| 过程参数描述的等热流平板间层流对流换热特性 |
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| 引用本文： | 武祥,王良璧,林志敏,宋克伟. 过程参数描述的等热流平板间层流对流换热特性[J]. 甘肃科学学报, 2011, 23(3): 81-86 |
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| 作者姓名： | 武祥 王良璧 林志敏 宋克伟 |
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| 作者单位： | 兰州交通大学机电工程学院,甘肃兰州730070;铁道车辆热工教育部重点实验室,甘肃兰州 730070 |
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| 基金项目： | 国家自然科学基金(50876040) |
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| 摘 要： | 应用对流换热的过程描述对等热流边界条件平行平板间的层流对流换热特性进行了分析.不论是发展段还是充分发展段,壁面上由于速度引起的对流传输作用为0,但速度梯度对壁面法向方向热通量的对流传输有贡献,从而壁面上法向热通量是对流方式传输的;速度梯度作用在入口段较强,随流动的发展而减小,充分发展段该作用为一常数;由于速度梯度的贡献...
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| 关 键 词： | 层流对流换热特性 平行平板 等热流 过程参数描述 |
The Characteristics of Laminar Heat Transfer Between Parallel Planes with Uniform Heat Flux under Process Parameter Description |
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| WU Xiang,WANG Liang-bi,LIN Zhi-min,SONG Ke-wei. The Characteristics of Laminar Heat Transfer Between Parallel Planes with Uniform Heat Flux under Process Parameter Description[J]. Journal of Gansu Sciences, 2011, 23(3): 81-86 |
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| Authors: | WU Xiang WANG Liang-bi LIN Zhi-min SONG Ke-wei |
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| Affiliation: | WU Xiang1,2,WANG Liang-bi1,LIN Zhi-min1,SONG Ke-wei1,2(1.College of Electro-Mechanical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China,2.Key Laboratory of Railway Vehicle Thermal Engineering(Lanzhou Jiaotong University),Ministry of Education,China) |
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| Abstract: | The characteristics of laminar heat transfer between parallel planes with uniform heat flux under process parameter description were discussed.In developing and fully developed regions,on the wall surfaces,although the velocity is zero due to the existence of the velocity gradient in normal direction of the wall and the heat flux along the main flow direction,heat flux normal to the wall surfaces is transported through convection process;in the inlet region the contribution of the velocity gradient is stron... |
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| Keywords: | laminar convection parallel planes uniform heat flux process parameter description |
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