Departmental Bulletin Paper キャビティを有する流路を通るニュートン流体の流れの構造に関する研究(流れの可視化およびPIV計測)

藤田, 克志  ,  高橋, 郁也  ,  米村, 建哉  ,  川端, 信義  ,  太田, 貴士

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The flow of fl uid through a rectangular channel with a cavity is a combination of basic fl ows. Inthis paper, the fl ow structure of a Newtonian fl uid through a rectangular channel with a cavity in a low Reynolds number region was examined. We performed fl ow visualization and PIV measurementusing experimental equipment made by us. The swirling flow occurred in the cavity. The fluid inthe cavity fl owed around the central plane of the channel, spiraled, and moved toward the sidewall before fl owing out near the sidewall. The area where the swirling fl ow was generated changed by the Reynolds number. The swirling fl ow was strong around the central plane of the channel; however, it became weak toward the sidewall.
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