveals that there is a reduction of drag for smaller misalignment angles (upto 5°) and a marginal increase in drag for further increase of misalignment (from 5° to 20°). From the analysis of aerodynamic drag conducted on a vertical plane that is approximately two diameters behind the model, it can be seen that the momentum deficit is the highest contributor to the aerodynamic drag (88%) followed by the Reynolds stresses (9%) and pressure (3%). It is also observed that the aerodynamic drag obtained is in good agreement with the results obtained from the balance measurements with a variation of only 2 to 3%. The uncertainty analysis of drag shows that among the different flow variables which affect the drag, the… Advisors/Committee Members: Sciacchitano, Andrea (mentor), Scarano, Fulvio (graduation committee), Timmer, Nando (graduation committee), van Oudheusden, Bas (graduation committee), Delft University of Technology (degree granting institution).

Subjects/Keywords: Bobsleigh; Aerodynamic drag; PIV; Wind Tunnel

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APA (6^th Edition):

Pattnaik, P. (. (2017). Aerodynamic investigation of the near wake flow topology on a two-man bobsleigh. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:45feed12-76f6-4ebe-b6e2-20c6e3ecccc6

Chicago Manual of Style (16^th Edition):

Pattnaik, Pallav (author). “Aerodynamic investigation of the near wake flow topology on a two-man bobsleigh.” 2017. Masters Thesis, Delft University of Technology. Accessed January 18, 2021. http://resolver.tudelft.nl/uuid:45feed12-76f6-4ebe-b6e2-20c6e3ecccc6.

MLA Handbook (7^th Edition):

Pattnaik, Pallav (author). “Aerodynamic investigation of the near wake flow topology on a two-man bobsleigh.” 2017. Web. 18 Jan 2021.

Vancouver:

Pattnaik P(. Aerodynamic investigation of the near wake flow topology on a two-man bobsleigh. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Jan 18]. Available from: http://resolver.tudelft.nl/uuid:45feed12-76f6-4ebe-b6e2-20c6e3ecccc6.

Council of Science Editors:

Pattnaik P(. Aerodynamic investigation of the near wake flow topology on a two-man bobsleigh. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:45feed12-76f6-4ebe-b6e2-20c6e3ecccc6

Delft University of Technology

2. Hoogendoorn, Marijn (author). Base Drag Reduction of Heavy Duty Vehicles by Combining a Tail and Guide Vanes: A Numerical and Experimental Analysis.

Degree: 2018, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:bd10a9ef-54df-47fd-b8c2-5a9d5d9afa03

► To limit the threat posed by global climate change it is vital to reduce the emissions of the transport sector in the short term. Two… (more)

Subjects/Keywords: bluff body; Aerodynamic drag; drag reduction; heavy duty vehicle

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APA (6^th Edition):

Hoogendoorn, M. (. (2018). Base Drag Reduction of Heavy Duty Vehicles by Combining a Tail and Guide Vanes: A Numerical and Experimental Analysis. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:bd10a9ef-54df-47fd-b8c2-5a9d5d9afa03

Chicago Manual of Style (16^th Edition):

Hoogendoorn, Marijn (author). “Base Drag Reduction of Heavy Duty Vehicles by Combining a Tail and Guide Vanes: A Numerical and Experimental Analysis.” 2018. Masters Thesis, Delft University of Technology. Accessed January 18, 2021. http://resolver.tudelft.nl/uuid:bd10a9ef-54df-47fd-b8c2-5a9d5d9afa03.

MLA Handbook (7^th Edition):

Hoogendoorn, Marijn (author). “Base Drag Reduction of Heavy Duty Vehicles by Combining a Tail and Guide Vanes: A Numerical and Experimental Analysis.” 2018. Web. 18 Jan 2021.

Vancouver:

Hoogendoorn M(. Base Drag Reduction of Heavy Duty Vehicles by Combining a Tail and Guide Vanes: A Numerical and Experimental Analysis. [Internet] [Masters thesis]. Delft University of Technology; 2018. [cited 2021 Jan 18]. Available from: http://resolver.tudelft.nl/uuid:bd10a9ef-54df-47fd-b8c2-5a9d5d9afa03.

Council of Science Editors:

Hoogendoorn M(. Base Drag Reduction of Heavy Duty Vehicles by Combining a Tail and Guide Vanes: A Numerical and Experimental Analysis. [Masters Thesis]. Delft University of Technology; 2018. Available from: http://resolver.tudelft.nl/uuid:bd10a9ef-54df-47fd-b8c2-5a9d5d9afa03

NSYSU

3. Gao, Zih-Jie. Fixed Height Circular Motion Analysis for a Quadcopter Aircraft.

Degree: Master, Mechanical and Electro-Mechanical Engineering, 2017, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728117-155744

► With highly development of the quadcopter, many practical applications become even more important. The quadcopter owns advantages of high flexibility and small volume. When it… (more)

Subjects/Keywords: Aerodynamic drag; Trajectory control; Circular motion; Quadcopter aircraft

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APA (6^th Edition):

Gao, Z. (2017). Fixed Height Circular Motion Analysis for a Quadcopter Aircraft. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728117-155744

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):

Gao, Zih-Jie. “Fixed Height Circular Motion Analysis for a Quadcopter Aircraft.” 2017. Thesis, NSYSU. Accessed January 18, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728117-155744.

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

MLA Handbook (7^th Edition):

Gao, Zih-Jie. “Fixed Height Circular Motion Analysis for a Quadcopter Aircraft.” 2017. Web. 18 Jan 2021.

Vancouver:

Gao Z. Fixed Height Circular Motion Analysis for a Quadcopter Aircraft. [Internet] [Thesis]. NSYSU; 2017. [cited 2021 Jan 18]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728117-155744.

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

Council of Science Editors:

Gao Z. Fixed Height Circular Motion Analysis for a Quadcopter Aircraft. [Thesis]. NSYSU; 2017. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0728117-155744

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

Addis Ababa University

4. Mamo, Nigusie. AERODYNAMIC CHARACTERISTICS AND AERODYNAMIC SHAPE OPTIMIZATION OF ETHIOPIAN NATIONAL TRAIN, CASE STUDY ON ADDIS ABABA DIRE DAWA PASSENGER TRAIN .

Degree: 2014, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/6417

► The aim of this study is to study and improve the aerodynamic performance (drag coefficient, lift coefficient, etc.), to reduce the energy consumption and checking… (more)

Subjects/Keywords: CFD; aerodynamic drag; shape optimization; cross wind stability

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APA (6^th Edition):

Mamo, N. (2014). AERODYNAMIC CHARACTERISTICS AND AERODYNAMIC SHAPE OPTIMIZATION OF ETHIOPIAN NATIONAL TRAIN, CASE STUDY ON ADDIS ABABA DIRE DAWA PASSENGER TRAIN . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/6417

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):

Mamo, Nigusie. “AERODYNAMIC CHARACTERISTICS AND AERODYNAMIC SHAPE OPTIMIZATION OF ETHIOPIAN NATIONAL TRAIN, CASE STUDY ON ADDIS ABABA DIRE DAWA PASSENGER TRAIN .” 2014. Thesis, Addis Ababa University. Accessed January 18, 2021. http://etd.aau.edu.et/dspace/handle/123456789/6417.

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

MLA Handbook (7^th Edition):

Mamo, Nigusie. “AERODYNAMIC CHARACTERISTICS AND AERODYNAMIC SHAPE OPTIMIZATION OF ETHIOPIAN NATIONAL TRAIN, CASE STUDY ON ADDIS ABABA DIRE DAWA PASSENGER TRAIN .” 2014. Web. 18 Jan 2021.

Vancouver:

Mamo N. AERODYNAMIC CHARACTERISTICS AND AERODYNAMIC SHAPE OPTIMIZATION OF ETHIOPIAN NATIONAL TRAIN, CASE STUDY ON ADDIS ABABA DIRE DAWA PASSENGER TRAIN . [Internet] [Thesis]. Addis Ababa University; 2014. [cited 2021 Jan 18]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/6417.

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

Council of Science Editors:

Mamo N. AERODYNAMIC CHARACTERISTICS AND AERODYNAMIC SHAPE OPTIMIZATION OF ETHIOPIAN NATIONAL TRAIN, CASE STUDY ON ADDIS ABABA DIRE DAWA PASSENGER TRAIN . [Thesis]. Addis Ababa University; 2014. Available from: http://etd.aau.edu.et/dspace/handle/123456789/6417

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

University of Leicester

5. Abd Rabbo, M. F. Aerodynamic drag of ridge arrays in adverse pressure gradients.

Degree: PhD, 1976, University of Leicester

URL: https://figshare.com/articles/Aerodynamic_drag_of_ridge_arrays_in_adverse_pressure_gradients_/10187483 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.483329

► Drag measurements for excrescence arrays of square section mounted on a smooth wall and subjected to two adverse pressure gradients in equilibrium are obtained. Differences… (more)

Subjects/Keywords: 629.1323; Aerodynamic drag measurement

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APA (6^th Edition):

Abd Rabbo, M. F. (1976). Aerodynamic drag of ridge arrays in adverse pressure gradients. (Doctoral Dissertation). University of Leicester. Retrieved from https://figshare.com/articles/Aerodynamic_drag_of_ridge_arrays_in_adverse_pressure_gradients_/10187483 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.483329

Chicago Manual of Style (16^th Edition):

Abd Rabbo, M F. “Aerodynamic drag of ridge arrays in adverse pressure gradients.” 1976. Doctoral Dissertation, University of Leicester. Accessed January 18, 2021. https://figshare.com/articles/Aerodynamic_drag_of_ridge_arrays_in_adverse_pressure_gradients_/10187483 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.483329.

