Aerodynamic Characteristics Optimization of an Axial Turbine Exhaust Hood by Tests Based on an Orthogonal Design Approach PUBLIC ACCESS

[+] Author Affiliations
S. K. Mao, Y. Z. Wei, Y. L. May

Harbin Turbine Works, Harbin, The People’s Republic of China

Paper No. 87-GT-149, pp. V001T01A044; 6 pages
  • ASME 1987 International Gas Turbine Conference and Exhibition
  • Volume 1: Turbomachinery
  • Anaheim, California, USA, May 31–June 4, 1987
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7923-8
  • Copyright © 1987 by ASME


The shape of an axial exhaust hood is characterized by a rather complicated geometry. The aerodynamic characteristics optimization of such a hood involves considerable difficulty. An optimization method of conducting tests based on an orthogonal design approach is presented. Through model tests of a limited number of versions an optimized version can be selected out of several thousand or so versions composed of different values of a few geometrical parameters. By using the method on a group of exhaust hoods consisting of diffusers and volutes, an optimized configuration and several sub-optimized versions are obtained. Evaluation tests of the optimized version and sub-optimized versions have confirmed their superior performance. The present method can likewise be applicable to exhaust hoods of other axial-flow turbomachines.

Copyright © 1987 by ASME
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