A Viscous-Inviscid Interaction Procedure—Part 2: Application to Turbulent Flow Over a Rearward-Facing Step

[+] Author and Article Information
O. K. Kwon

Allison Gas Turbine Division, General Motors Corporation, Indianapolis, Ind.

R. H. Pletcher

Department of Mechanical Engineering and Computational Fluid Dynamics Center, Iowa State University, Ames, Iowa

J. Fluids Eng 108(1), 71-75 (Mar 01, 1986) (5 pages) doi:10.1115/1.3242546 History: Received April 24, 1984; Online October 26, 2009


The viscous-inviscid interaction numerical procedure described in Part 1 is used to predict steady, two-dimensional turbulent flow over a rearward-facing step. The accuracy of predictions is observed to be quite sensitive to the specification of length scale in the turbulence modeling. The best results are observed when the length scale is specified algebraically downstream of the step using parameters characteristic of the step geometry. Predictions of mean flow quantities and reattachment length are shown to be in generally good agreement with measurements obtained over a range of channel expansion ratios.

Copyright © 1986 by ASME
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