A Numerical Study of Laminar 90-Degree Bend Duct Flow With Different Discretization Schemes

[+] Author and Article Information
R. W. Yeo, P. E. Wood, A. N. Hrymak

Department of Chemical Engineering, McMaster University, Hamilton, Ontario, Canada L8S 4L7

J. Fluids Eng 113(4), 563-568 (Dec 01, 1991) (6 pages) doi:10.1115/1.2926515 History: Received October 26, 1989; Online May 23, 2008


Three different discretization schemes were used to study the flow in a 90-degree bend square duct. The numerical method consists of a general curvilinear coordinate formulation of the governing equations and a non-staggered grid for the variables. A stable method of implementing the higher-order schemes is proposed. The second-order upwinding and QUICK schemes give results which compare more favourably with the experimental data than the first-order upwinding method. In 3-D flow problems, the grid-refinement is severely limited by the amount of computer storage and the use of higher-order upwinding schemes provides a better alternative in obtaining accurate flow predictions.

Copyright © 1991 by The American Society of Mechanical Engineers
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