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CFD Simulations of the New University of Sydney Boundary Layer Wind Tunnel
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences.
2012 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

Using Computational Fluid Dynamics Simulations, the flow in the new University of Sydney closed circuit wind tunnel has been analyzed prior to the construction of the tunnel. The objective was to obtain a uniform flow in the test section of the wind tunnel while keeping the pressure losses over the tunnel as low as possible. This was achieved by using several flow-improving components such as guide vanes, screens, a honeycomb and a settling chamber. The guide vanes were used in the corners and in the diverging part leading into the settling chamber, giving a significant improvement of the flow as they prevent it from taking undesired paths. The settling chamber is used to decelerate the flow before it is accelerated when leaving the settling chamber, a process which reduces the turbulence in the flow. Screens were used in the settling chamber to further improve the flow by imposing a pressure drop which evens out differences in the flow speed and reduces the turbulence. The honeycomb, which is situated in the end of the settling chamber, makes the flow more uniform by forcing it to go in only one direction. A uniform flow was obtained using three screens and one honeycomb together with the guide vanes and the settling chamber.

Place, publisher, year, edition, pages
2012. , 31 p.
TVE, 11 038
Keyword [en]
Computational fluid dynamics, CFD, fluid mechanics, wind tunnel, settling chamber, guide vanes, mesh, closed-circuit wind tunnel
National Category
Other Engineering and Technologies not elsewhere specified
URN: urn:nbn:se:uu:diva-166945OAI: diva2:479166
External cooperation
University of Sydney - School of civil engineering
Educational program
Master Programme in Engineering Physics
Available from: 2012-02-17 Created: 2012-01-17 Last updated: 2012-02-17Bibliographically approved

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