MLA Handbook (7^th Edition):

Abd Rabbo, M F. “Aerodynamic drag of ridge arrays in adverse pressure gradients.” 1976. Web. 18 Jan 2021.

Vancouver:

Abd Rabbo MF. Aerodynamic drag of ridge arrays in adverse pressure gradients. [Internet] [Doctoral dissertation]. University of Leicester; 1976. [cited 2021 Jan 18]. Available from: https://figshare.com/articles/Aerodynamic_drag_of_ridge_arrays_in_adverse_pressure_gradients_/10187483 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.483329.

Council of Science Editors:

Abd Rabbo MF. Aerodynamic drag of ridge arrays in adverse pressure gradients. [Doctoral Dissertation]. University of Leicester; 1976. Available from: https://figshare.com/articles/Aerodynamic_drag_of_ridge_arrays_in_adverse_pressure_gradients_/10187483 ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.483329

University of Cape Town

6. Lutz, Thomas. The effect of the boundary layer present in wind tunnels on the aerodynamic drag of a model truck.

Degree: Image, Mechanical Engineering, 1997, University of Cape Town

URL: http://hdl.handle.net/11427/17542

► This thesis deals with a system that reduces the oncoming boundary layer displacement thickness in a wind tunnel. The device is then used to examine… (more)

▼ This thesis deals with a system that reduces the oncoming boundary layer displacement thickness in a wind tunnel. The device is then used to examine the effect that this boundary layer has on the aerodynamic drag of a standard truck, which is classified as a bluff body with a high ground clearance and the same truck fitted with skirts all round, which is then classified as a bluff body with a low ground clearance. To gain insight into this field of industrial aerodynamics, an extensive literature survey was done in which all the relevant SAE papers onwards from the late sixties were studied and summarised in the first section of this report. The second section deals with a system that can limit the boundary layer displacement thickness in the test section of the 3/4 open jet wind tunnel. Through investigations and an extensive literature research a suction device was designed and built. This boundary layer removal system was then tested to ensure that the main flow indicators are not influenced by the suction and thus lie within internationally accepted limits. Included in this section are a description of the truck model and the other instruments or devices used to complete the testing. The third section deals with the aerodynamic drag experienced by the bluff body with a high ground clearance. Included in the third section is an investigation that deals with the aerodynamic drag of the same truck model, when skirting has been added which considerably lowers the ground clearance. The results obtained from the above investigations indicate that the drag of the Ground Simulation model without skirts is increased by about 3.8% with the removal of the boundary layer and up to 10% for the model with the skirts. It is thus shown that the farther the object protrudes into the boundary layer, the larger the increase in drag will be once this boundary layer has been removed. These figures were obtained from testing the model at 22.2m/s free stream velocity and a 6mm wheel-ground clearance, with the wheels rotating. Advisors/Committee Members: Sayers, Anthony (advisor).

Subjects/Keywords: Mechanical Engineering; aerodynamic drag

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APA (6^th Edition):

Lutz, T. (1997). The effect of the boundary layer present in wind tunnels on the aerodynamic drag of a model truck. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/17542

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):

Lutz, Thomas. “The effect of the boundary layer present in wind tunnels on the aerodynamic drag of a model truck.” 1997. Thesis, University of Cape Town. Accessed January 18, 2021. http://hdl.handle.net/11427/17542.

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

MLA Handbook (7^th Edition):

Lutz, Thomas. “The effect of the boundary layer present in wind tunnels on the aerodynamic drag of a model truck.” 1997. Web. 18 Jan 2021.

Vancouver:

Lutz T. The effect of the boundary layer present in wind tunnels on the aerodynamic drag of a model truck. [Internet] [Thesis]. University of Cape Town; 1997. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11427/17542.

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

Council of Science Editors:

Lutz T. The effect of the boundary layer present in wind tunnels on the aerodynamic drag of a model truck. [Thesis]. University of Cape Town; 1997. Available from: http://hdl.handle.net/11427/17542

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

University of Notre Dame

7. Christopher M. Jasinski. Experimental Fluid Mechanic Evaluation of Liner Drag and Acoustic-Drag Interaction</h1>.

Degree: Aerospace and Mechanical Engineering, 2018, University of Notre Dame

URL: https://curate.nd.edu/show/2v23vt17j8k

► The purpose of this dissertation is to establish the current state of the art in acoustic liner drag research, describe recently designed and built… (more)

▼ The purpose of this dissertation is to establish the current state of the art in acoustic liner drag research, describe recently designed and built facilities at the University of Notre Dame for conducting such research, discuss the coupling of aerodynamic drag and acoustic excitation with liners, and offer conclusions and recommendations for future work in the area. Conventional acoustic liners for ducted turbofan engine nacelles have been proven to reliably reduce engine noise in commercial aircraft for a narrow frequency range. Traditional acoustic liners consist of a porous facesheet, honeycomb core, and solid backing. These liners are placed in the fore and aft bypass ducts of commercial jet engine nacelles. As technology has developed, new liner designs, including variable-depth cores, show promise of reducing noise in a broad frequency range. Additionally, the next generation of aircraft design may allow for more aircraft surface area to be covered by acoustic liners, further reducing aircraft noise perceived on the ground. Before these advanced acoustic technologies can make their way onto commercial aircraft fleets, the aerodynamic drag caused by the liners must be understood. Using the Mach 0.6 Wind Tunnel at the University of Notre Dame, a direct drag measurement system has been developed utilizing a linear force balance. In combination with indirect drag measurements taken at the Curved Duct Test Rig at the NASA Langley Research Center, measurement confidence has been established. Using hotwire anemometry, mean velocity profiles were measured as well as the turbulence intensity, burst phenomena, and spectra for several liner types. The results suggest a strong correlation between the aerodynamic drag measured and the presence of burst events in the boundary layer. Lastly the coupling of acoustic excitation and liner drag will be explored as measured drag increases when in the presence of high levels of tonal noise. This dissertation aims to provide a comprehensive report on a new method for evaluating liner drag, analyze a database of velocity profile measurements, and describe a proposal for a reduced drag concept utilizing known capabilities for smooth walls. Advisors/Committee Members: Thomas Corke, Research Director.

Subjects/Keywords: Acoustic liner; drag; aerodynamic; skin friction; experimental; sound; aircraft

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APA (6^th Edition):

Jasinski, C. M. (2018). Experimental Fluid Mechanic Evaluation of Liner Drag and Acoustic-Drag Interaction</h1>. (Thesis). University of Notre Dame. Retrieved from https://curate.nd.edu/show/2v23vt17j8k

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):

Jasinski, Christopher M.. “Experimental Fluid Mechanic Evaluation of Liner Drag and Acoustic-Drag Interaction</h1>.” 2018. Thesis, University of Notre Dame. Accessed January 18, 2021. https://curate.nd.edu/show/2v23vt17j8k.

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

MLA Handbook (7^th Edition):

Jasinski, Christopher M.. “Experimental Fluid Mechanic Evaluation of Liner Drag and Acoustic-Drag Interaction</h1>.” 2018. Web. 18 Jan 2021.

Vancouver:

Jasinski CM. Experimental Fluid Mechanic Evaluation of Liner Drag and Acoustic-Drag Interaction</h1>. [Internet] [Thesis]. University of Notre Dame; 2018. [cited 2021 Jan 18]. Available from: https://curate.nd.edu/show/2v23vt17j8k.

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

Council of Science Editors:

Jasinski CM. Experimental Fluid Mechanic Evaluation of Liner Drag and Acoustic-Drag Interaction</h1>. [Thesis]. University of Notre Dame; 2018. Available from: https://curate.nd.edu/show/2v23vt17j8k

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

University of Arizona

8. Drummond, James E. A method of determining the cowl drag of an isolated ducted fan in an incompressible flow .

Degree: 1962, University of Arizona

URL: http://hdl.handle.net/10150/319416

Subjects/Keywords: Drag (Aerodynamics); Aerodynamic measurements.

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

APA (6^th Edition):

Drummond, J. E. (1962). A method of determining the cowl drag of an isolated ducted fan in an incompressible flow . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/319416

Chicago Manual of Style (16^th Edition):

Drummond, James E. “A method of determining the cowl drag of an isolated ducted fan in an incompressible flow .” 1962. Masters Thesis, University of Arizona. Accessed January 18, 2021. http://hdl.handle.net/10150/319416.

