フラクタル状配置されたファン駆動法による乱流生成

吉田 英司; 池田 寛; 神吉 利彰; 小園 茂平

doi:10.14887/kazekosymp.21.0.131.0

PROCEEDINGS OF THE 21st NATIONAL SYMPOSIUM ON WIND ENGINEERING

Session ID : 23

DOI https://doi.org/10.14887/kazekosymp.21.0.131.0

Conference information

Co-host: Japanese Society of Steel Construction, Japanese Society of Civil Engineers, Meteorological Society of Japan, Architectural Institute of Japan, Japan Association for Wind Engineering, The Institute of Electrical Engineers of Japan

Turbulence generation by fractal arrangement of blowing fans

Eiji Yoshida, *Hiroshi Ikeda, Toshiaki Kamiyoshi, Shigehira Ozono

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Keywords: Fractal-generated turbulence, Multi-fan wind tunnel, Homogeneity, Random signal

CONFERENCE PROCEEDINGS FREE ACCESS

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Abstract

The purpose of the present study is to make the Reynolds number of homogeneous turbulence as high as possible using a multi-fan wind tunnel. The wind tunnel has great potentialities to provide fluctuations and various velocity profiles due to the independence of an array of small fans. We applied a number of driving modes with different conditions, such as fractal arrangement of driving fans, and random input signal. The measurements revealed characteristics of the turbulence those modes generated.

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