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Modeling Curvature Effects on Turbulence Transition for Turbomachinery Flows

[+] Author Affiliations
Enrico Rinaldi, Roberto Suarez Raspopov, Piero Colonna, Rene Pecnik

Delft University of Technology, Delft, The Netherlands

Paper No. GT2014-26958, pp. V02BT39A039; 11 pages
doi:10.1115/GT2014-26958
From:
  • ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
  • Volume 2B: Turbomachinery
  • Düsseldorf, Germany, June 16–20, 2014
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4561-5
  • Copyright © 2014 by ASME

abstract

The rotation-curvature correction proposed by Spalart and Shur is implemented in the Display FormulaγRe~θt transition model of Langtry and Menter. The correction term modifies the turbulence production such that it is damped in convex curvatures and enhanced otherwise. The curvature corrected transition model is first validated on a U-shaped channel flow for which experimental data and reference numerical results are available. The improved prediction capability is then assessed on a series of well documented two-dimensional turbomachinery problems. A better agreement with experimental data is observed in the simulation of the transition onset, which leads to an improved estimation of parameters of practical interest such as the heat transfer and pressure coefficient.

Copyright © 2014 by ASME

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