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An iterative implicit DDADI algorithm for solving the Navier-Stokes equationAn algorithm utilizing a first order upwind split flux technique and the diagonally dominant treatment is proposed to be the temporal operator for solving the Navier-Stokes equations. Given the limit of a five point stencil, the right hand side flux derivatives are formulated by several commonly used central and upwind schemes. Their performances are studied through a test case of free vortex convection in a uniform stream. From these results, a superior treatment for evaluating the flux term is proposed and compared with the rest. The application of the proposed algorithm to the full Navier-Stokes equations is demonstrated through a calculation of flow over a backward facing step. Results are compared against the calculation done by using the fourth order central differencing scheme with artificial damping.
Document ID
19920016567
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Chen, S. C.
(NASA Lewis Research Center Cleveland, OH, United States)
Liu, N. S.
(NASA Lewis Research Center Cleveland, OH, United States)
Kim, H. D.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1992
Publication Information
Publication: Computational Fluid Dynamics
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
92N25810
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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