Control of Turbulence in a Multiple-Fan Wind Tunnel Part 2, Simulation of Atmospheric Turbulence Power Spectra

In order to investigate the wind effects on large structures, such as high-rise buildings, long suspension bridges, etc., new-type multiple-fan wind tunnels are being developed in our laboratory In these tunnels, flow turbulence has been actively generated by multiple-fans and oscillating airfoils....

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Bibliographic Details
Published inWind Engineers, JAWE Vol. 1999; no. 78; pp. 3 - 11
Main Authors KIKUGANA, Hironori, NISHI, Akira, MIYAGI, Hironori, Shuyang, CAO, MATSUDA, Yuji
Format Journal Article
LanguageEnglish
Japanese
Published Japan Association for Wind Engineering 31.01.1999
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ISSN0912-1935
1883-8413
DOI10.5359/jawe.1999.3

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Summary:In order to investigate the wind effects on large structures, such as high-rise buildings, long suspension bridges, etc., new-type multiple-fan wind tunnels are being developed in our laboratory In these tunnels, flow turbulence has been actively generated by multiple-fans and oscillating airfoils. Usually, a wide range of power spectrum can be observed in an atmospheric turbulence under neutral conditions. Therefore, the corresponding large-scale turbulence should be reproduced to simulate the atmospheric turbulence in the tunnel. As a result of the experiments, a wide range of power spectra was achieved in the tunnel, and it was shown clearly that these spectra were well fitted to Kolmogorov's law. This means that a wide range of the inertial subrange corresponding to the atmospheric turbulence was observed.
ISSN:0912-1935
1883-8413
DOI:10.5359/jawe.1999.3