MLA Handbook (7^th Edition):

Drummond, James E. “A method of determining the cowl drag of an isolated ducted fan in an incompressible flow .” 1962. Web. 18 Jan 2021.

Vancouver:

Drummond JE. A method of determining the cowl drag of an isolated ducted fan in an incompressible flow . [Internet] [Masters thesis]. University of Arizona; 1962. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/10150/319416.

Council of Science Editors:

Drummond JE. A method of determining the cowl drag of an isolated ducted fan in an incompressible flow . [Masters Thesis]. University of Arizona; 1962. Available from: http://hdl.handle.net/10150/319416

Arizona State University

9. Nolastname, Kashyap Sathyamurthy. Effect of Incorporating Aerodynamic Drag Model on Trajectory Tracking Performance of DJI F330 Quadcopter.

Degree: Aerospace Engineering, 2020, Arizona State University

URL: http://repository.asu.edu/items/57415

► Control algorithm development for quadrotor is usually based solely on rigid body dynamics neglecting aerodynamics. Recent work has demonstrated that such a model is suited… (more)

Subjects/Keywords: Aerospace engineering; Aerodynamic effects; Control System; Drag; Quadrotors; Trajectory generation; UAV

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APA (6^th Edition):

Nolastname, K. S. (2020). Effect of Incorporating Aerodynamic Drag Model on Trajectory Tracking Performance of DJI F330 Quadcopter. (Masters Thesis). Arizona State University. Retrieved from http://repository.asu.edu/items/57415

Chicago Manual of Style (16^th Edition):

Nolastname, Kashyap Sathyamurthy. “Effect of Incorporating Aerodynamic Drag Model on Trajectory Tracking Performance of DJI F330 Quadcopter.” 2020. Masters Thesis, Arizona State University. Accessed January 18, 2021. http://repository.asu.edu/items/57415.

MLA Handbook (7^th Edition):

Nolastname, Kashyap Sathyamurthy. “Effect of Incorporating Aerodynamic Drag Model on Trajectory Tracking Performance of DJI F330 Quadcopter.” 2020. Web. 18 Jan 2021.

Vancouver:

Nolastname KS. Effect of Incorporating Aerodynamic Drag Model on Trajectory Tracking Performance of DJI F330 Quadcopter. [Internet] [Masters thesis]. Arizona State University; 2020. [cited 2021 Jan 18]. Available from: http://repository.asu.edu/items/57415.

Council of Science Editors:

Nolastname KS. Effect of Incorporating Aerodynamic Drag Model on Trajectory Tracking Performance of DJI F330 Quadcopter. [Masters Thesis]. Arizona State University; 2020. Available from: http://repository.asu.edu/items/57415

Brno University of Technology

10. Šardický, Jakub. Moderní metody snižování aerodynamického odporu vozidel: Modern methods for aerodynamic drag reduction of road vehicles.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/40521

► This work is focused on the summary of the elements that contribute reducing aerodynamic resistance of vehicles. Aerodynamic drag is about one-third of the total… (more)

Subjects/Keywords: Prvky snižující odpor vozidla Aerodynamický odpor OpenFoam CFD; Elements of reducing the drag of the vehicle Aerodynamic drag OpenFoam CFD

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APA (6^th Edition):

Šardický, J. (2018). Moderní metody snižování aerodynamického odporu vozidel: Modern methods for aerodynamic drag reduction of road vehicles. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/40521

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):

Šardický, Jakub. “Moderní metody snižování aerodynamického odporu vozidel: Modern methods for aerodynamic drag reduction of road vehicles.” 2018. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/40521.

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

MLA Handbook (7^th Edition):

Šardický, Jakub. “Moderní metody snižování aerodynamického odporu vozidel: Modern methods for aerodynamic drag reduction of road vehicles.” 2018. Web. 18 Jan 2021.

Vancouver:

Šardický J. Moderní metody snižování aerodynamického odporu vozidel: Modern methods for aerodynamic drag reduction of road vehicles. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/40521.

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

Council of Science Editors:

Šardický J. Moderní metody snižování aerodynamického odporu vozidel: Modern methods for aerodynamic drag reduction of road vehicles. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/40521

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

Brno University of Technology

11. Oboňa, Matúš. Vliv rotace pneumatiky na aerodynamiku automobilu: Influence of tyre rotation on road vehicle aerodynamics.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/40270

► The aim of this bachelor thesis is to describe the influence of tyre rotation on vehicle aerodynamics. It explains differences between the simplified shape of… (more)

Subjects/Keywords: aerodynamika; pneumatika; rotácia; aerodynamický odpor; vozidlo; aerodynamics; tyre; rotation; aerodynamic drag; vehicle

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APA (6^th Edition):

Oboňa, M. (2018). Vliv rotace pneumatiky na aerodynamiku automobilu: Influence of tyre rotation on road vehicle aerodynamics. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/40270

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):

Oboňa, Matúš. “Vliv rotace pneumatiky na aerodynamiku automobilu: Influence of tyre rotation on road vehicle aerodynamics.” 2018. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/40270.

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

MLA Handbook (7^th Edition):

Oboňa, Matúš. “Vliv rotace pneumatiky na aerodynamiku automobilu: Influence of tyre rotation on road vehicle aerodynamics.” 2018. Web. 18 Jan 2021.

Vancouver:

Oboňa M. Vliv rotace pneumatiky na aerodynamiku automobilu: Influence of tyre rotation on road vehicle aerodynamics. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/40270.

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

Council of Science Editors:

Oboňa M. Vliv rotace pneumatiky na aerodynamiku automobilu: Influence of tyre rotation on road vehicle aerodynamics. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/40270

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

Brno University of Technology

12. Job, Štefan. Experimentální měření aerodynamických silových účinků: Experimental measurements of aerodynamic forces.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/5043

► This thesis deals with the effect of the aerodynamic forces on a vehicle. It contains the description of the test run of the vehicle, the… (more)

Subjects/Keywords: Aerodynamika; odpory; vozidlo; přítlak; dojezdová zkouška; Aerodynamics; aerodynamic drag; vehicle; downforce; coastdown test

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APA (6^th Edition):

Job, �. (2018). Experimentální měření aerodynamických silových účinků: Experimental measurements of aerodynamic forces. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/5043

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):

Job, Štefan. “Experimentální měření aerodynamických silových účinků: Experimental measurements of aerodynamic forces.” 2018. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/5043.

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

MLA Handbook (7^th Edition):

Job, Štefan. “Experimentální měření aerodynamických silových účinků: Experimental measurements of aerodynamic forces.” 2018. Web. 18 Jan 2021.

Vancouver:

Job �. Experimentální měření aerodynamických silových účinků: Experimental measurements of aerodynamic forces. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/5043.

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

Council of Science Editors:

Job �. Experimentální měření aerodynamických silových účinků: Experimental measurements of aerodynamic forces. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/5043

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

Brno University of Technology

13. Šuľak, Andrej. Aerodynamické prvky nákladních souprav: Aerodynamic design of heavy commercial vehicles.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/60203

► This bachelor's thesis deals with the currently available aerodynamic drag reduction devices for articulated and drawbar trucks. The main goal is to reveal the given… (more)

Subjects/Keywords: aerodynamika; nákladné vozidlo; aerodynamické prvky; aerodynamická účinnosť; aerodynamics; truck; drag reduction devices; aerodynamic efficiency

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APA (6^th Edition):

Šuľak, A. (2019). Aerodynamické prvky nákladních souprav: Aerodynamic design of heavy commercial vehicles. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/60203

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):

Šuľak, Andrej. “Aerodynamické prvky nákladních souprav: Aerodynamic design of heavy commercial vehicles.” 2019. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/60203.

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

MLA Handbook (7^th Edition):

Šuľak, Andrej. “Aerodynamické prvky nákladních souprav: Aerodynamic design of heavy commercial vehicles.” 2019. Web. 18 Jan 2021.

Vancouver:

Šuľak A. Aerodynamické prvky nákladních souprav: Aerodynamic design of heavy commercial vehicles. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/60203.

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

Council of Science Editors:

Šuľak A. Aerodynamické prvky nákladních souprav: Aerodynamic design of heavy commercial vehicles. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/60203

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

14. Momoh, John Kester Onyebuchi. An experimental and theoretical investigation of novel aircraft drag reduction.

Degree: PhD, 2019, University of Hertfordshire

URL: http://hdl.handle.net/2299/21817

► Air transportation is an important part of the world's economic and indispensable transportation system. The major institutions in the world and the aviation authorities are… (more)

▼ Air transportation is an important part of the world's economic and indispensable transportation system. The major institutions in the world and the aviation authorities are well aware of the demanding expectations of the public for cheaper transportation cost and at the same time the need to reduce the negative impact of aircraft or air-transportation system on the atmosphere which include noise around airports and global warming to attain sustainability, reduction in the emission of green-house gases such Nitrogen oxides (x) and Carbon di-oxide. In order to achieve such a balance in the future, a strategy is required to match competitive excellence dedicated to meeting the demands of society while at the same time being cost effective for the airline companies and operating aviation authorities. Such a vision or concept cannot be realised without making further technological breakthroughs in engineering fields such as Aerodynamics and other discipline including materials and structures. Improving aircraft aerodynamic performance will have a direct impact on helping to implement these goals. Improving aircraft drag capabilities remains one of the big challenges faced by manufacturers of transport aircraft. It is known that for a typical transport aircraft drag, the induced drag amounts to about 40% of the total drag at cruise flight conditions and about 80 -90 percent of the total drag during aircraft take off. The skin friction drag constitute approximately one half of the total Aircraft drag at cruise flight configuration making up most of the remaining percentage of drag at cruise condition. The use of winglets or other wing-tip devices as a drag reduction device play a significant role in improving aircraft performance by acting as passive devices to reduce drag and enhance aircraft performance. In this thesis, four novel spiroid drag reduction devices are presented which were designed and optimised using STAR-CCM+ Optimate + which uses the SHERPA search algorithm as its optimisation tool. The objective of the optimisation process was set to maximise the lift-to-drag ratio. A low fidelity mesh model was used during the optimisation and the results were verified by using high-fidelity physics and mesh model. The developed devices showed an improve CL/CD ratio of up to 11 percent and improved CL by up to 7 percent while reducing CD by up to 4 percent with an 18 - 24 percent reduction in induced drag observed as well. The devices showed consistency in performance at several Mach numbers and angles of attacks. Thus, suggesting that such devices could be used over a wide range of flight regimes on aircraft or UAVs. The study also successfully demonstrated the capability to using this optimisation process in the design and development of such devices. Furthermore, a numerical investigation and wind tunnel verification study was performed on a wing tip turbine to ascertain the aerodynamic performance modification of using such a device at several Mach numbers, angles of attack, propeller rpms and sensitivity of…

Subjects/Keywords: Aerodynamic shape optimisation; Winglets; Drag reduction; Wing tip turbines; Computational Fluid Dynamics

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

APA (6^th Edition):

Momoh, J. K. O. (2019). An experimental and theoretical investigation of novel aircraft drag reduction. (Doctoral Dissertation). University of Hertfordshire. Retrieved from http://hdl.handle.net/2299/21817

Chicago Manual of Style (16^th Edition):

Momoh, John Kester Onyebuchi. “An experimental and theoretical investigation of novel aircraft drag reduction.” 2019. Doctoral Dissertation, University of Hertfordshire. Accessed January 18, 2021. http://hdl.handle.net/2299/21817.

MLA Handbook (7^th Edition):

Momoh, John Kester Onyebuchi. “An experimental and theoretical investigation of novel aircraft drag reduction.” 2019. Web. 18 Jan 2021.

Vancouver:

Momoh JKO. An experimental and theoretical investigation of novel aircraft drag reduction. [Internet] [Doctoral dissertation]. University of Hertfordshire; 2019. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/2299/21817.

Council of Science Editors:

Momoh JKO. An experimental and theoretical investigation of novel aircraft drag reduction. [Doctoral Dissertation]. University of Hertfordshire; 2019. Available from: http://hdl.handle.net/2299/21817

University of Dayton

15. Goodman, Steven Blake. Correlations Between Near Wake Velocity Fluctuations and Aerodynamic Efficiency for the SD7003 Airfoil.

Degree: MS(M.S.), Aerospace Engineering, 2018, University of Dayton

URL: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1524137507116155

► The correlation in turbulent properties between the near wake, far wake and aerodynamic efficiency has not been explored so far. Overall, the goal of this… (more)

▼ The correlation in turbulent properties between the near wake, far wake and aerodynamic efficiency has not been explored so far. Overall, the goal of this experimental investigation is to gain insight into the trends of the mean and fluctuating flow quantities in the wake of an airfoil and determine if a correlation exists with maximum aerodynamic efficiency, (L/D)_Max. Some of the mean flow quantities considered in this study are velocity components and vorticity. The fluctuating quantities explored in this investigation are root-mean-square velocities, Reynolds shear stress, turbulent kinetic energy, and turbulent production and dissipation. Inspiration for this research stems from previous work which identified a correlation between the mean and fluctuating flow properties with the drag coefficient and lift-to-drag ratio. However, this trend was found in the self-preserved wake, 10 chords downstream, where turbulent production is equal to dissipation. As a result, the mean and fluctuating flow properties remain the same from point to point in this region. This research examines the properties in the near wake, at the trailing edge, where production is expected to be higher than dissipation. In order to identify additional correlations between the near and far wake properties, as well as aerodynamic efficiency, the same airfoil and test facility from the far wake experiments were used in this study. Time Resolved Particle Image Velocimetry (PIV) was performed in the near wake of a wall-to-wall SD7003 wing for angles of attack (AoA) ranging from -2 to 8 degrees at the AFRL’s Horizontal Free-Surface Water Tunnel (HFWT) at a Reynolds number of ~68,000. Since water tunnels have a relatively high turbulence intensity, a detailed analysis of the wake was performed using various filtering techniques to quantify and correct the effect of the water tunnel turbulent intensity on the PIV data. Three different subtraction methods – Distortion Field, Mean, and RMS Subtraction – were studied in an attempt to remove the effects of freestream turbulence from the PIV data. Following the subtraction investigation, two filtering techniques, 3-Sigma and Vector Length Cutoff filters, were examined. Filters were studied due to the PIV time delay being tuned to the wake, which resulted in good correlations in the wake, compared to poor correlations in the freestream region.Results from the SD7003 near wake were split into three major sections: mean properties, fluctuating quantities, and some turbulent kinetic energy (TKE) budget components. Three distinct zones (groupings of similar slope) were seen in the momentum deficit, which suggest certain angle of attack ranges have different wake signatures. The momentum deficit in the near wake was found to match the trends in drag coefficient, aerodynamic efficiency, and far wake streamwise velocity: high gradient from 6° to 8° and decrease in magnitude around (L/D)_Max. These trends and groupings persisted with the near wake vorticity, and the groupings were also seen in… Advisors/Committee Members: Gunasekaran, Sid (Committee Chair).

Subjects/Keywords: Aerospace Engineering; Fluid Dynamics; Turbulence; aerodynamic efficiency; SD7003; velocity flucations; lift-to-drag ratio; aerodynamics

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APA (6^th Edition):

Goodman, S. B. (2018). Correlations Between Near Wake Velocity Fluctuations and Aerodynamic Efficiency for the SD7003 Airfoil. (Masters Thesis). University of Dayton. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=dayton1524137507116155

Chicago Manual of Style (16^th Edition):

Goodman, Steven Blake. “Correlations Between Near Wake Velocity Fluctuations and Aerodynamic Efficiency for the SD7003 Airfoil.” 2018. Masters Thesis, University of Dayton. Accessed January 18, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1524137507116155.

MLA Handbook (7^th Edition):

Goodman, Steven Blake. “Correlations Between Near Wake Velocity Fluctuations and Aerodynamic Efficiency for the SD7003 Airfoil.” 2018. Web. 18 Jan 2021.

Vancouver:

Goodman SB. Correlations Between Near Wake Velocity Fluctuations and Aerodynamic Efficiency for the SD7003 Airfoil. [Internet] [Masters thesis]. University of Dayton; 2018. [cited 2021 Jan 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1524137507116155.

Council of Science Editors:

Goodman SB. Correlations Between Near Wake Velocity Fluctuations and Aerodynamic Efficiency for the SD7003 Airfoil. [Masters Thesis]. University of Dayton; 2018. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=dayton1524137507116155

University of Waterloo

16. Neatby, Holly C. Experimental Evaluation of Flow-Measurement-Based Drag Estimation Methods.

Degree: 2014, University of Waterloo

URL: http://hdl.handle.net/10012/8453

► The accuracy of existing methods for estimating the drag based on experimental flow field measurements were assessed for two-dimensional bodies. The effects of control volume… (more)

▼ The accuracy of existing methods for estimating the drag based on experimental flow field measurements were assessed for two-dimensional bodies. The effects of control volume boundary placement and inherent simplifying assumptions were also investigated. Wind tunnel experiments were performed on a circular cylinder operating at a Reynolds number of 8,000 and 20,000, and on a NACA 0018 airfoil operating at a chord Reynolds number of 100,000 for three angles of attack (α), specifically, 5◦, 10◦, and 15◦. The circular cylinder experiments fall within the the shear layer transition flow regime. Airfoil investigations span both types of flow development common to low Reynolds number airfoil operation. For α = 5◦ and 10◦, a separation bubble forms on the upper surface of the airfoil, while, for α = 15◦, the flow separates without reattaching, resulting in a stalled airfoil. Wake velocity and pressure measurements were performed at several downstream locations to investigate the impact of control volume boundary placement. Wake profiles were measured between 3 and 40 diameters downstream from the circular cylinder axis and between 1 and 4.5 chord lengths from the trailing edge of the airfoil. In addition to wake profiles, the outer flow velocity variation was quantified to investigate the appropriate location to measure freestream flow characteristics in a test section with streamwise-varying outer flow conditions. The results show that drag estimates are strongly dependent on the streamwise position of the measured wake profile for all methods investigated. Drag estimates improved, and streamwise variation decreased, with increasing streamwise position of the flow measurements. For the pressure based method examined, wake measurements should be taken at least 10 times the projected model height downstream of the model. In the case of the circular cylinder, this is equivalent to 10 diameters and, for the airfoil investigated, it is approximately 1 chord length from the trailing edge. For the methods relying on velocity measurements, acceptable estimates of drag were possible when based on measurements taken at least 30 projected heights downstream, i.e., 30 diameters for the circular cylinder and 3 chord lengths for the airfoil model investigated. The findings highlight the importance of providing a detailed description of the methodology and experimental implementation for drag estimates based on flow field measurements. Finally the study offers guidelines for implementing momentum integral based drag calculations in future investigations.

