OS2-5 沙漠環境風洞が発生する脈動風の変動特性(OS2 自然エネルギー,循環型社会における動力エネルギー技術)

概要

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Wind characteristics generated by the wind tunnel named Desert Environment Wind Tunnel, which can generate arbitrary pattern of wind speed variation by changing the angle of pitch of the blower blades, were investigated with both of a hot-wire anemometer and a ultrasonic anemometer. Distributions of the wind velocity components (v,w) in a plane perpendicular to the mainstream (u-direction), whose wind speed varies like a sine wave, were measured downstream at x=1.5m from the exit of wind tunnel nozzle. The experimental results revealed that the flow expands when it accelerates and, in reverse, the flow contracts when slowing down.
社団法人日本機械学会の論文
2007-06-13