期刊論文
| 學年 | 95 |
|---|---|
| 學期 | 1 |
| 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 | en |
| ISSN | 0021-9797 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 | USA |
| 公開徵稿 | |
| 出版型式 | 紙本 電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/44153 ) |