Conference Proceedings

Investigation of the accuracy of rans models to predict the flow through a low-pressure turbine

R Pichler, RD Sandberg, V Michelassi, R Bhaskaran

Proceedings of the ASME Turbo Expo | American Society of Mechanical Engineers | Published : 2015

Abstract

© Copyright 2015 by ASME. In the present paper direct numerical simulation data of a low pressure turbine is investigated in light of turbulence modelling. Many compressible turbulence models use Favre average transport equations of the conservative variables and turbulent kinetic energy along with other modelling equation. First a general discussion on the turbulence modelling error propagation prescribed by transport equations is presented, leading to the terms that are considered to be of interest for turbulence model improvement. In order to give turbulence modellers means of validating their models the terms appearing in the Favre averaged momentum equations are presented along pitchwis..

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