教師資料查詢 | 類別: 期刊論文 | 教師: 曾琇瑱 Tseng Shio-jenn (瀏覽個人網頁)

標題:Drag force on a rigid spheroidal particle in a cylinder filled with carreau fluid
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學期
出版(發表)日期2005/04/15
作品名稱Drag force on a rigid spheroidal particle in a cylinder filled with carreau fluid
作品名稱(其他語言)
著者Hsu, Jyh-ping; Hsieh, Y. H.; 曾琇瑱; Tseng, Shio-jenn
單位淡江大學數學學系
出版者Elsevier
著錄名稱、卷期、頁數Journal of Colloid and Interface Science 284(2), pp.729-741
摘要The boundary effect on the drag acting on a rigid particle is investigated by considering a spheroid on the axis of a cylinder filled with a Carreau fluid. The result of numerical simulation reveals that the ratio (drag coefficient in Carreau fluid/drag coefficient in Newtonian fluid) has a maximum as the ratio (semiaxis in radial direction/radius of cylinder) varies. The presence of a wall has the effect of enhancing the convective motion in the rear part of a particle, and therefore, the formation of wakes. The influence of the shape of a particle on the drag force acting on it can be decreased either by increasing the shear-thinning effect of the fluid or by increasing the Reynolds number. The Reynolds number at which flow separation occurs is found to increase roughly linearly with the increase in the power-law exponent of the Carreau fluid.
關鍵字Wall effect; Spheroid in cylinder;Drag correction factor;Drag coefficient;Carreau fluid;Flow separation
語言英文
ISSN0021-9797
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國別中華民國
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