Flow simulation by wind tunnel with computer-controlled multiple fans

This paper presents the simulation of turbulent flow by controlling multiple fans in a two-dimensional wind tunnel. The main purposes of this study are to generate a large turbulence scale and simulate a turbulent flow fitted to specified power spectrum and co-coherence in a low frequency range, bot...

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Bibliographic Details
Published in:Journal of wind engineering and industrial aerodynamics 1999, Vol.83 (1), p.421-429
Main Authors: Kikitsu, Hitomitsu, Kanda, Jun, Iwasaki, Ryoji
Format: Article
Language:English
Subjects:
Co-coherence
Computer control systems
Computer simulation
Fans
Multiple fans
Power spectrum
Surface roughness
Turbulent flow
Two-dimensional wind tunnel
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Summary:This paper presents the simulation of turbulent flow by controlling multiple fans in a two-dimensional wind tunnel. The main purposes of this study are to generate a large turbulence scale and simulate a turbulent flow fitted to specified power spectrum and co-coherence in a low frequency range, both of which are not easily accomplished only by the means of roughness blocks, spires and grids. It was relatively easy to obtain a large turbulence scale by controlling multiple fans numerically. According to the proposed procedure, turbulent characteristics of wind flow were successfully simulated to satisfy a specified condition for the target power spectrum and co-coherence.
ISSN:0167-6105
1872-8197
DOI:10.1016/S0167-6105(99)00090-2