| 加速度环境下微槽流动与传热特性 |
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| 引用本文： | 席有民,余建祖,高红霞,谢永奇.加速度环境下微槽流动与传热特性[J].工程热物理学报,2010,31(1). |
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| 作者姓名： | 席有民 余建祖 高红霞 谢永奇 |
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| 作者单位： | 北京航空航天大学航空科学与工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金资助项目(No.50676007) |
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| 摘 要： | 航空电子设备在加速度环境下工作时,采用液体工质进行散热的电子设备的散热性能将受到加速度的影响。本文采用有限体积法对加速度环境下矩形微槽中体积浓度30%的乙二醇水溶液的流动和传热特性进行了系统研究。考察了加速度大小和方向对微槽中流动与传热特性的影响,以及加速度环境对不同微槽结构和工质流量下流动与传热特性的影响。研究表明,与不考虑加速度影响时相比,在开始的瞬间,微槽传热性能大幅降低,流动阻力系数急剧上升,
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| 关 键 词： | 微槽 数值模拟 有限体积法 加速度环境 流动与传热 |
FLOW AND HEAT TRANSFER IN A MICROCHANNEL IN AN ACCELERATION ENVIRONMENT |
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| XI You-Min,YU Jian-Zu,GA Hong-Xia,Xie Yong-Qi.FLOW AND HEAT TRANSFER IN A MICROCHANNEL IN AN ACCELERATION ENVIRONMENT[J].Journal of Engineering Thermophysics,2010,31(1). |
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| Authors: | XI You-Min YU Jian-Zu GA Hong-Xia Xie Yong-Qi |
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| Institution: | School of Aeronautic Science and Technology;Beijing University of Aeronautics and Astronautics;Beijing 100083;China |
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| Abstract: | The heat dissipation performance of avionics is affected in an acceleration environment if the avionics utilize liquid as heat dissipation work media.In an acceleration environment,flow and heat transfer characteristics of ethylene glycol solution of 30%(volume concentration) in a rectangular microchannel are investigated by Finite volume method(FVM).The effect of magnitude and direction of acceleration on flow and heat transfer in the microchannel is studied.The effect of microchannel structure and work li... |
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| Keywords: | microchannel numerical simulation finite volume method acceleration environment flow and heat transfer |
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