The effect of surfactant on the motion of a buoyancy-driven drop at intermediate Reynolds numbers: A numerical approach
文献类型：期刊论文
| 作者 | Li, XJ; Mao, ZS |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2001-08-01 |
| 卷号 | 240期号:1页码:307-322 |
| 关键词 | surfactant mass transfer single drop drop motion stagnant cap model interfacial adsorption numerical simulation |
| ISSN号 | 0021-9797 |
| 其他题名 | J. Colloid Interface Sci. |
| 中文摘要 | A numerical investigation of the flow field inside and around a deformed drop translating in another quiescent liquid contaminated by surfactant soluble in continuous phase but not soluble in dispersed phase is presented in this paper. The finite difference method was used to solve numerically the coupled Navier-Stokes and convective-diffusion equations in a body-fitted orthogonal coordinate system. The present numerical simulation of a two-fluid free-boundary problem was validated by comparison of the simulation results of a drop contaminated by surfactant at creeping flow with the analytical solution and the predicted rise velocity of a bubble contaminated by SDS with experimental data at the moderate Reynolds number. To evaluate the effect of surfactant on the drag coefficient, the steady motion of a drop of the same volume in the pure and contaminated systems was simulated. The behavior of the recirculating wake behind a contaminated drop was also examined and found that it becomes more closely attached to the rear stagnancy of the drop when the surfactant concentration is increase gradually. Finally, the stagnant-cap model was revisited and its defects and limitations were analyzed against numerical simulation. (C) 2001 Academic Press. |
| 英文摘要 | A numerical investigation of the flow field inside and around a deformed drop translating in another quiescent liquid contaminated by surfactant soluble in continuous phase but not soluble in dispersed phase is presented in this paper. The finite difference method was used to solve numerically the coupled Navier-Stokes and convective-diffusion equations in a body-fitted orthogonal coordinate system. The present numerical simulation of a two-fluid free-boundary problem was validated by comparison of the simulation results of a drop contaminated by surfactant at creeping flow with the analytical solution and the predicted rise velocity of a bubble contaminated by SDS with experimental data at the moderate Reynolds number. To evaluate the effect of surfactant on the drag coefficient, the steady motion of a drop of the same volume in the pure and contaminated systems was simulated. The behavior of the recirculating wake behind a contaminated drop was also examined and found that it becomes more closely attached to the rear stagnancy of the drop when the surfactant concentration is increase gradually. Finally, the stagnant-cap model was revisited and its defects and limitations were analyzed against numerical simulation. (C) 2001 Academic Press. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | SPHERICAL BUBBLE ; FLOW PAST ; RETARDATION ; BEHAVIOR ; FILMS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000170111900036 |
| 公开日期 | 2013-11-14 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/5739]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, Inst Chem Met, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, XJ,Mao, ZS. The effect of surfactant on the motion of a buoyancy-driven drop at intermediate Reynolds numbers: A numerical approach[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2001,240(1):307-322. |
| APA | Li, XJ,&Mao, ZS.(2001).The effect of surfactant on the motion of a buoyancy-driven drop at intermediate Reynolds numbers: A numerical approach.JOURNAL OF COLLOID AND INTERFACE SCIENCE,240(1),307-322. |
| MLA | Li, XJ,et al."The effect of surfactant on the motion of a buoyancy-driven drop at intermediate Reynolds numbers: A numerical approach".JOURNAL OF COLLOID AND INTERFACE SCIENCE 240.1(2001):307-322. |
入库方式： OAI收割
来源：过程工程研究所
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