HIGH-FIDELITY SIMULATIONS OF A LINEAR HPT VANE CASCADE SUBJECT TO VARYING INLET TURBULENCE

Richard Pichler; Richard D Sandberg; Gregory Laskowski; Vittorio Michelassi

Conference Proceedings

HIGH-FIDELITY SIMULATIONS OF A LINEAR HPT VANE CASCADE SUBJECT TO VARYING INLET TURBULENCE

Richard Pichler, Richard D Sandberg, Gregory Laskowski, Vittorio Michelassi

PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2017, VOL 2A | AMER SOC MECHANICAL ENGINEERS | Published : 2017

DOI: 10.1115/GT2017-63079

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Abstract

The effect of inflow turbulence intensity and turbulence length scales have been studied for a linear high-pressure turbine vane cascade at Reis = 590,000 and Mis = 0.93, using highly resolved compressible large-eddy simulations employing the WALE turbulence model. The turbulence intensity was varied between 6% and 20% while values of the turbulence length scales were prescribed between 5% and 20% of axial chord. The analysis focused on characterizing the inlet turbulence and quantifying the effect of the inlet turbulence variations on the vane boundary layers, in particular on the heat flux to the blade. The transition location on the suction side of the vane was found to be highly sensitiv..

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University of Melbourne Researchers

Richard Sandberg Author Mechanical Engineering

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Grants

Awarded by Office of Science of the U.S. Department of Energy

Awarded by Swiss National Supercomputing Centre (CSCS)

Awarded by Australian Research Council

Funding Acknowledgements

This research used resources of the Oak Ridge Leadership Computing Facility at the Oak Ridge National Laboratory, which is supported by the Office of Science of the U.S. Department of Energy under Contract No. DE-AC05-00OR22725. Further, this work was supported by a grant from the Swiss National Supercomputing Centre (CSCS) under project ID S622.