World Environmental and Water Resources Congress 2020
Momentum Interpolation Corrections
Publication: World Environmental and Water Resources Congress 2020: Hydraulics, Waterways, and Water Distribution Systems Analysis
ABSTRACT
Since Rhie and Chow’s momentum interpolation was proposed, it has been widely used on collocated meshes. Improvements and correction methods for the momentum interpolation have been developed as well to resolve its dependency problem on the relaxation parameter, on the time step, and instability problem for flows with discontinuities. In this study, the momentum interpolation is assumed not only at each edge between two neighboring cells but also around each edge and its associated neighboring edges. The difference between the momentum interpolation at the edge and around the edge, defined as the so-called interpolation correction, is used to correct the velocity and flux across the edge. According to the demonstrations of examples, in general the proposed interpolation correction method is able to accelerate the convergence process, especially on meshes with non-uniformities and irregularities.
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ACKNOWLEDGEMENT
This work is a part of research sponsored by the USDA Agriculture Research Service under Specific Research Agreement No. 6060-13000-025-00D (monitored by the USDA-ARS National Sedimentation Laboratory) and The University of Mississippi.
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Information & Authors
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Published In
World Environmental and Water Resources Congress 2020: Hydraulics, Waterways, and Water Distribution Systems Analysis
Pages: 137 - 143
Editors: Sajjad Ahmad, Ph.D., and Regan Murray, Ph.D.
ISBN (Online): 978-0-7844-8297-1
Copyright
© 2020 American Society of Civil Engineers.
History
Published online: May 14, 2020
Published in print: May 14, 2020
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