| 周期性变截面微通道热沉内流体流动与传热特性 |
| |
| 引用本文： | 夏国栋,徐志波,齐景智.周期性变截面微通道热沉内流体流动与传热特性[J].航空动力学报,2010,25(1):6-10. |
| |
| 作者姓名： | 夏国栋 徐志波 齐景智 |
| |
| 作者单位： | 北京工业大学,环境与能源工程学院,传热强化与过程节能教育部重点实验室,北京,100124 |
| |
| 基金项目： | 国家自然科学基金，北京市教育委员会科技计划重点项目，北京市属高等学校人才强教计划项目，教育部博士点学科专项科研基金 |
| |
| 摘 要： | 以去离子水为冷却工质,对周期性变截面微通道热沉内流体流动与传热特性进行了实验研究.获得了流体流过周期性变截面微通道热沉内的摩擦阻力系数、Nu数、不同热流密度下的加热膜温度、热阻和泵功的关系,并与传统直通道进行比较分析,结果显示周期性变截面微通道热沉由于流体冲击肋侧壁,增加了局部阻力,导致消耗的泵功增加,但换热能力却有了显著的提高,壁面温差减小,具有非常优越的换热性能,能够满足高热流密度微电子器件冷却的需要.
|
| 关 键 词： | 周期性变截面 微通道 传热特性 摩擦阻力系数 |
| 收稿时间： | 2008/12/26 0:00:00 |
| 修稿时间： | 2009/3/23 0:00:00 |
Flow and heat transfer characteristics in a periodical changeable cross-section micro-channel heat sink |
| |
| XIA Guo-dong,XU Zhi-bo and QI Jing-zhi.Flow and heat transfer characteristics in a periodical changeable cross-section micro-channel heat sink[J].Journal of Aerospace Power,2010,25(1):6-10. |
| |
| Authors: | XIA Guo-dong XU Zhi-bo and QI Jing-zhi |
| |
| Institution: | Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China;Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China;Key Laboratory of Enhanced Heat Transfer and Energy Conservation, Ministry of Education, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China |
| |
| Abstract: | This paper conducted an experimental investigation on flow and heat transfer characteristics associated with the forced flow of de-ionized water in a periodical changeable cross-section micro-channel(PCMC) heat sink.The friction factor,Nusselt number,average temperature of heating film and thermal resistance of heat sink under different pump power were obtained.In comparison with traditional micro-channels with constant cross-section,the periodical changeable cross-section micro-channels could produce higher heat transfer coefficients and friction factors. |
| |
| Keywords: | periodical changeable cross-section micro-channel heat transfer friction factor |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
| 点击此处可从《航空动力学报》下载免费的PDF全文 |
|
