吹出式三次元煙風洞による三次元物体周りの流れの可視化

概要

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In order to investigate flow field around a 2-D or a 3-D body, a blow-down type smoke wind tunnel with a 500mm×500mm test section was constructed. The range of the wind speed in the test section is 1.5〜25m/s and its distribution is within ±0.8%. The turbulence intensity of the wind flow in the test section is less than 0.2%. These characteristics of the wind flow show that the wind tunnel is suitable for smoke flow tests. Liquid paraffin smoke is generated and sent into the test section by smoke wire method or smoke nozzle method. Five kinds of lighting are applied for clear flow visualization and its good recording. Some photos of wake flow patterns behind several kinds of bodies are shown; for instance, wakes of a circular cylinder, a square bar, tracks with and without wind deflector and so on.
久留米工業大学の論文
1999-12-20