Journal article
Large Eddy Simulation and RANS Analysis of the End-Wall Flow in a Linear Low-Pressure-Turbine Cascade-Part II: Loss Generation
Michele Marconcini, Roberto Pacciani, Andrea Arnone, Vittorio Michelassi, Richard Pichler, Yaomin Zhao, Richard Sandberg
Journal of Turbomachinery | American Society of Mechanical Engineers | Published : 2019
DOI: 10.1115/1.4042208
Abstract
In low-pressure turbines (LPT) at design point, around 60–70% of losses are generated in the blade boundary layers far from end walls, while the remaining 30–40% is controlled by the interaction of the blade profile with the end-wall boundary layer. Increasing attention is devoted to these flow regions in industrial design processes. This paper discusses the end-wall flow characteristics of the T106 profile with parallel end walls at realistic LPT conditions, as described in the experimental setup of Duden, A., and Fottner, L., 1997, “Influence of Taper, Reynolds Number and Mach Number on the Secondary Flow Field of a Highly Loaded Turbine Cascade,” Proc. Inst. Mech. Eng., Part A, 211(4), pp..
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Awarded by Australian Research Council
Funding Acknowledgements
The authors gratefully acknowledge Baker Hughes, a GE Company for granting the permission to publish this paper. The compute time for the LES has been provided by the Pawsey Supercomputing center in Perth, Australia, and the Swiss national supercomputing center CSCS in Lugano, Switzerland. The work in the University of Melbourne was conducted under a GE research grant.