Volume 31 Issue 11
Nov.  2016
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Article Navigation >  Journal of Aerospace Power  > 2016  >  31(11): 2757-2764
XIANG Hong-hui, GE Ning, HOU Min-jie, MA Chang-you, YANG Rong-fei, YANG Yong. Performance contrast experiment of prototype single cascade and redesign tandem cascade at high inlet Mach number[J]. Journal of Aerospace Power, 2016, 31(11): 2757-2764. doi: 10.13224/j.cnki.jasp.2016.11.026
Citation: XIANG Hong-hui, GE Ning, HOU Min-jie, MA Chang-you, YANG Rong-fei, YANG Yong. Performance contrast experiment of prototype single cascade and redesign tandem cascade at high inlet Mach number[J]. Journal of Aerospace Power, 2016, 31(11): 2757-2764. doi: 10.13224/j.cnki.jasp.2016.11.026
shu

Performance contrast experiment of prototype single cascade and redesign tandem cascade at high inlet Mach number

doi: 10.13224/j.cnki.jasp.2016.11.026

  • 1. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;

  • 2. Key Laboratory on Aero-engine Altitude Simulation Technology, China Gas Turbine Establishment, Aero Engine(Group) Corporation of China, Jiangyou Sichuan 621703;

  • 3. Department of Flight Technology, Civil Aviation Flight University of China, Guanghan Sichuan 618307, China

  • Received Date: 2016-01-25
  • Publish Date: 2016-11-28
    Abstract
  • Based on the redesign requirement of stator blade with high critical inlet Mach number of a highly-loaded axial flow fan, the performance contrast experiment of prototype single cascade and redesign tandem cascade was presented. The improvement effect of tandem cascade at high inlet Mach number was also evaluated by analyzing the internal flow field parameters of both types of cascade.Results show that the tandem cascade has significant advantages in reducing flow loss and increasing compression capacity than the single cascade. Compared with the single cascade, the total pressure loss coefficient and the static pressure ratio of the tandem cascade reduced by 19% and enhanced by 3.1%, respectively. Accordingly, the flow blockage phenomena of the single cascade at original design condition are eased basically. The front blade can restrain the boundary layer development on suction surface of the rear blade of the tandem cascade, thus the rear blade has good operating performance.

     

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