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RESEARCH PAPERS

The Simulation of Three-Dimensional Viscous Flow in Turbomachinery Geometries Using a Solution-Adaptive Unstructured Mesh Methodology

[+] Author and Article Information
W. N. Dawes

Whittle Laboratory, Cambridge University, Cambridge, United Kingdom

J. Turbomach 114(3), 528-537 (Jul 01, 1992) (10 pages) doi:10.1115/1.2929176 History: Received February 20, 1991; Online June 09, 2008

Abstract

This paper presents a numerical method for the simulation of flow in turbomachinery blade rows using a solution-adaptive mesh methodology. The fully three-dimensional, compressible, Reynolds-averaged Navier–Stokes equations with k–ε turbulence modeling (and low Reynolds number damping terms) are solved on an unstructured mesh formed from tetrahedral finite volumes. At stages in the solution, mesh refinement is carried out based on flagging cell faces with either a fractional variation of a chosen variable (like Mach number) greater than a given threshold or with a mean value of the chosen variable within a given range. Several solutions are presented, including that for the highly three-dimensional flow associated with the corner stall and secondary flow in a transonic compressor cascade, to demonstrate the potential of the new method.

Copyright © 1992 by The American Society of Mechanical Engineers
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