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:Hydrodynamic Drag on Non-Spherical Floc and Free-Settling Test
學年90
學期1
出版(發表)日期2001/09/01
作品名稱Hydrodynamic Drag on Non-Spherical Floc and Free-Settling Test
作品名稱(其他語言)
著者Wu, R. M.; Lee, D. J.
單位淡江大學化學工程與材料工程學系
出版者I W A Publishing
著錄名稱、卷期、頁數Water research 35(13), pp.3226-3234
摘要This work numerically investigates the hydrodynamic drag force exerted on a porous spheroid floc moving steadily through a quiescent Newtonian fluid over a wide range of the Reynolds number. The flow patterns for a highly porous spheroid moving at an elevated Reynolds number are basically the same as those at a low Reynolds number, which extends the applicable range of a creeping-flow based correlation to the higher Reynolds number regime. The shape effect becomes more prominent as the spheroid becomes more porous. Using the equivalent diameter, defined as the geometric mean diameter of the principal axes, leads to a universal correlation relating to the drag force, aspect ratio, and interior permeability. In addition, free-settling experiments are performed to estimate how the non-spherical shape affects the three sludge samples. The possible errors in data reduction for the free-settling test are attributed to the a/b ratio and the internal permeability. The errors range from 16-34% for a/b = 0.6-2.0.
關鍵字drag;spheroid;porous; numerical;free-settling experiment
語言英文
ISSN0043-1354
期刊性質國外
收錄於SCI;EI;
產學合作
通訊作者
審稿制度
國別英國
公開徵稿
出版型式,電子版,紙本
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