| 开孔率对纵向波纹隔热屏性能影响 |
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| 引用本文： | 刘友宏,崔兴.开孔率对纵向波纹隔热屏性能影响[J].军民两用技术与产品,2016(2). |
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| 作者姓名： | 刘友宏 崔兴 |
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| 作者单位： | 北京航空航天大学 能源与动力工程学院,北京,100191 |
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| 摘 要： | 对加力燃烧室纵向波纹隔热屏进行了三维流/热/固耦合数值模拟,研究了隔热屏开孔率对隔热屏流阻与换热特性的影响规律,得到了次流通道流阻系数、隔热屏热侧壁面气膜冷却效果与对流换热系数以及单位面积冷气用量随开孔率的变化规律.
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| 关 键 词： | 纵向波纹 隔热屏 流阻特性 换热特性 数值模拟 |
Effects of Aperture Ratio on Performance of Longitudinally Corrugated Heat Shield |
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| Abstract: | In order to obtain the effects of aperture ratio on flow resistance and heat transfer characteristics of a longitudinaly corrugated heat shield,a series of 3D numerical simulation with fluid/solid conjugated compute method of heat transfer were conducted. Change laws of flow resistance coefficient of cooling channel,film cooling effect and surface heat transfer coefficient of hot side surface of heat shield have been obtained. |
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| Keywords: | Longitudinaly corrugated Heat shield Flow resistance Heat transfer characteristics Numerical simulation |
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