| 发动机喷管内流场对流换热系数影响因素的数值分析 |
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| 引用本文： | 王明华,陈劲松.发动机喷管内流场对流换热系数影响因素的数值分析[J].火箭推进,2011,37(3):32-37. |
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| 作者姓名： | 王明华 陈劲松 |
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| 作者单位： | 北京航天发射技术研究所,北京,100076 |
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| 摘 要： | 基于Roe-FDS格式,采用标准κ-e湍流模型对某液氧煤油发动机喷管内部燃气流对喷管内壁的对流传热换热系数进行了数值仿真与研究,分析了网格雷诺数以及恒温壁壁温对喷管内壁对流换热系数的影响.当近壁面网格第一层法向高度为10-3 mm数量级时,仿真结果与工程估算公式的计算结果相吻合.同时,在一定范围内,对流换热系数随来流速...
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| 关 键 词： | 喷管对流换热系数 网格雷诺数 恒温壁 边界层 气动热 |
Numerical analysis of influence factor on convective heat transfer coefficient about nozzle internal flow |
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| WANG Ming-hua,CHEN Jin-song.Numerical analysis of influence factor on convective heat transfer coefficient about nozzle internal flow[J].Journal of Rocket Propulsion,2011,37(3):32-37. |
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| Authors: | WANG Ming-hua CHEN Jin-song |
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| Institution: | (Beijing Institute of Space Launch Technology,Beijing 100076,China) |
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| Abstract: | The convective heat transfer coefficient of nozzle internal flow in a liquid oxygen-kerosene rocket engine is simulated with Roe-FDS computation format and a standard k-ε turbulence model.The effects of mesh Reynolds number and constant wall temperature on the convective heat transfer of nozzle internal flow are analyzed.The simulated result is in good agreement with the result of engineering estimation when the order of magnitude of first near-wall mesh altitude is 10-3 mm.In a given scope,the convective heat transfer coefficient increases with the increase of flow velocity,and the influence of constant wall temperature on the convective heat transfer coefficient is indistinctive. |
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| Keywords: | convective heat transfer coefficient of rocket nozzle mesh Reynolds number constant temperature wall boundary layer aerothermodynamics |
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