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Absorbing boundary technique for open channel flows
Author(s) -
Yost Scott A.,
Rao Prasada,
Brown Russell M.
Publication year - 2000
Publication title -
international journal for numerical methods in fluids
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 112
eISSN - 1097-0363
pISSN - 0271-2091
DOI - 10.1002/1097-0363(20000715)33:5<641::aid-fld21>3.0.co;2-y
Subject(s) - boundary (topology) , flow (mathematics) , boundary value problem , open channel flow , domain (mathematical analysis) , channel (broadcasting) , computational fluid dynamics , mathematics , mathematical analysis , mechanics , geometry , computer science , physics , telecommunications
An absorbing boundary condition is formulated and applied to the one‐dimensional open channel flow equations in conjunction with an explicit MacCormack scheme. The physical flow domain has been truncated by introducing an artificial pseudo‐boundary. By using an appropriate boundary condition on a truncated domain, it is shown that, for flow containing shocks, the solution can be accelerated to its stationary profile with no loss of accuracy. Copyright © 2000 John Wiley & Sons, Ltd.