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Prediction of Separation-Induced Transition Using a Correlation-Based Transition Model

[+] Author Affiliations
Roque Corral

Universidad Politécnica de Madrid, Madrid, Spain

Fernando Gisbert

Industria de Turbopropulsores S.A., Madrid, Spain

Paper No. GT2010-23239, pp. 897-908; 12 pages
doi:10.1115/GT2010-23239
From:
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 7: Turbomachinery, Parts A, B, and C
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4402-1 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME

abstract

A correlation-based transition model has been introduced in a RANS solver to improve the prediction of the transition from laminar to turbulent flow regime in low-pressure turbine blades. The model has been validated by comparing the numerical results against experimental data. The transition model correctly predicts the transition process due to the separation of the laminar boundary layer in a wide range of situations, ranging from steady two-dimensional simulations to unsteady multirow three-dimensional simulations with cavities, improving in all cases the sensitivity of the RANS solver to variations in the Reynolds number.

Copyright © 2010 by ASME

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