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TECHNICAL BRIEF

Numerical Evaluation of Contemporary Low-Speed Wind Tunnel Contraction Designs

[+] Author and Article Information
Con J. Doolan

School of Mechanical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia

J. Fluids Eng 129(9), 1241-1244 (May 31, 2007) (4 pages) doi:10.1115/1.2771578 History: Received November 28, 2006; Revised May 31, 2007

A potential flow and viscous flow solver have been coupled to produce a robust computational tool useful for the design of low-speed wind tunnel contractions. After validation against published numerical and experimental wind tunnel data, the method is used to evaluate recently proposed contraction shapes from the literature. The results show that, on balance, a fifth-order polynomial provides a good design solution. Newly proposed shapes will either improve available flow area at the expense of contraction outlet flow uniformity or vice versa.

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Copyright © 2007 by American Society of Mechanical Engineers
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Grahic Jump Location
Figure 2

Contemporary contraction shapes investigated in this study: (a) Modified fifth-order polynomial with f(ξ)=0.3−1.0; (b) modified fifth-order polynomial with f(ξ)=1.0, f(ξ)=x∕L, f(ξ)=(x∕L)2, f(ξ)=(x∕L)3; and (c) fifth-order polynomial (f(ξ)=1.0), MTL, and UTAS

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