| 双出口气膜孔冷却效率数值模拟 |
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| 引用本文： | 李广超,张魏,项松,王成军,彭大维.双出口气膜孔冷却效率数值模拟[J].航空动力学报,2010,25(6):1233-1237. |
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| 作者姓名： | 李广超 张魏 项松 王成军 彭大维 |
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| 作者单位： | 沈阳航空工业学院动力与能源工程学院,沈阳,110136 |
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| 摘 要： | 为了优化气膜冷却结构,通过数值模拟研究了一种新型气膜孔(由两个圆柱孔组成的双出口孔)的气膜冷却特性.利用Fluent软件对Navier-Stokes方程进行求解,湍流模型采用两方程Realizablek-ε模型和增强壁面函数处理.圆柱孔射流的冷却效率计算结果和实验数据吻合较好.双出口孔射流冷却效率计算结果表明,双出口孔射流有效地增加了冷气的径向覆盖范围,在吹风比为0.5时,次孔射流起到了减弱主孔出口对旋涡的作用;在吹风比为1.0和2.0时,次孔射流使主孔出口处的对旋涡消失.最高冷却效率对应的吹风比为1.0.双出口孔射流在提高冷却效率的同时,其加工难度较扩张形孔明显降低.
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| 关 键 词： | 航空发动机 涡轮叶片 气膜冷却 冷却效率 数值模拟 |
| 收稿时间： | 5/4/2009 12:00:00 AM |
| 修稿时间： | 2009/10/27 0:00:00 |
Numerical simulation of cooling effectiveness with injection of double-outlet hole |
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| LI Guang-chao,ZHANG Wei,XIANG Song,WANG Cheng-jun and PENG Da-wei.Numerical simulation of cooling effectiveness with injection of double-outlet hole[J].Journal of Aerospace Power,2010,25(6):1233-1237. |
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| Authors: | LI Guang-chao ZHANG Wei XIANG Song WANG Cheng-jun and PENG Da-wei |
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| Institution: | School of Aerodynamics and Energy Engineering,Shenyang Institute of Aeronautical Engineering,Shenyang 110136,China;School of Aerodynamics and Energy Engineering,Shenyang Institute of Aeronautical Engineering,Shenyang 110136,China;School of Aerodynamics and Energy Engineering,Shenyang Institute of Aeronautical Engineering,Shenyang 110136,China;School of Aerodynamics and Energy Engineering,Shenyang Institute of Aeronautical Engineering,Shenyang 110136,China;School of Aerodynamics and Energy Engineering,Shenyang Institute of Aeronautical Engineering,Shenyang 110136,China |
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| Abstract: | |
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| Keywords: | aero-engine turbine blade film cooling cooling effectiveness numerical simulation |
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