年次大会
Online ISSN : 2424-2667
ISSN-L : 2424-2667
セッションID: S053063
会議情報
S053063 回流風洞の性能向上に関する研究 : 基本特性について
関下 信正山本 芳嗣笹尾 博行舟里 忠益
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会議録・要旨集 フリー

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Basic flow characteristics were investigated for a circular wind tunnel with a 3/4 open-type test section. Its characteristics were exceptionally good; the uniformity of mean velocity is ±0.4%, turbulence intensity is 0.16% at the exit of its contraction nozzle and a statics pressure coefficient is 0.001/m along the center line of the test section. Meanwhile, since the final goal of the present research is to investigate the mechanism of pulsation flows generated in the test section, strong pulsation flows were generated and observed by the change of a streamwise distance between the contraction nozzle and the collector, a collector size and an inducement ratio into the collector.
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© 2012 一般社団法人 日本機械学会
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