| 透平叶顶泄漏能量损失的数值计算 |
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| 引用本文： | 王松涛,冯国泰,王仲奇.透平叶顶泄漏能量损失的数值计算[J].中国航空学报,2004,17(3):142-148. |
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| 作者姓名： | 王松涛 冯国泰 王仲奇 |
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| 作者单位： | School of Energy Engineering，Harbin Institute of Technology，Harbin 150001，China，School of Energy Engineering，Harbin Institute of Technology，Harbin 150001，China，School of Energy Engineering，Harbin Institute of Technology，Harbin 150001，China，School of Energy Engineering，Harbin Institute of Technology，Harbin 150001，China |
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| 基金项目： | NationalNaturalScienceFoundationofChina( 5 0 2 3 60 2 0 )，National 973Project(G19990 2 2 3 0 7) |
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| 摘 要： | 商用N S求解器已经被用于透平动叶顶部空隙的非定常流场的模拟和研究。本文介绍了一种新的用于透平动叶片顶部空隙区域流场计算的能量损失方法 ,可以方便地用于各种流场。发现高黏度效应区域位于上端壁附近而不是在叶片顶部。研究表明对于不同的动叶片其顶部泄流的能量时均损失是不一样的。该结果提供了一个有用的线索 ,可以通过叶片设计者设计出不同几何和空气动力学参数的非统一的动叶片 ,从而减小能量损失
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| 关 键 词： | 叶顶泄漏 间隙 非定常 能量损失 |
Calculation of the Energy Loss for Tip Leakage Flow in Turbines |
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| Mohsen Hassanvand,WANG Song-tao,FENG Guo-tai,WANG Zhong-qi.Calculation of the Energy Loss for Tip Leakage Flow in Turbines[J].Chinese Journal of Aeronautics,2004,17(3):142-148. |
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| Authors: | Mohsen Hassanvand WANG Song-tao FENG Guo-tai WANG Zhong-qi |
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| Abstract: | A commercial N-S solver has been employed for simulation and investigation of the unsteady flow field inside the tip clearance of a turbine rotor. The main objective of this paper is to introduce a new method of energy loss calculation for the flow field in tip clearance region of a turbine rotor blade. This method can be easily used in all kinds of flow fields. Regions of high viscous effects have been found to be located near the shroud rather than the blade tip. It is shown that the time-averaged loss of energy in tip leakage flow is dissimilar for different rotor blades. This result is a helpful hint that can be taken by blade designers to design non-uniform rotor blades with different geometric and aerodynamic loads to minimize the energy loss. |
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| Keywords: | tip leakage flow tip clearance unsteady flow energy loss |
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