External Heat Transfer Predictions in a Highly Loaded Transonic Linear Turbine Guide Vane Cascade Using an Upwind Biased Navier–Stokes Solver

[+] Author and Article Information
A. Gehrer, H. Jericha

Institute of Thermal Turbomachinery and Machine Dynamics, Graz University of Technology, Graz, Austria

J. Turbomach 121(3), 525-531 (Jul 01, 1999) (7 pages) doi:10.1115/1.2841347 History: Received February 01, 1998; Online January 29, 2008


External heat transfer predictions are performed for two-dimensional turbine blade cascades. The Reynolds-averaged Navier–Stokes equations with algebraic (Arnone and Pacciani, 1998), one-equation (Spalart and Allmaras, 1994), and two-equation (low-Re k–ε, Biswas and Fukuyama, 1994) turbulence closures are solved with a fully implicit time-marching finite volume method. Comparisons with measurements (Arts et al., 1990; Arts, 1994) for a highly loaded transonic turbine nozzle guide vane cascade show good agreement in some cases, but also reveal problems with transition prediction and turbulence modeling. Special attention has been focused on the low-Re k–ε model concerning the influence of the inlet boundary condition for the ε-equation and problems in the stagnation point region.

Copyright © 1999 by The American Society of Mechanical Engineers
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