Subjects/Keywords: aerodyamics; aerodynamic drag; experimental fluid mechanics; experimental techniques; low Reynolds number airfoil; circular cylinder; Mechanical engineering

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APA (6^th Edition):

Neatby, H. C. (2014). Experimental Evaluation of Flow-Measurement-Based Drag Estimation Methods. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/8453

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):

Neatby, Holly C. “Experimental Evaluation of Flow-Measurement-Based Drag Estimation Methods.” 2014. Thesis, University of Waterloo. Accessed January 18, 2021. http://hdl.handle.net/10012/8453.

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

MLA Handbook (7^th Edition):

Neatby, Holly C. “Experimental Evaluation of Flow-Measurement-Based Drag Estimation Methods.” 2014. Web. 18 Jan 2021.

Vancouver:

Neatby HC. Experimental Evaluation of Flow-Measurement-Based Drag Estimation Methods. [Internet] [Thesis]. University of Waterloo; 2014. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/10012/8453.

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

Council of Science Editors:

Neatby HC. Experimental Evaluation of Flow-Measurement-Based Drag Estimation Methods. [Thesis]. University of Waterloo; 2014. Available from: http://hdl.handle.net/10012/8453

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

Brno University of Technology

17. Tárnok, Gábor. Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles.

Degree: 2020, Brno University of Technology

URL: http://hdl.handle.net/11012/188029

The master's thesis deals with the aerodynamic interaction od two vehicles, modelling in CFD software, how the vehicle behaves in leeward. Advisors/Committee Members: Vančura, Jan (advisor), Beran, Martin (referee).

Subjects/Keywords: Aerodynamický odpor; aerodynamický tunel; CFD; Fluent; proudění; tlak; Aerodynamic drag; wind tunnel; CFD; Fluent; convection; pressure

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

APA (6^th Edition):

Tárnok, G. (2020). Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/188029

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):

Tárnok, Gábor. “Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles.” 2020. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/188029.

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

MLA Handbook (7^th Edition):

Tárnok, Gábor. “Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles.” 2020. Web. 18 Jan 2021.

Vancouver:

Tárnok G. Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles. [Internet] [Thesis]. Brno University of Technology; 2020. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/188029.

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

Council of Science Editors:

Tárnok G. Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles. [Thesis]. Brno University of Technology; 2020. Available from: http://hdl.handle.net/11012/188029

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

Delft University of Technology

18. Python, Benoit (author). Methodology Improvement for Performance Assessment of Pumping Kite Power Wing.

Degree: 2017, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:462bba8d-e0ca-419d-a3b0-aaa93c284625

►

Pumping kite power systems are a promising way of harnessing clean energy from high-altitude winds. A large kite flies crosswind developing a strong pulling force… (more)

Subjects/Keywords: Airborne Wind Energy; Pumping Kite Power System; Kite; Aerodynamic Properties; Lift-over-Drag Ratio; Tether Sag; Power Ratio

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APA (6^th Edition):

Python, B. (. (2017). Methodology Improvement for Performance Assessment of Pumping Kite Power Wing. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:462bba8d-e0ca-419d-a3b0-aaa93c284625

Chicago Manual of Style (16^th Edition):

Python, Benoit (author). “Methodology Improvement for Performance Assessment of Pumping Kite Power Wing.” 2017. Masters Thesis, Delft University of Technology. Accessed January 18, 2021. http://resolver.tudelft.nl/uuid:462bba8d-e0ca-419d-a3b0-aaa93c284625.

MLA Handbook (7^th Edition):

Python, Benoit (author). “Methodology Improvement for Performance Assessment of Pumping Kite Power Wing.” 2017. Web. 18 Jan 2021.

Vancouver:

Python B(. Methodology Improvement for Performance Assessment of Pumping Kite Power Wing. [Internet] [Masters thesis]. Delft University of Technology; 2017. [cited 2021 Jan 18]. Available from: http://resolver.tudelft.nl/uuid:462bba8d-e0ca-419d-a3b0-aaa93c284625.

Council of Science Editors:

Python B(. Methodology Improvement for Performance Assessment of Pumping Kite Power Wing. [Masters Thesis]. Delft University of Technology; 2017. Available from: http://resolver.tudelft.nl/uuid:462bba8d-e0ca-419d-a3b0-aaa93c284625

Brno University of Technology

19. Šilar, Josef. Aerodynamické parametry nákladních vozidel: Truck aerodynamic parameters.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/27007

► The main goal of this bachelor´s work is to depict and describe terms form the aerodynamics field in order to understand the problem of aerodynamics… (more)

Subjects/Keywords: vzdušný odpor; aerodynamika vozidel; nákladní vozidla; aerodynamické parametry; drag; aerodynamics of road vehicles; truck; aerodynamic parameters

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APA (6^th Edition):

Šilar, J. (2019). Aerodynamické parametry nákladních vozidel: Truck aerodynamic parameters. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/27007

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):

Šilar, Josef. “Aerodynamické parametry nákladních vozidel: Truck aerodynamic parameters.” 2019. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/27007.

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

MLA Handbook (7^th Edition):

Šilar, Josef. “Aerodynamické parametry nákladních vozidel: Truck aerodynamic parameters.” 2019. Web. 18 Jan 2021.

Vancouver:

Šilar J. Aerodynamické parametry nákladních vozidel: Truck aerodynamic parameters. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/27007.

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

Council of Science Editors:

Šilar J. Aerodynamické parametry nákladních vozidel: Truck aerodynamic parameters. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/27007

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

Brno University of Technology

20. Tárnok, Gábor. Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/71658

The master's thesis deals with the aerodynamic interaction od two vehicles, modelling in CFD software, how the vehicle behaves in leeward. Advisors/Committee Members: Vančura, Jan (advisor), Beran, Martin (referee).

Subjects/Keywords: Aerodynamický odpor; aerodynamický tunel; CFD; Fluent; proudění; tlak; Aerodynamic drag; wind tunnel; CFD; Fluent; convection; pressure

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APA (6^th Edition):

Tárnok, G. (2019). Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/71658

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):

Tárnok, Gábor. “Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles.” 2019. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/71658.

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

MLA Handbook (7^th Edition):

Tárnok, Gábor. “Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles.” 2019. Web. 18 Jan 2021.

Vancouver:

Tárnok G. Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/71658.

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

Council of Science Editors:

Tárnok G. Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/71658

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

Brno University of Technology

21. Šmerda, Ondřej. Aerodynamika automobilů v poválečném období: Post-war automotive aerodynamics.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/66735

► This Bachelor thesis deals with charting the development of the automotive aerodynamics in the post-war period. It focuses on principles that go along with car… (more)

Subjects/Keywords: aerodynamika; osobní automobil; proudění; aerodynamický odpor; historický vývoj; aerodynamics; passenger car; flowing; aerodynamic drag; historic development

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APA (6^th Edition):

Šmerda, O. (2019). Aerodynamika automobilů v poválečném období: Post-war automotive aerodynamics. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/66735

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):

Šmerda, Ondřej. “Aerodynamika automobilů v poválečném období: Post-war automotive aerodynamics.” 2019. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/66735.

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

MLA Handbook (7^th Edition):

Šmerda, Ondřej. “Aerodynamika automobilů v poválečném období: Post-war automotive aerodynamics.” 2019. Web. 18 Jan 2021.

Vancouver:

Šmerda O. Aerodynamika automobilů v poválečném období: Post-war automotive aerodynamics. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/66735.

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

Council of Science Editors:

Šmerda O. Aerodynamika automobilů v poválečném období: Post-war automotive aerodynamics. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/66735

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

Brno University of Technology

22. Poláš, Maroš. Experimentální identifikace aerodynamických vlastností vozidla jízdní zkouškou: Experimental identification of aerodynamic characteristics of a vehicle by on-road test.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/66535

► This thesis deals with road loads, coastdown tests and evaluation of measured data. Thesis consists of two main parts: theoretical and computational. The first part… (more)

Subjects/Keywords: aerodynamická odporová sila; vztlaková sila; aerodynamika; dojazdová skúška; Matlab; aerodynamic drag; lift force; aerodynamics; coastdown test; Matlab

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

APA (6^th Edition):

Poláš, M. (2019). Experimentální identifikace aerodynamických vlastností vozidla jízdní zkouškou: Experimental identification of aerodynamic characteristics of a vehicle by on-road test. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/66535

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):

Poláš, Maroš. “Experimentální identifikace aerodynamických vlastností vozidla jízdní zkouškou: Experimental identification of aerodynamic characteristics of a vehicle by on-road test.” 2019. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/66535.

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

MLA Handbook (7^th Edition):

Poláš, Maroš. “Experimentální identifikace aerodynamických vlastností vozidla jízdní zkouškou: Experimental identification of aerodynamic characteristics of a vehicle by on-road test.” 2019. Web. 18 Jan 2021.

Vancouver:

Poláš M. Experimentální identifikace aerodynamických vlastností vozidla jízdní zkouškou: Experimental identification of aerodynamic characteristics of a vehicle by on-road test. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/66535.

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

Council of Science Editors:

Poláš M. Experimentální identifikace aerodynamických vlastností vozidla jízdní zkouškou: Experimental identification of aerodynamic characteristics of a vehicle by on-road test. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/66535

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

Brno University of Technology

23. Tárnok, Gábor. Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/2676

The master's thesis deals with the aerodynamic interaction od two vehicles, modelling in CFD software, how the vehicle behaves in leeward. Advisors/Committee Members: Vančura, Jan (advisor), Blaťák, Ondřej (referee).

Subjects/Keywords: Aerodynamický odpor; aerodynamický tunel; CFD; Fluent; proudění; tlak; Aerodynamic drag; wind tunnel; CFD; Fluent; convection; pressure

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APA (6^th Edition):

Tárnok, G. (2019). Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/2676

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):

Tárnok, Gábor. “Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles.” 2019. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/2676.

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

MLA Handbook (7^th Edition):

Tárnok, Gábor. “Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles.” 2019. Web. 18 Jan 2021.

Vancouver:

Tárnok G. Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/2676.

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

Council of Science Editors:

Tárnok G. Aerodynamická interakce dvou vozidel: Aerodynamic interaction of two vehicles. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/2676

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

University of British Columbia

24. Wacker, Thomas. A preliminary study of configuration effects on the drag of a tractor-trailer combination.

Degree: Master of Applied Science - MASc, Mechanical Engineering, 1985, University of British Columbia

URL: http://hdl.handle.net/2429/25143

► The effect of configuration changes and add-on devices on the drag reduction of a tractor-trailer is studied through wind tunnel tests using two 1/12-scale models.… (more)

Subjects/Keywords: Drag (Aerodynamics); Tractor trailer combinations - Fuel consumption; Aerodynamic load

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APA (6^th Edition):

Wacker, T. (1985). A preliminary study of configuration effects on the drag of a tractor-trailer combination. (Masters Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/25143

Chicago Manual of Style (16^th Edition):

Wacker, Thomas. “A preliminary study of configuration effects on the drag of a tractor-trailer combination.” 1985. Masters Thesis, University of British Columbia. Accessed January 18, 2021. http://hdl.handle.net/2429/25143.

MLA Handbook (7^th Edition):

Wacker, Thomas. “A preliminary study of configuration effects on the drag of a tractor-trailer combination.” 1985. Web. 18 Jan 2021.

Vancouver:

Wacker T. A preliminary study of configuration effects on the drag of a tractor-trailer combination. [Internet] [Masters thesis]. University of British Columbia; 1985. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/2429/25143.

Council of Science Editors:

Wacker T. A preliminary study of configuration effects on the drag of a tractor-trailer combination. [Masters Thesis]. University of British Columbia; 1985. Available from: http://hdl.handle.net/2429/25143

Virginia Tech

25. Freeman, Jacob Andrew. Optimization Under Uncertainty and Total Predictive Uncertainty for a Tractor-Trailer Base-Drag Reduction Device.

Degree: PhD, Aerospace and Ocean Engineering, 2012, Virginia Tech

URL: http://hdl.handle.net/10919/77168

► One key outcome of this research is the design for a 3-D tractor-trailer base-drag reduction device that predicts a 41% reduction in wind-averaged drag coefficient… (more)

▼ One key outcome of this research is the design for a 3-D tractor-trailer base-drag reduction device that predicts a 41% reduction in wind-averaged drag coefficient at 57 mph (92 km/h) and that is relatively insensitive to uncertain wind speed and direction and uncertain deflection angles due to mounting accuracy and static aeroelastic loading; the best commercial device of non-optimized design achieves a 12% reduction at 65 mph. Another important outcome is the process by which the optimized design is obtained. That process includes verification and validation of the flow solver, a less complex but much broader 2-D pathfinder study, and the culminating 3-D aerodynamic shape optimization under uncertainty (OUU) study. To gain confidence in the accuracy and precision of a computational fluid dynamics (CFD) flow solver and its Reynolds-averaged Navier-Stokes (RANS) turbulence models, it is necessary to conduct code verification, solution verification, and model validation. These activities are accomplished using two commercial CFD solvers, Cobalt and RavenCFD, with four turbulence models: Spalart-Allmaras (S-A), S-A with rotation and curvature, Menter shear-stress transport (SST), and Wilcox 1998 k-ω. Model performance is evaluated for three low subsonic 2-D applications: turbulent flat plate, planar jet, and NACA 0012 airfoil at α = 0°. The S-A turbulence model is selected for the 2-D OUU study. In the 2-D study, a tractor-trailer base flap model is developed that includes six design variables with generous constraints; 400 design candidates are evaluated. The design optimization loop includes the effect of uncertain wind speed and direction, and post processing addresses several other uncertain effects on drag prediction. The study compares the efficiency and accuracy of two optimization algorithms, evolutionary algorithm (EA) and dividing rectangles (DIRECT), twelve surrogate models, six sampling methods, and surrogate-based global optimization (SBGO) methods. The DAKOTA optimization and uncertainty quantification framework is used to interface the RANS flow solver, grid generator, and optimization algorithm. The EA is determined to be more efficient in obtaining a design with significantly reduced drag (as opposed to more efficient in finding the true drag minimum), and total predictive uncertainty is estimated as ±11%. While the SBGO methods are more efficient than a traditional optimization algorithm, they are computationally inefficient due to their serial nature, as implemented in DAKOTA. Because the S-A model does well in 2-D but not in 3-D under these conditions, the SST turbulence model is selected for the 3-D OUU study that includes five design variables and evaluates a total of 130 design candidates. Again using the EA, the study propagates aleatory (wind speed and direction) and epistemic (perturbations in flap deflection angle) uncertainty within the optimization loop and post processes several other uncertain effects. For the best 3-D design, total predictive uncertainty is +15/-42%, due largely to using… Advisors/Committee Members: Roy, Christopher John (committeechair), Mason, William H. (committee member), Canfield, Robert A. (committee member), Cummings, Russell M. (committee member).

Subjects/Keywords: aerodynamic shape optimization; optimization under uncertainty; predictive uncertainty; verification and validation; drag reduction; evolutionary algorithm; uncertainty quantification

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

APA (6^th Edition):

Freeman, J. A. (2012). Optimization Under Uncertainty and Total Predictive Uncertainty for a Tractor-Trailer Base-Drag Reduction Device. (Doctoral Dissertation). Virginia Tech. Retrieved from http://hdl.handle.net/10919/77168

Chicago Manual of Style (16^th Edition):

Freeman, Jacob Andrew. “Optimization Under Uncertainty and Total Predictive Uncertainty for a Tractor-Trailer Base-Drag Reduction Device.” 2012. Doctoral Dissertation, Virginia Tech. Accessed January 18, 2021. http://hdl.handle.net/10919/77168.

MLA Handbook (7^th Edition):

Freeman, Jacob Andrew. “Optimization Under Uncertainty and Total Predictive Uncertainty for a Tractor-Trailer Base-Drag Reduction Device.” 2012. Web. 18 Jan 2021.

Vancouver:

Freeman JA. Optimization Under Uncertainty and Total Predictive Uncertainty for a Tractor-Trailer Base-Drag Reduction Device. [Internet] [Doctoral dissertation]. Virginia Tech; 2012. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/10919/77168.

Council of Science Editors:

Freeman JA. Optimization Under Uncertainty and Total Predictive Uncertainty for a Tractor-Trailer Base-Drag Reduction Device. [Doctoral Dissertation]. Virginia Tech; 2012. Available from: http://hdl.handle.net/10919/77168

Delft University of Technology

26. Terra, W. Cyclist Aerodynamic Drag Analysis through Large-Scale PIV.

Degree: 2020, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; urn:NBN:nl:ui:24-uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; 7be5ba28-0699-408f-be0e-3e4c448cb42c ; 10.4233/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; urn:isbn:978-94-6384-179-5 ; urn:NBN:nl:ui:24-uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; http://resolver.tudelft.nl/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c

► The use of large-scale particle image velocimetry (PIV) is proposed for cycling aerodynamic study to advance the general understanding of the flow around the rider… (more)

▼ The use of large-scale particle image velocimetry (PIV) is proposed for cycling aerodynamic study to advance the general understanding of the flow around the rider and the bike, leading to new strategies for cycling aerodynamic drag reduction in the future. The investigation concentrates on the measurement of the wake velocity and its relation to the aerodynamic drag of stationary models in wind tunnels and of transiting models in the field. In the first part of this work, PIV measurements are conducted in a wind tunnel to capture the wake flow topology of a full-scale cyclist model and determine the cyclist aerodynamic drag. In-house built seeding systems are employed to inject Helium-filled soap bubble (HFSB) tracers upstream of an elite time-trial cyclist replica. The obtained flow topology compares well among different experimental repetitions and with literature, demonstrating the robustness of the PIV measurement approach. The aerodynamic drag is obtained by a so-called PIV wake rake approach, which relies on the conservation of momentum in a control volume surrounding the model. Comparison of the PIV wake rake aerodynamic drag against that of a force balance demonstrates that a drag accuracy of the latter below 1% is possible. The PIV wake rake measurements are conducted in a plane downstream of the bike’s rear wheel to avoid shadows and optical blockage. At this distance from the athlete, however, investigation of the separated and reverse flow regions, that are the main driver of the aerodynamic drag, is not possible. In the second part of this dissertation, therefore, robotic volumetric PIV measurements are conducted to retrieve the velocity description close to the cyclist. The near-wake of the cyclist limbs is presented, which somehow resembles that of isolated bluff bodies, such as cylinders, featuring a recirculation region bounded by two shear layers. The size of the recirculation region, however, is not only governed by the width of the limb, but also by the coherent vortical structures emanating from these limbs near the limb junctions (e.g. elbows and knees). Moreover, interaction of the limbs with the wakes of the upstream body parts also plays a role in the local wake properties. In addition to the measurement of the cyclist’s near wake at typical race speed, also the cyclist Reynolds number effects are investigated to understand how to reduce the aerodynamic drag by dedicated skinsuits designs in the future. This is achieved repeating the robotic volumetric PIV measurements in a wide range of freestream velocity. While reductions of the wake width are observed on both lower leg and arm with increasing free-stream velocity, the wake of the upper leg follows an opposite trend increasing in size at higher velocity. These variations of wake width with increasing freestream speed are related to the behaviour of the local drag coefficient, indicating a drag crisis behaviour on both leg and arm. The distribution of the so-called critical velocity upon these body segments is discussed, as… Advisors/Committee Members: Scarano, F., Sciacchitano, A., Delft University of Technology.

Subjects/Keywords: Cycling aerodynamics; aerodynamic drag; large-scale PIV

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APA (6^th Edition):

Terra, W. (2020). Cyclist Aerodynamic Drag Analysis through Large-Scale PIV. (Doctoral Dissertation). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; urn:NBN:nl:ui:24-uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; 7be5ba28-0699-408f-be0e-3e4c448cb42c ; 10.4233/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; urn:isbn:978-94-6384-179-5 ; urn:NBN:nl:ui:24-uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; http://resolver.tudelft.nl/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c

Chicago Manual of Style (16^th Edition):

Terra, W. “Cyclist Aerodynamic Drag Analysis through Large-Scale PIV.” 2020. Doctoral Dissertation, Delft University of Technology. Accessed January 18, 2021. http://resolver.tudelft.nl/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; urn:NBN:nl:ui:24-uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; 7be5ba28-0699-408f-be0e-3e4c448cb42c ; 10.4233/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; urn:isbn:978-94-6384-179-5 ; urn:NBN:nl:ui:24-uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; http://resolver.tudelft.nl/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c.

MLA Handbook (7^th Edition):

Terra, W. “Cyclist Aerodynamic Drag Analysis through Large-Scale PIV.” 2020. Web. 18 Jan 2021.

Vancouver:

Terra W. Cyclist Aerodynamic Drag Analysis through Large-Scale PIV. [Internet] [Doctoral dissertation]. Delft University of Technology; 2020. [cited 2021 Jan 18]. Available from: http://resolver.tudelft.nl/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; urn:NBN:nl:ui:24-uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; 7be5ba28-0699-408f-be0e-3e4c448cb42c ; 10.4233/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; urn:isbn:978-94-6384-179-5 ; urn:NBN:nl:ui:24-uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; http://resolver.tudelft.nl/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c.

Council of Science Editors:

Terra W. Cyclist Aerodynamic Drag Analysis through Large-Scale PIV. [Doctoral Dissertation]. Delft University of Technology; 2020. Available from: http://resolver.tudelft.nl/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; urn:NBN:nl:ui:24-uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; 7be5ba28-0699-408f-be0e-3e4c448cb42c ; 10.4233/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; urn:isbn:978-94-6384-179-5 ; urn:NBN:nl:ui:24-uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c ; http://resolver.tudelft.nl/uuid:7be5ba28-0699-408f-be0e-3e4c448cb42c

Brigham Young University

27. Ayers, James T. Hydrodynamic Drag and Flow Visualization of IsoTruss Lattice Structures.

Degree: MS, 2005, Brigham Young University

URL: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=1251&context=etd

► Hydrodynamic drag testing was conducted for eleven different configurations of IsoTrussÂ® lattice structures. Flow visualization of prototypical IsoTrussÂ® wind towers was also performed using Particle… (more)

▼ Hydrodynamic drag testing was conducted for eleven different configurations of IsoTrussÂ® lattice structures. Flow visualization of prototypical IsoTrussÂ® wind towers was also performed using Particle Image Velocimetry instrumentation. The drag test and flow visualization specimens included 6-node and 8-node configurations, single and double-grid geometries, thick and thin member sizes, smooth and rough surface finishes, a helical-only structure, and a smaller outer diameter test specimen. Three sets of hydrodynamic drag tests were conducted in a closed-circuit water tunnel: 1) orientation drag tests, 2) water velocity drag tests, and 3) height variation drag tests. The orientation drag tests measured the hydrodynamic drag force of the IsoTrussÂ® test specimens at five different orientations with an average water velocity of 1.43 mph (0.64 m/s). The water velocity drag tests measured the maximum drag for each IsoTrussÂ® test specimen at water velocities ranging from 0.0 to an average 1.43 mph (0.64 m/s). Based on the average outer structure diameter of the IsoTrussÂ® specimens, the water velocities corresponded to a Reynolds number range of 7,000 to 80,000. Based on the average member diameter, the corresponding Reynolds number spanned from 600 to 3,000. In addition, the height variation drag tests were performed by vertically extracting the IsoTrussÂ® test specimens from the test section at four different immersed height levels, with a maximum immersed height of 7.22 in (18.1 cm). The height variation testing corresponded to a Froude number range of 0.40 to 0.90. The IsoTrussÂ® specimens exhibited an average lower drag coefficient based on the projected cylindrical area than the smooth circular cylinder data throughout the Reynolds number and Froude number ranges. The drag coefficient based on solid member area showed no correlation when shown as a function of the solidity ratio. However, for the drag coefficient calculated from the solid member projected area, the data for all IsoTrussÂ® test specimens collapsed to a 2nd order polynomial when presented as a function of the Froude number, with an R2 of 0.99. Conversely, no significant relationship was shown when the drag coefficient based on projected cylindrical area was plotted versus the Froude number. The hydrodynamic data was compared to aerodynamic data, and the orientation testing results were identical. The hydrodynamic data differed by an average of 17% compared to the non-dimensional aerodynamic results. The flow visualization research revealed that the velocity returned to 2% of the freestream velocity at 1.24 diameters upstream from the prototypical IsoTrussÂ® wind tower. Likewise, the velocity returned to a maximum 4% of the freestream velocity at 0.94 diameters sidestream of the model IsoTrussÂ® wind tower.

Subjects/Keywords: hydrodynamic drag; solidity ratio; IsoTruss structures; lattice structures; aerodynamic drag; particle image velocimetry; flow visualization; drag coefficient; froude number; Mechanical Engineering

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

APA (6^th Edition):

Ayers, J. T. (2005). Hydrodynamic Drag and Flow Visualization of IsoTruss Lattice Structures. (Masters Thesis). Brigham Young University. Retrieved from https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=1251&context=etd

Chicago Manual of Style (16^th Edition):

Ayers, James T. “Hydrodynamic Drag and Flow Visualization of IsoTruss Lattice Structures.” 2005. Masters Thesis, Brigham Young University. Accessed January 18, 2021. https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=1251&context=etd.

MLA Handbook (7^th Edition):

Ayers, James T. “Hydrodynamic Drag and Flow Visualization of IsoTruss Lattice Structures.” 2005. Web. 18 Jan 2021.

Vancouver:

Ayers JT. Hydrodynamic Drag and Flow Visualization of IsoTruss Lattice Structures. [Internet] [Masters thesis]. Brigham Young University; 2005. [cited 2021 Jan 18]. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=1251&context=etd.

