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›› 2003, Vol. 20 ›› Issue (2): 155-159.DOI: 10.7523/j.issn.2095-6134.2003.2.004

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Numerical Analysis of One Stage High Pressure Turbine Flow Field Considering the Effect of Cooling Air Mixing

Zhao Xiaolu1, Li Wei1, Luo Jianqiao2   

  1. 1. Institute of Engineering Thermophysics, Chinese Academy of Science, Beijing 100080, China;
    2. 608 Institute of Avational Industry, Zhuzhou 412002, China
  • Received:2002-04-03 Revised:2002-07-15 Online:2003-03-10

Abstract:

Aeroengine is developing to perform higher thrust-weight ratio and lower fuel consumption by means of increasing turbine inlet temperature. The increase of the blade thermal load needs more cooling air to protect the blade's safety. The mass flow of cooling air has arrived to twentypercent of the turbine inlet flow at maximum. The influenceof the cooling air injection will not be neglected in the 3D flow field in high pressure turbine. Based on the parallel solution of multistage 3D Navier-stokes equation, this paper uses a source term model describing the cooling air injection, and the characteristic of the flow field and temperature field in one stage high pressure turbine considering the effect of cooling air mixing was evaluated.

Key words: high pressure turbine stage, 3D flow structure, cooling air mixing

CLC Number: