Development of a large hi-speed shutter for a practical implementation of fluctuating wind direction tunnel and confirmation of aerodynamic force measurement methods

本研究旨在开发一种可用于大型脉动风向风洞的大型高速百叶窗。该隧道有望能够模拟自然风的脉动风向特性。摩擦制造的百叶窗可以在0.2秒内降低测试段的大面积风速。所研制的百叶窗可应用于大型变风向风洞。此外，一种压力测量方法被证实是有效的，可以消除静压波动的影响，如风向变化的波动风向隧道。

This study was conducted to develop a large high-speed shutter that can be used with a large size fluctuating wind direction tunnel. The tunnel is expected to be able to simulate the fluctuating wind direction characteristics of natural wind. The tribally manufactured shutter could decrease the wind speed within 0.2 second over large area of the test section. The developed shutter is thought to be applied with a large size fluctuating wind direction tunnel. Also a pressure measurement method was confirmed to be effective that can remove the effects of the static pressure fluctuation such as that with wind direction change of fluctuating wind direction tunnel.