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Comparison of numerical upwinding schemes for flows involving steep gradients
Joint Authors
Husni, S. M. F.
Abd Allah, Sulayman A.
Source
The Arabian Journal for Science and Engineering. Section B, Engineering
Issue
Vol. 22, Issue 2B (31 Oct. 1997), pp.205-222, 18 p.
Publisher
King Fahd University of Petroleum and Minerals
Publication Date
1997-10-31
Country of Publication
Saudi Arabia
No. of Pages
18
Main Subjects
Abstract EN
A comparative study is done on six convective schemes used to model flows with steep gradients.
First-order and second-order upwinding, Fromm’s, Johnson & Mackinnon’s, QUICK, and QUICK with transverse curvature term are considered.
The results of the study are tested by the bench-mark problem first introduced by Smith and Hutton, which contains many of the essential features common to practical convection-diffusion problems.
A 40 x 20 staggered grid mesh is used with prescribed stream function values at the boundaries.
The temperature at the inlet boundary is given in terms of a hyperbolic tangent function with a parameter, a, to control the steepness of this function.
Values of 10 and 100 for a are used representing sharp and very sharp transition, respectively.
The exact analytical solution for the case of no diffusion Pe' - is compared with numerical solutions from the six schemes studied.
Two other values of Pe' = 10 and Pe' =500 are investigated in order to demonstrate the effect of diffusion on the two-dimensional steady state convection-diffusion equation.
A grid-refinement analysis is done by considering two other mesh sizes, 20 x 10 and 80 x 40.
Based on a computational cost, accuracy, and error analysis, QUICK with the transverse curvature term is found to be the most efficient scheme for convection dominant problems.
American Psychological Association (APA)
Husni, S. M. F.& Abd Allah, Sulayman A.. 1997. Comparison of numerical upwinding schemes for flows involving steep gradients. The Arabian Journal for Science and Engineering. Section B, Engineering،Vol. 22, no. 2B, pp.205-222.
https://search.emarefa.net/detail/BIM-390233
Modern Language Association (MLA)
Husni, S. M. F.& Abd Allah, Sulayman A.. Comparison of numerical upwinding schemes for flows involving steep gradients. The Arabian Journal for Science and Engineering. Section B, Engineering Vol. 22, no. 2B (Oct. 1997), pp.205-222.
https://search.emarefa.net/detail/BIM-390233
American Medical Association (AMA)
Husni, S. M. F.& Abd Allah, Sulayman A.. Comparison of numerical upwinding schemes for flows involving steep gradients. The Arabian Journal for Science and Engineering. Section B, Engineering. 1997. Vol. 22, no. 2B, pp.205-222.
https://search.emarefa.net/detail/BIM-390233
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 222
Record ID
BIM-390233