A Viscous-Inviscid Interaction Procedure—Part 1: Method for Computing Two-Dimensional Incompressible Separated Channel Flows

[+] 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 Fluids Dynamics Center, Iowa State University, Ames, Iowa

J. Fluids Eng 108(1), 64-70 (Mar 01, 1986) (7 pages) doi:10.1115/1.3242544 History: Received April 24, 1984; Online October 26, 2009


A viscous-inviscid interaction scheme has been developed for computing steady incompressible laminar and turbulent flows in two-dimensional duct expansions. The viscous flow solutions are obtained by solving the boundary-layer equations inversely in a coupled manner by a finite-difference scheme; the inviscid flow is computed by numerically solving the Laplace equation for streamfunction using an ADI finite-difference procedure. The viscous and inviscid solutions are matched iteratively along displacement surfaces. Details of the procedure are presented in the present paper (Part 1), along with example applications to separated flows. The results compare favorably with experimental data. Applications to turbulent flows over a rearward-facing step are described in a companion paper (Part 2).

Copyright © 1986 by ASME
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