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Computational Techniques and Applications Conference and Workshops - CTAC99
September 20-24, 1999
The Australian National University
Canberra, ACT, Australia

Organizers
Mike Osborne, Bob Gingold, Steve Roberts, David Harrar II, Thanh Tran, Bob Anderssen, Henry Gardner, Markus Hegland, Lutz Grosz

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Higher Order Control-Volume Calculations for Unsteady Natural Convection in Two and Three Dimensional Cavities.
by
Gary Brassington
Department of Civil and Environmental Engineering, James Cook University, Townsville, Australia

Analyses of accuracy and computational cost of finite difference methods in CFD have illustrated a criterion for the minimum order for efficient calculations. This criterion favours the use of higher than second order methods when modelling greater than two space-time dimensions. The implementation of higher order methods is discussed in the context of natural convection in two and three dimensional cavities. The dynamics of the natural convection discussed is dominated and driven by a vertical boundary layer which is impulsively started. Several strategies for the accurate calculation of the boundary layer using higher order methods are demonstrated and compared with second order models.

http://www.jcu.edu.au/~jc117113/PUB/ctac99.html

Date received: July 29, 1999

Copyright © 1999 by the author(s). The author(s) of this document and the organizers of the conference have granted their consent to include this abstract in Atlas Conferences Inc. Document # cadk-64.