| 发汗冷却过程中多孔壁面内的局部非热平衡分析 |
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| 引用本文： | 于淼,姜培学.发汗冷却过程中多孔壁面内的局部非热平衡分析[J].工程热物理学报,2007,28(2):286-288. |
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| 作者姓名： | 于淼 姜培学 |
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| 作者单位： | 热科学与动力工程教育部重点实验室,清华大学热能工程系,北京,100084 |
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| 基金项目： | 清华大学校科研和教改项目 |
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| 摘 要： | 本文采用局部非热平衡模型对发汗冷却过程中多孔壁面内的换热和流动进行了数值模拟,分析了影响多孔介质内固体骨架与流体的温度及温差分布的因素,研究了这些因素对发汗冷却过程的影响规律.计算结果表明:增大固体骨架的导热系数、增大冷却剂流速或者加强冷端换热有利于提高发汗冷却效率.
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| 关 键 词： | 发汗冷却 多孔介质 局部非热平衡模型 数值模拟 |
| 文章编号： | 0253-231X(2007)02-0286-03 |
| 修稿时间： | 2006年12月8日 |
INVESTIGATION OF THERMAL NON-EQUILIBRIUM IN POROUS WALL WITH TRANSPIRATION COOLING |
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| YU Miao,JIANG Pei-Xue.INVESTIGATION OF THERMAL NON-EQUILIBRIUM IN POROUS WALL WITH TRANSPIRATION COOLING[J].Journal of Engineering Thermophysics,2007,28(2):286-288. |
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| Authors: | YU Miao JIANG Pei-Xue |
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| Abstract: | Convection heat transfer in porous wall with transpiration cooling was investigated nu- merically using Local Thermal Non-Equilibrium Model.The factors influencing the solid and fluid temperatures and the temperature difference between the solid and fluid phases in porous wall were analyzed,and the effects of these factors on transpiration cooling were investigated.The results showed that increasing solid thermal conductivity and coolant mass flow rate and convection heat transfer in the inlet of coolant can improve the performance of transpiration cooling. |
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| Keywords: | transpiration cooling porous media local thermal non-equilibrium numerical simulation |
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