淡江大學機構典藏:Item 987654321/88187
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    题名: Hydrodynamic Drag Force Exerted on a Highly Porous Sphere Moving Towards an Impermeable Plate
    作者: Wu, R. M.;Lee, D. J.
    贡献者: 淡江大學化學工程與材料工程學系
    关键词: Drag;porous;plate;numerical
    日期: 1998-10
    上传时间: 2013-04-13 15:36:23 (UTC+8)
    出版者: Pergamon
    摘要: This study numerically evaluates the hydrodynamic drag force exerted on a porous sphere moving through a Newtonian fluid towards an impermeable flat plate at a Reynolds number ranging from 0.1 to 40. The sphere is assumed to be highly porous, whose interior flow field is modeled by the combined Darcy–Brinkman model. The surrounding fluid flow field is governed by steady-state Navier–Stokes equations. When the floc permeability is rather high, which is common for sludge flocs, no boundary layer separation occurs in the after-sphere region at large Reynolds numbers. The drag force thereby adheres to a Stokes’ law like relationship.
    關聯: Chemical Engineering Science 53(20), pp.3571-3578
    DOI: 10.1016/S0009-2509(98)00172-9
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文

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