| 涡轮叶栅叶顶间隙冷气掺混数值模拟 |
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| 引用本文： | 杨凯利,邓爱祥,张满利,邱刚,顾忠华,王立斌,张海峰,闫立军. 涡轮叶栅叶顶间隙冷气掺混数值模拟[J]. 汽轮机技术, 2011, 0(4) |
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| 作者姓名： | 杨凯利 邓爱祥 张满利 邱刚 顾忠华 王立斌 张海峰 闫立军 |
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| 作者单位： | 天津大唐国际盘山发电有限责任公司;大唐国际陡河发电厂;哈尔滨工业大学能源科学与工程学院; |
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| 摘 要： | 采用具有三阶精度TVD性质的有限差分格式计算方法,对一具有真实冷气孔形状的涡轮级叶顶间隙冷气掺混流场进行了全三维N-S方程数值模拟,分析了在1%和2%间隙下冷气射流与间隙流动相互作用的运动机理以及冷气射流对间隙和叶栅流场的影响。结果表明,冷气喷射使得泄漏流动速度降低,在小间隙下运动轨迹偏转以及气动参数的变化都非常明显,轮榖表面可以获得低温保护。在大间隙下叶顶表面获得更好的冷却效果。
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| 关 键 词： | 有限差分 自由型曲面 涡轮 间隙 冷气掺混 |
Numerical Simulation for Coolant Mixing on the Tip of Turbine Cascade |
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| YANG Kai-li,DENG Ai-xiang,ZHANG Man-li,QIU Gang,GU Zhong-hua,WANG Li-bin,ZHANG Hai-feng,YAN Li-jun. Numerical Simulation for Coolant Mixing on the Tip of Turbine Cascade[J]. Turbine Technology, 2011, 0(4) |
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| Authors: | YANG Kai-li DENG Ai-xiang ZHANG Man-li QIU Gang GU Zhong-hua WANG Li-bin ZHANG Hai-feng YAN Li-jun |
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| Affiliation: | YANG Kai-li1,DENG Ai-xiang1,ZHANG Man-li3,QIU Gang3,GU Zhong-hua2,WANG Li-bin1,ZHANG Hai-feng1,YAN Li-jun1(1 Tianjin Datang International Panshan Power Generation Company Limited,Tianjin 301900,China,2 School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,3 Datang International Douhe Power Plant,Tangshan 063028,China) |
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| Abstract: | Finite difference scheme with third order precision and TVD property was employed in this paper.Investigation of mechanism of the coolant ejection flow field was performed on the tip of turbine cascade with six cooling holes by three dimensional N-S solver.Interaction between coolant ejection and tip clearance flow was expounded and influence of coolant ejection on the tip clearance flow and temperature distribution was discussed in 1% and 2% blade tip gaps respectively.The results show that the velocity of... |
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| Keywords: | turbine finite difference film-cooling tip gap coolant ejection leakage flow |
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