G302 矩形曲り管内の二次流れと進行波の遷移(2)(GS3 可視化,境界層,一般セッション)

柳瀬 眞一郎; 早水 庸隆; 百武 徹; 野田 登志弥; 篠原 龍; 田口 順一; 藤井 怜

doi:10.1299/jsmefed.2007._G302-1_

2007

Session ID : G302

DOI https://doi.org/10.1299/jsmefed.2007._G302-1_

Conference information

G302 Transition of Secondary Flow and Traveling Waves in Rectangular Curved Ducts

Shinitirou YANASE, Yasutaka HAYAMIZU, Toru HYAKUTAKE, Toshiya NODA, Toru SHINOHARA, Junichi TAGUTI, Satoru FUJII

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Keywords: Rectangular Curved Duct, Secondary Flow, Traveling Wave, Critical Dean Number

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Abstract

The secondary flow pattern associated with the transition with increasing flow flux in curved rectangular duct flows were experimentally investigated and compared with numerical simulation. The aspect ratio of the experimental duct cross-section is chosen as 1 and 2. The observation has been performed at 180° and 270° from the inlet. It is found that the critical dean numbers obtained experimentally agree with numerical ones very well. We also obtained a sign of occurrence of traveling wave.

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