Aerodynamic and heat transfer design optimization for cooling turbine blade

Kua Hai Yu, Zhu Feng Yue, Xi Yang

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

This paper presents an automated computer aid design optimization program for aerodynamic and heat transfer optimization of 2D internal cooling gas turbine blades. Parametric geometry models were developed with analytic function methods. The suction surface and pressure surface are presented by a series of quintic splines, the leading edge geometry and the trailing edge geometry were represented by circular arc which helps to maintain a smooth geometry connection at the end points of the pressure side and the suction side. Wall thickness functions were defined to get the coolant flow passage profile. A modeling program was developed to create the blade geometry automated without user intervention. Different number cavities blades could be built only by changing the number of rib. Coupled aero-thermal analysis method was used to solve the flow-field and solid-field based on compressible Navier-Stokes equation. The KS function method which transformed the multi-objective problems into single-objective was used for optimization. With the optimization of blade profiles, the total pressure loss, the maximal temperature and the average volume temperature were reduced significantly.

Original languageEnglish
Pages (from-to)310-314
Number of pages5
JournalJisuan Lixue Xuebao/Chinese Journal of Computational Mechanics
Volume27
Issue number2
StatePublished - Apr 2010

Keywords

  • Cooling turbine blade
  • Coupled aero-thermal analysis
  • KS function
  • Multi-objective optimization
  • Parametric design

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