教師資料查詢 | 類別: 期刊論文 | 教師: 吳容銘 Wu Jung-ming (瀏覽個人網頁)

標題:3D simulations of hydrodynamic drag forces on two porous spheres moving along their centerline
學年
學期
出版(發表)日期2006/09/01
作品名稱3D simulations of hydrodynamic drag forces on two porous spheres moving along their centerline
作品名稱(其他語言)
著者Wu, R. M.; Lin, M. H.; Lin, H. Y.; Hsu, R. Y.
單位淡江大學化學工程與材料工程學系
出版者Maryland Heights: Academic Press
著錄名稱、卷期、頁數Journal of Colloid and Interface Science 301(1), pp.227-235
摘要This paper numerically evaluates the hydrodynamic drag force exerted on two highly porous spheres moving steadily along their centerline through a quiescent Newtonian fluid over a Reynolds number ranging from 0.1 to 40. At creeping-flow limit, the drag forces exerted on both spheres were approximately identical. At higher Reynolds numbers the drag force on the leading sphere (sphere #1) was higher than the following sphere (sphere #2), revealing the shading effects produced by sphere #1 on sphere #2. At dimensionless diameter β<2 (β=df/2k0.5, df and k are sphere diameter and interior permeability, respectively), the spheres can be regarded as “no-spheres” limit. At increasing β for both spheres, the drag force on sphere #2 was increased because of the more difficult advective flow through its interior, and at the same time the drag was reduced owing to the stronger wake flow produced by the denser sphere #1. The competition between these two effects leads to complicated dependence of drag force on sphere #2 on β value. These effects were minimal when β became low.
關鍵字Porous; Drag force; Centerline; Simulation; 3D
語言英文
ISSN0021-9797;1095-7103
期刊性質國外
收錄於SCI;EI
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式紙本;電子版
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