SPH simulation of selective withdrawal from microcavity
文献类型：期刊论文
| 作者 | Zhou, Guangzheng1; Ge, Wei1; Li, Bo1,2; Li, Xipeng1,2; Wang, Peng1,2; Wang, Junwu1 ; Li, Jinghai1
|
| 刊名 | MICROFLUIDICS AND NANOFLUIDICS
 |
| 出版日期 | 2013-10-01 |
| 卷号 | 15期号:4页码:481-490 |
| 关键词 | Multiphase flow Microcavity Smoothed particle hydrodynamics Selective withdrawal Surface tension Outflow boundary |
| 英文摘要 | The selective withdrawal of weakly compressible fluids is investigated by smoothed particle hydrodynamics (SPH) with a revised model of surface tension. In our model problem, fluid is withdrawn from a two-dimensional microcavity through a narrow outlet above the interface of two immiscible fluids. The outflow boundary is implemented by a particular zone of fluid particles with prescribed velocity, together with the introduction of artificial boundary particles. Based on the average number density of fluid particles, the effective contribution of boundary particles is corrected for the compressible context. It is found that there exists a critical withdrawal rate for each initial interface height, beyond which the lower phase becomes entrained in a thin spout along with the upper phase. Besides, the Froude number with redefinition for this kind of multiphase flow could serve as a criterion of flow behavior. Furthermore, larger surface tension, smaller dynamical viscosity and density of the upper phase all lead to longer threshold time of formation of the spout state, and thus are favorable to the withdrawal of upper phase both in terms of higher efficiency and larger quantity. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Nanoscience & Nanotechnology ; Instruments & Instrumentation ; Physics, Fluids & Plasmas |
| 研究领域[WOS] | Science & Technology - Other Topics ; Instruments & Instrumentation ; Physics |
| 关键词[WOS] | SMOOTHED PARTICLE HYDRODYNAMICS ; LIQUID 2-PHASE FLOW ; FREE-SURFACE FLOWS ; LOW-REYNOLDS-NUMBER ; NUMERICAL-SIMULATION ; SOLID FLOWS ; GAS ; MICROCHANNEL ; MODEL ; DISPLACEMENT |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000324646000005 |
| 公开日期 | 2015-05-27 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/13512]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Guangzheng,Ge, Wei,Li, Bo,et al. SPH simulation of selective withdrawal from microcavity[J]. MICROFLUIDICS AND NANOFLUIDICS,2013,15(4):481-490. |
| APA | Zhou, Guangzheng.,Ge, Wei.,Li, Bo.,Li, Xipeng.,Wang, Peng.,...&Li, Jinghai.(2013).SPH simulation of selective withdrawal from microcavity.MICROFLUIDICS AND NANOFLUIDICS,15(4),481-490. |
| MLA | Zhou, Guangzheng,et al."SPH simulation of selective withdrawal from microcavity".MICROFLUIDICS AND NANOFLUIDICS 15.4(2013):481-490. |
入库方式： OAI收割
来源：过程工程研究所
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