| 带有前缘气膜冷却燃气轮机叶片的气热耦合研究(英文) |
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| 引用本文： | 董平,王强,郭兆元,黄洪雁,冯国泰.带有前缘气膜冷却燃气轮机叶片的气热耦合研究(英文)[J].中国航空学报,2009,22(2):145-152. |
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| 作者姓名： | 董平 王强 郭兆元 黄洪雁 冯国泰 |
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| 作者单位： | School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China |
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| 基金项目： | National Natural Science Foundation of China (50476028, 50576017) |
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| 摘 要： | 使用气热耦合数值计算方法对带有"淋浴喷头"式前缘气膜冷却的C3X燃气轮机叶片进行数值模拟。通过对使用不同湍流模型的计算结果与实验测量值进行对比,使用转捩模型能够比较准确的模拟带有气膜冷却射流的边界层内的流动和传热过程。气膜冷却射流在叶片吸力面上游层流边界层区域内表现出比较明显的三维湍流特性,但在吸力面下游边界层转捩为湍流以后,湍流使得气膜冷却射流与主流燃气掺混过程加速而使其三维流动特性迅速消失;在吸力面由于边界层流动始终为层流状态,冷却射流与主流掺混较缓慢而使其仍能保持较强的三维湍流特性。边界层内由高温燃气与被冷却叶片之间温度差形成的温度梯度有益于增强边界层流动的稳定性。
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| 收稿时间： | 25 February 2008 |
Conjugate Calculation of Gas Turbine Vanes Cooled with Leading Edge Films |
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| Dong Ping,Wang Qiang,Guo Zhaoyuan,Huang Hongyan,Feng Guotai School of Energy Science , Engineering,Harbin Institute of Technology,Harbin ,China.Conjugate Calculation of Gas Turbine Vanes Cooled with Leading Edge Films[J].Chinese Journal of Aeronautics,2009,22(2):145-152. |
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| Authors: | Dong Ping Wang Qiang Guo Zhaoyuan Huang Hongyan Feng Guotai School of Energy Science Engineering Harbin Institute of Technology Harbin China |
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| Institution: | Dong Ping*,Wang Qiang,Guo Zhaoyuan,Huang Hongyan,Feng Guotai School of Energy Science , Engineering,Harbin Institute of Technology,Harbin 150001,China |
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| Abstract: | Conjugate calculation methodology is used to simulate the C3X gas turbine vanes cooled with leading edge films of "shower- head" type. By comparing calculated results of different turbulence models with the measured data, it is clear that calculation with the transition model can better simulate the flow and heat transfer in the boundary layers with leading edge film cooling. In the laminar boundary layers, on the upstream suction side, the film cooling flow presents 3D turbulent characteristics before tran... |
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| Keywords: | gas turbine conjugate calculation leading edge film cooling transition temperature gradient |
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