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Numerical Study of Effects of Mach number on Aerodynamic Performance of Large Enthalpy Drop Stationary Cascade

Authors
  • Shi, Yuwen1
  • Yan, Peigang1
  • Han, Wanjin1
  • 1 Harbin Institute of Technology, School of Energy Science and Engineering, Harbin, 150001, China , Harbin (China)
Type
Published Article
Journal
Journal of Thermal Science
Publisher
Science Press
Publication Date
May 13, 2014
Volume
23
Issue
3
Pages
223–232
Identifiers
DOI: 10.1007/s11630-014-0699-1
Source
Springer Nature
Keywords
License
Yellow

Abstract

Based on the method to change blade loading type along blade height, that is, applying aft-loading at both end zones of cascade while applying fore-loading in the mid zone of cascade, HTC (Harbin Turbine Company) designed a twisted and bowed stationary cascade with low aspect ratio and large enthalpy drop. To verify the aerodynamic performance of such cascade, firstly, low-speed wind tunnel tests were conducted to validate the calculation results of commercial software CFX, and then numerical simulations were made for the aerodynamic performance of the cascade at different Mach numbers. The simulation results show that the large enthalpy drop stationary cascade designed by HTC can offer good aerodynamic performance while keeping its high-load characteristics in the change range of outlet Mach number as stated in this paper.

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