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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2017, Vol. 38 ›› Issue (9): 521019-521019.doi: 10.7527/S1000-6893.2017.621019

• Special Column of Internal Flow and Heat Transfer Technology Development in Aero-engine • Previous Articles     Next Articles

Research progress on turbine blade tip aerodynamics and heat transfer technology for gas turbines

GAO Jie, ZHENG Qun, YUE Guoqiang, DONG Ping, JIANG Yuting   

  1. College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China
  • Received:2016-12-05 Revised:2017-03-25 Online:2017-09-15 Published:2017-04-10
  • Supported by:

    National Natural Science Foundation of China (51406039);Natural Science Foundation of Heilongjiang Province of China (QC2016059)

Abstract:

The turbine blade tip leakage flow has significant influences on aerodynamic losses, heat transfer and even overall efficiency of the turbine, and is thus one of the key factors in deteriorating the turbine aerothermal performance. The flow and heat transfer mechanisms and the aerothermal control of the tip leakage have been a hot and difficult issue in the research on gas turbines. The research progresses on turbine blade tip aerodynamics and heat transfer over the past decade are reviewed in five aspects:blade tip leakage flow mechanism and its influencing factors, tip leakage flow control methods, blade tip heat transfer and cooling mechanism, influencing factors and control methods, blade tip aerothermal optimization, and blade tip clearance variation, blade tip modeling and its control at transient operations. Furthermore, the turbine blade tip leakage flow research methods, including flow and heat transfer tests and numerical methods are briefly summarized. The key trends and future research priorities regarding turbine blade tip aerodynamics and heat transfer are presented.

Key words: turbine, blade tip, tip leakage flow, tip clearance control, tip heat transfer, aerothermal performance

CLC Number: