Sedimentation of a cylindrical particle in a Carreau fluid

doi:10.1016/j.jcis.2005.01.041

淡江大學機構典藏 > 理學院 > 數學學系暨研究所 > 期刊論文 > Item 987654321/41288

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題名:	Sedimentation of a cylindrical particle in a Carreau fluid
作者:	Hsu, Jyh-ping;Shie, Ching-Feng;曾琇瑱;Tseng, Shio-jenn
貢獻者:	淡江大學數學學系
關鍵詞:	Sedimentation;Cylindrical particle;Carreau fluid;Drag coefficient
日期:	2005-06-01
上傳時間:	2010-01-28 07:11:46 (UTC+8)
出版者:	Elsevier
摘要:	The drag coefficient of an isolated, rigid cylindrical particle in a Carreau fluid is evaluated. The result of numerical simulation reveals that, in general, the shear-thinning nature of a Carreau fluid yields a drag coefficient smaller than that for the corresponding Newtonian fluid. Also, the smaller the Reynolds number, the more appreciable the decrease of the drag coefficient as the relaxation time constant of the Carreau fluid increases. The influence of the index parameter of a Carreau fluid on the drag coefficient depends largely on the magnitude of the relaxation time constant and is insensitive to the Reynolds number. Only if the relaxation time constant is sufficiently large is the influence of the index parameter on the drag coefficient significant. If the Reynolds number and/or the relaxation time constant is sufficiently large, the flow field upstream of a particle becomes asymmetric to that downstream. In general, the influence of the index parameter, the relaxation time constant, and the Reynolds number on the flow field follows the order index parameter < relaxation time constant < Reynolds number.
關聯:	Journal of Colloid and Interface Science 286(1), pp.392-399
DOI:	10.1016/j.jcis.2005.01.041
顯示於類別:	[數學學系暨研究所] 期刊論文

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