淡江大學機構典藏:Item 987654321/41288
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/41288


    Title: Sedimentation of a cylindrical particle in a Carreau fluid
    Authors: Hsu, Jyh-ping;Shie, Ching-Feng;曾琇瑱;Tseng, Shio-jenn
    Contributors: 淡江大學數學學系
    Keywords: Sedimentation;Cylindrical particle;Carreau fluid;Drag coefficient
    Date: 2005-06-01
    Issue Date: 2010-01-28 07:11:46 (UTC+8)
    Publisher: Elsevier
    Abstract: 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.
    Relation: Journal of Colloid and Interface Science 286(1), pp.392-399
    DOI: 10.1016/j.jcis.2005.01.041
    Appears in Collections:[Department of Applied Mathematics and Data Science] Journal Article

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