| Numerical analysis of the dynamics of moving vapor bubbles | |
| Christopher, David M. ; Wang, Hao ; Peng, Xiaofeng | |
| 2010-05-11 ; 2010-05-11 | |
| 关键词 | nucleate boiling bubble motion Marangoni flow evaporation TOP JET FLOW WIRES Thermodynamics Engineering, Mechanical Mechanics |
| 中文摘要 | Bubbles have been observed rapidly sweeping along very fine heated wires during subcooled nucleate boiling with jet flows emanating from the tops of the vapor bubbles. This paper analyzes the physical mechanisms driving the bubble and the jet flows from the tops of these moving bubbles. The flows are analyzed by numerically solving the governing equations for the velocity and temperature distributions around the bubble and the heated wire as the bubble moves along the wire. The bubble motion is due to the non-uniform temperature distribution in the liquid and in the wire caused by the bubble as it moves along the wire. The flow is driven by the horizontal Marangoni flow induced by the temperature difference across the bubble which thrusts the bubble forward. Comparisons with experimental observations suggest that the condensation heat transfer at the bubble interface is restricted by non-condensable gases that increases the surface temperature gradient and the resulting Marangoni flow. (c) 2006 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 ; 英语 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD ; OXFORD ; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/25931]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Christopher, David M.,Wang, Hao,Peng, Xiaofeng. Numerical analysis of the dynamics of moving vapor bubbles[J],2010, 2010. |
| APA | Christopher, David M.,Wang, Hao,&Peng, Xiaofeng.(2010).Numerical analysis of the dynamics of moving vapor bubbles.. |
| MLA | Christopher, David M.,et al."Numerical analysis of the dynamics of moving vapor bubbles".(2010). |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论