Heat transfer enhancement in microchannel heat sinks with periodic expansion-constriction cross-sections
文献类型：期刊论文
| 作者 | Chai, Lei1,2; Xia, Guodong1; Wang, Liang2; Zhou, Mingzheng1,3; Cui, Zhenzhen1 |
| 刊名 | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
 |
| 出版日期 | 2013-07-01 |
| 卷号 | 62页码:741-751 |
| 关键词 | Expansion-constriction Microchannel Heat transfer Thermal resistance |
| 英文摘要 | The heat transfer enhancement of microchannel heat sinks with periodic expansion-constriction cross-sections is investigated both experimentally and numerically. Each heat sink consists of 10 parallel microchannels with 0.1 mm wide and 0.2 mm deep in constant cross-section segment and each microchannel consists of an array of periodic expansion-constriction cross-sections. Three-dimensional laminar numerical simulations, based on the Navier-Stokes equations and energy equation, are obtained for pressure drop and heat transfer in these microchannel heat sinks under the same experimental conditions. Multi-channel effect, entrance effect, conjugate heat transfer, viscous heating and temperature dependent properties are considered. It is found that the numerical predictions of apparent friction factor and Nusselt number are in good agreement with experimental data. The influences of periodic expansion-constriction cross sections on pressure drop, heat transfer and thermal resistance are discussed, respectively. The effects of the entrance and exit plenum regions and the lateral parts of silicon wafer on fluid flow and heat transfer are discussed. Special attentions are given to analyze the variation of thermal resistance for each term with pumping power, corresponding to three stages of heat release at the substrate of heat sink. (C) 2013 Elsevier Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Thermodynamics ; Engineering, Mechanical ; Mechanics |
| 研究领域[WOS] | Thermodynamics ; Engineering ; Mechanics |
| 关键词[WOS] | LONGITUDINAL FINS ; FLOW ; CHANNEL |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000319085500078 |
| 公开日期 | 2015-12-22 |
| 源URL | [http://ir.etp.ac.cn/handle/311046/98813]  |
| 专题 | 工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI） |
| 作者单位 | 1.Beijing Univ Technol, Coll Environm & Energy Engn, Minist Educ, Key Lab Enhanced Heat Transfer & Energy Conservat, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Engn Thermophys, Beijing, Peoples R China 3.State Nucl Power Technol R&D Ctr, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chai, Lei,Xia, Guodong,Wang, Liang,et al. Heat transfer enhancement in microchannel heat sinks with periodic expansion-constriction cross-sections[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2013,62:741-751. |
| APA | Chai, Lei,Xia, Guodong,Wang, Liang,Zhou, Mingzheng,&Cui, Zhenzhen.(2013).Heat transfer enhancement in microchannel heat sinks with periodic expansion-constriction cross-sections.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,62,741-751. |
| MLA | Chai, Lei,et al."Heat transfer enhancement in microchannel heat sinks with periodic expansion-constriction cross-sections".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 62(2013):741-751. |
入库方式： OAI收割
来源：工程热物理研究所
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