Council of Science Editors:

Ayers JT. Hydrodynamic Drag and Flow Visualization of IsoTruss Lattice Structures. [Masters Thesis]. Brigham Young University; 2005. Available from: https://scholarsarchive.byu.edu/cgi/viewcontent.cgi?article=1251&context=etd

Vilnius Gediminas Technical University

28. Vasiljevas, Artūras. Eksperimentinio akrobatinio lėktuvo skrydžio analizė.

Degree: Master, Transport Engineering, 2013, Vilnius Gediminas Technical University

URL: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130621_150246-07379 ;

►

Baigiamajame magistro darbe nagrinėjamos būsimo eksperimentinio akrobatinio lėktuvo aerodinaminės savybės. Pristatomos tokio pobūdžio sritys (temos), kaip tinkamo sparno profilio parinkimas orlaiviui, reikalingo sparno formos apibrėžimas,… (more)

Subjects/Keywords: Atakos kampas; Maksimali aerodinaminė kokybė; Keliamosios jėgos koeficientas; Pasipriešinimo koeficientas; Lenkimo momentas; Angle of attack; The maximum aerodynamic quality; Lift coefficient; Drag coefficient; Bending moment

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APA (6^th Edition):

Vasiljevas, Artūras. (2013). Eksperimentinio akrobatinio lėktuvo skrydžio analizė. (Masters Thesis). Vilnius Gediminas Technical University. Retrieved from http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130621_150246-07379 ;

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

Vasiljevas, Artūras. “Eksperimentinio akrobatinio lėktuvo skrydžio analizė.” 2013. Masters Thesis, Vilnius Gediminas Technical University. Accessed January 18, 2021. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130621_150246-07379 ;.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

Vasiljevas, Artūras. “Eksperimentinio akrobatinio lėktuvo skrydžio analizė.” 2013. Web. 18 Jan 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

Vasiljevas, Artūras. Eksperimentinio akrobatinio lėktuvo skrydžio analizė. [Internet] [Masters thesis]. Vilnius Gediminas Technical University; 2013. [cited 2021 Jan 18]. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130621_150246-07379 ;.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

Vasiljevas, Artūras. Eksperimentinio akrobatinio lėktuvo skrydžio analizė. [Masters Thesis]. Vilnius Gediminas Technical University; 2013. Available from: http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2013~D_20130621_150246-07379 ;

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

29. Bouillod, Anthony. Positions sur le vélo et performance en cyclisme : Positions on the bicycle and cycling performance.

Degree: Docteur es, Sciences du sport, 2017, Bourgogne Franche-Comté

URL: http://www.theses.fr/2017UBFCD032

► Les études conduites au cours de ce travail de thèse ont montré que l’optimisation de la position du cycliste sur son vélo était un élément… (more)

▼ Les études conduites au cours de ce travail de thèse ont montré que l’optimisation de la position du cycliste sur son vélo était un élément déterminant de la performance. Nos recherches ont porté sur quatre axes principaux : la conception et la validation d’outils de mesure, l’étude de la position aérodynamique, l’étude de la position assise et enfin l’étude de la position danseuse.L’ensemble des résultats obtenus montrent que la capacité de performance du cycliste peut être améliorée en position aérodynamique en augmentant le ratio entre la puissance mécanique (Pméca) et la surface frontale effective (SCx). Le confort représente également un des principaux facteurs de la performance en contre‑la‑montre (CLM) puisqu’il détermine l’aptitude du cycliste à maintenir sa position au cours du temps. Nos travaux montrent une amélioration du confort avec des semelles orthopédiques, chez les cyclistes affectés par une inégalité de longueur des membres inférieurs (ILMI), liée à une réduction des mouvements du bassin. Une correction orthopédique induit également une augmentation du rendement énergétique (+5,7 %). Ainsi, les cyclistes affectés par une ILMI sont recommandés de la compenser avec des semelles orthopédiques individualisées de façon à améliorer leur performance en CLM. Lors d’une étude préliminaire, nous avons également montré la relation entre les mouvements de la tête et le SCx, c’est pourquoi les cyclistes doivent réduire au maximum ces mouvements afin de minimiser leur SCx et ainsi maximiser leur performance. L’évaluation de la position aérodynamique doit être réalisée en conditions réelles de locomotion, que ce soit pour l’évaluation de S ou de SCx. Le développement de nos deux applications est donc un réel atout pour l’évaluation de la traînée aérodynamique (Ra) de manière individualisée dans les prochaines années puisqu’elles rendent le traitement plus accessible aux entraîneurs. Enfin, bien que nous ayons initié une nouvelle méthodologie d’évaluation de la position aérodynamique en associant numérisation 3D et modélisation numérique de la mécanique des fluides, cette méthode serait plutôt recommandée pour l’individualisation de l’équipement.La position assise peut également être optimisée en augmentant l’indice d’efficacité mécanique (IEM) du cycliste, quel que soit le niveau et le sexe. Cette augmentation de l’IEM passe principalement par une diminution de la force résistante (Fres) dans la phase de montée de la pédale. Malgré tout, le cycliste ne doit pas tirer sur la pédale pour générer un couple propulsif car cette stratégie est contre-productive d’un point de vue énergétique. Il serait intéressant d’étendre notre première étude, établie en laboratoire, sur le terrain pour analyser les adaptations biomécaniques du pédalage des cyclistes aux conditions rencontrées sur le terrain. Les différences observées en laboratoire, sur terrain plat et en montée laissent penser que les cyclistes adaptent leur pédalage selon les conditions dans lesquelles ils évoluent.Enfin, les travaux menés sur la position danseuse… Advisors/Committee Members: Grappe, Frédéric (thesis director), Soto-Romero, Georges (thesis director).

Subjects/Keywords: Perfomance; Position; Technologie; Terrain; Cyclisme; Biomécanique; Laboratoire; Traînée aérodynamique; Puissance mécanique; Technique de pédalage; Performance; Position; Technology; Field; Cycling; Biomechanics; Laboratory; Aerodynamic drag; Mechanical power; Pedalling technique; 796.6

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

APA (6^th Edition):

Bouillod, A. (2017). Positions sur le vélo et performance en cyclisme : Positions on the bicycle and cycling performance. (Doctoral Dissertation). Bourgogne Franche-Comté. Retrieved from http://www.theses.fr/2017UBFCD032

Chicago Manual of Style (16^th Edition):

Bouillod, Anthony. “Positions sur le vélo et performance en cyclisme : Positions on the bicycle and cycling performance.” 2017. Doctoral Dissertation, Bourgogne Franche-Comté. Accessed January 18, 2021. http://www.theses.fr/2017UBFCD032.

MLA Handbook (7^th Edition):

Bouillod, Anthony. “Positions sur le vélo et performance en cyclisme : Positions on the bicycle and cycling performance.” 2017. Web. 18 Jan 2021.

Vancouver:

Bouillod A. Positions sur le vélo et performance en cyclisme : Positions on the bicycle and cycling performance. [Internet] [Doctoral dissertation]. Bourgogne Franche-Comté; 2017. [cited 2021 Jan 18]. Available from: http://www.theses.fr/2017UBFCD032.

Council of Science Editors:

Bouillod A. Positions sur le vélo et performance en cyclisme : Positions on the bicycle and cycling performance. [Doctoral Dissertation]. Bourgogne Franche-Comté; 2017. Available from: http://www.theses.fr/2017UBFCD032

Brno University of Technology

30. Vondruš, Jan. Vliv zadní části karoserie na aerodynamickou interakci vozidel: Influence of the rear part of the car body on aerodynamic interaction of vehicles.

Degree: 2020, Brno University of Technology

URL: http://hdl.handle.net/11012/192797

► This diploma thesis is focused on CFD simulation of two platooning DrivAer cars with varying bodyworks. CFD models are made for bodywork variants Estateback, Fastback… (more)

Subjects/Keywords: DrivAer; Estateback; Fastback; Notchback; úplav; interakce; platooning; odpor; aerodynamický koeficient; CFD; DrivAer; Estateback; Fastback; Notchback; wave; interaction; platooning; drag; aerodynamic coefficient; CFD

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

APA (6^th Edition):

Vondruš, J. (2020). Vliv zadní části karoserie na aerodynamickou interakci vozidel: Influence of the rear part of the car body on aerodynamic interaction of vehicles. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/192797

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):

Vondruš, Jan. “Vliv zadní části karoserie na aerodynamickou interakci vozidel: Influence of the rear part of the car body on aerodynamic interaction of vehicles.” 2020. Thesis, Brno University of Technology. Accessed January 18, 2021. http://hdl.handle.net/11012/192797.

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

MLA Handbook (7^th Edition):

Vondruš, Jan. “Vliv zadní části karoserie na aerodynamickou interakci vozidel: Influence of the rear part of the car body on aerodynamic interaction of vehicles.” 2020. Web. 18 Jan 2021.

Vancouver:

Vondruš J. Vliv zadní části karoserie na aerodynamickou interakci vozidel: Influence of the rear part of the car body on aerodynamic interaction of vehicles. [Internet] [Thesis]. Brno University of Technology; 2020. [cited 2021 Jan 18]. Available from: http://hdl.handle.net/11012/192797.

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

Council of Science Editors:

Vondruš J. Vliv zadní části karoserie na aerodynamickou interakci vozidel: Influence of the rear part of the car body on aerodynamic interaction of vehicles. [Thesis]. Brno University of Technology; 2020. Available from: http://hdl.handle.net/11012/192797

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

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Open Access Theses and Dissertations