航空学报 > 2010, Vol. 31 Issue (11): 2130-2138

叶型偏差对涡轮性能影响的非定常数值模拟研究

张伟昊1,2, 邹正平1,2, 李维3, 罗建桥3, 潘尚能3   

  1. 1. 北京航空航天大学 航空发动机气动热力国家科技重点实验室 2. 北京航空航天大学 航空发动机数值仿真研究中心 3. 中国航空动力机械研究所
  • 收稿日期:2009-12-31 修回日期:2010-04-06 出版日期:2010-11-25 发布日期:2010-11-25
  • 通讯作者: 邹正平

Unsteady Numerical Simulation Investigation of Effect of Blade Profile Deviation on Turbine Performance

Zhang Weihao1,2, Zou Zhengping1,2, Li Wei3, Luo Jianqiao3, Pan Shangneng3
  

  1. 1. National Key Laboratory of Science & Technology on Aero-Engine Aero-Thermodynamics, Beijing University of Aeronautics and Astronautics, 2. Aeroengine Numerical Simulation Research Center, Beijing University of Aeronautics and Astronautics3. Chinese Aviation Powerplant Research Institute
  • Received:2009-12-31 Revised:2010-04-06 Online:2010-11-25 Published:2010-11-25
  • Contact: Zou Zhengping

摘要: 叶型的加工和装配误差难以避免,这将对涡轮的气动性能产生一定的影响。采用定常和非定常数值模拟结合整机实验的方法,研究了叶型偏差对涡轮气动性能及内部非定常流动细节的影响,并比较了定常和非定常计算结果的差别。研究结果表明:在整个工作范围内,叶型偏差都会造成涡轮性能的明显下降,通道涡和泄漏流的发展、前缘吸力峰的强度、激波的形态和强度等流动结构以及叶排间的非定常相互作用都会随叶型的变化而显著改变,而非定常数值模拟对涡轮气动性能和流动结构受叶型偏差影响的捕捉更为准确。

关键词: 叶型偏差, 涡轮, 气动性能, 数值模拟, 非定常

Abstract: Turbine profile deviation can hardly be avoided in manufacturing practice, which may affect the behavior of the turbine. To investigate the effect of profile deviation on turbine performance and on details of the flow field, steady and unsteady numerical simulations of a turbine in combination with experiments on a complete engine are carried out and the numerical simulation results are also comprehensively compared. The findings indicate that profile deviation can weaken turbine performance considerably in the whole operating range. It also shows that the unsteady interaction between the blade rows and the structures of the flow field, such as the development of passage vortex and tip leakage flow, the intensity of the leading edge suction spike and the shape and intensity of shock waves, would all alter a great deal as the profile changes. In addition, the results demonstrate that unsteady numerical simulation can capture these influences more precisely.

Key words: profile deviation, turbine, aerodynamic performance, numerical simulation, unsteady

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