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Effect of pulse heating parameters on the microscale bubble dynamics at a microheater surface | |
Xu, Jinliang1; Zhang, Wei1,2 | |
2008 | |
发表期刊 | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER |
ISSN | 0017-9310 |
卷号 | 51期号:1-2页码:389-396 |
通讯作者 | xujl@ms.giec.ac.cn |
摘要 | We study the effects of pulse heating parameters on the micro bubble behavior of a platinum microheater (100 mu m x 20 mu m) immersed in a methanol pool. The experiment covers the heat fluxes of 10-37 MW/m(2) and pulse frequencies of 25-500 Hz. The boiling incipience is initiated at the superheat limit of methanol, corresponding to the homogeneous nucleation. Three types of micro boiling patterns are identified. The first type is named as the bubble explosion and regrowth, consisting of a violent explosive boiling and shrinking, followed by a slower bubble regrowth and subsequent shrinking, occurring at lower heat fluxes. The second type, named as the bubble breakup and attraction, consists of the violent explosive boiling, bubble breakup and emission, bubble attraction and coalescence process, occurring at higher heat fluxes than those of the first type. The third type, named as the bubble size oscillation and large bubble formation, involves the initial explosive boiling, followed by a short periodic bubble growth and shrinking. Then the bubble continues to increase its size, until a constant bubble size is reached which is larger than the microheater length. (C) 2007 Elsevier Ltd. All rights reserved. |
文章类型 | Article |
其他摘要 | We study the effects of pulse heating parameters on the micro bubble behavior of a platinum microheater (100 mu m x 20 mu m) immersed in a methanol pool. The experiment covers the heat fluxes of 10-37 MW/m(2) and pulse frequencies of 25-500 Hz. The boiling incipience is initiated at the superheat limit of methanol, corresponding to the homogeneous nucleation. Three types of micro boiling patterns are identified. The first type is named as the bubble explosion and regrowth, consisting of a violent explosive boiling and shrinking, followed by a slower bubble regrowth and subsequent shrinking, occurring at lower heat fluxes. The second type, named as the bubble breakup and attraction, consists of the violent explosive boiling, bubble breakup and emission, bubble attraction and coalescence process, occurring at higher heat fluxes than those of the first type. The third type, named as the bubble size oscillation and large bubble formation, involves the initial explosive boiling, followed by a short periodic bubble growth and shrinking. Then the bubble continues to increase its size, until a constant bubble size is reached which is larger than the microheater length. |
关键词 | Pulse Heating Parameter Explosive Boiling Bubble Breakup And Emission Bubble Attraction And Coalescence |
WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
DOI | 10.1016/j.ijheatmasstransfer.2007.09.007 |
研究领域[WOS] | Thermodynamics ; Engineering ; Mechanics |
URL | 查看原文 |
关键词[WOS] | NUCLEATION ; GROWTH ; WATER |
收录类别 | SCI |
语种 | 英语 |
WOS类目 | Thermodynamics ; Engineering, Mechanical ; Mechanics |
WOS记录号 | WOS:000252688800037 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.giec.ac.cn/handle/344007/3434 |
专题 | 中国科学院广州能源研究所 |
作者单位 | 1.Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Micro Energy Syst Lab, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.Grad Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
推荐引用方式 GB/T 7714 | Xu, Jinliang,Zhang, Wei. Effect of pulse heating parameters on the microscale bubble dynamics at a microheater surface[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2008,51(1-2):389-396. |
APA | Xu, Jinliang,&Zhang, Wei.(2008).Effect of pulse heating parameters on the microscale bubble dynamics at a microheater surface.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,51(1-2),389-396. |
MLA | Xu, Jinliang,et al."Effect of pulse heating parameters on the microscale bubble dynamics at a microheater surface".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 51.1-2(2008):389-396. |
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