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Application of the Turbulent Potential Model to Heat Transfer Predictions on a Turbine Guide Vane

[+] Author Affiliations
Rene Pecnik, Wolfgang Sanz

Graz University of Technology, Graz, Austria

Paper No. GT2006-90365, pp. 1153-1161; 9 pages
doi:10.1115/GT2006-90365
From:
  • ASME Turbo Expo 2006: Power for Land, Sea, and Air
  • Volume 3: Heat Transfer, Parts A and B
  • Barcelona, Spain, May 8–11, 2006
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 0-7918-4238-X | eISBN: 0-7918-3774-2
  • Copyright © 2006 by ASME

abstract

The accurate numerical simulation of the flow through turbomachinery depends on the reliable prediction of laminar to turbulent boundary layer transition phenomena. The aim of this paper is to study the ability of the turbulent potential model to predict those non-equilibrium turbulent flows for several test cases. Within this model turbulent quantities are described by the turbulent scalar and turbulent vector potentials of the turbulent body force — the divergence of the Reynolds stress tensor. For model validation firstly flat plate test cases with different inlet turbulence intensities, zero pressure gradient and non-uniform pressure gradient distributions along the plate were calculated and compared by means of skin friction values measured in the experiments. Finally the model was validated by heat transfer measurement data obtained from a highly loaded transonic turbine guide vane cascade for different operating conditions.

Copyright © 2006 by ASME

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