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Incompressible and anelastic flow simulations on numerically generated gridsIn the numerical simulation of incompressible and anelastic flows, it is necessary to solve an elliptic equation at each time step. When the boundaries of such flows are nonrectangular, it may be advantageous to solve the equations on a new, numerically generated coordinate grid, in which the property of orthogonality has been preserved. Flow equations in general curvilinear coordinates maintaining the conservative form are given for both anelastic models using the momentum equations, and for incompressible models, using the vorticity equation. The general problem of grid-generation in two dimensions is presented, and a quasi-conformal transformation technique is discussed in detail. Some examples of grids generated by this technique are exhibited. Three examples of the flow of a stratified fluid over obstacles are presented, in which the grid-generation permits some new results to be obtained.
Document ID
19880058293
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Sharman, R. D.
(California Univ. Los Angeles, CA, United States)
Keller, T. L.
(California Univ. Los Angeles, CA, United States)
Wurtele, M. G.
(California, University Los Angeles, United States)
Date Acquired
August 13, 2013
Publication Date
May 1, 1988
Publication Information
Publication: Monthly Weather Review
Volume: 116
ISSN: 0027-0644
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
88A45520
Funding Number(s)
CONTRACT_GRANT: NAGW-774
CONTRACT_GRANT: NSG-4024
Distribution Limits
Public
Copyright
Other

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