| 圆形自由射流冲击任意热流密度平板时的换热分析 |
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| 引用本文： | 赵耀华,马重芳.圆形自由射流冲击任意热流密度平板时的换热分析[J].北京工业大学学报,1989,15(3):7-13. |
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| 作者姓名： | 赵耀华 马重芳 |
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| 作者单位： | 北京工业大学热能工程学系
(赵耀华)，北京工业大学热能工程学系(马重芳) |
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| 摘 要： | 对射流冲击平板时的层流运动给出了速度和温度边界层的综合划分,用积分方法得到了小P_r数下等热流平板和高P_r数下任意热流平板的驻点区流动换热关系式,在部分壁面射流区,利用Mangler变换技巧,得到任意热流平板的换热系数,并以等热流平板作为特例,与精确解和数值解作了比较,都具有较好的一致性。
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| 关 键 词： | 单相自由射流 射流冲击换热 边界层理论分析 |
Analytical Study of Heat Transfer with Single Circular Free Jets under Arbitrary-heat-flux Conditions |
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| Zhao Yaohua Ma Chongfang.Analytical Study of Heat Transfer with Single Circular Free Jets under Arbitrary-heat-flux Conditions[J].Journal of Beijing Polytechnic University,1989,15(3):7-13. |
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| Authors: | Zhao Yaohua Ma Chongfang |
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| Affiliation: | Department of Thermal Engineering |
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| Abstract: | Analytical research was conducted to study heat transfer from horizontal surfaces to normally impinging circular jets under arbitrary-heat-f lux conditions.The thermal and laminar velocity boundary layers were first divided into five regions of flow in a comprehensive method.Approximate expressions of heat transfer coefficient were obtained both for stagnation zone and partial wall jet zone by applying integral techniques and Mangier transition.The analytical results of the constant-heat-flux condition agree with those of both of the exact solution and numerical solution from available literature |
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| Keywords: | single phase free jet jet impingement heat transfer boundary layer theory analysis |
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