Effect of vertical grid variability on a free surface flow model
A previously developed numerical model that solves the incompressible, non‐hydrostatic, Navier–Stokes equations for free surface flow is analysed on a non‐uniform vertical grid. The equations are vertically transformed to the σ‐coordinate system and solved in a fractional step manner in which the pr...
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Published in | International journal for numerical methods in fluids Vol. 54; no. 10; pp. 1173 - 1199 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
Chichester, UK
John Wiley & Sons, Ltd
10.08.2007
Wiley |
Subjects | |
Online Access | Get full text |
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Summary: | A previously developed numerical model that solves the incompressible, non‐hydrostatic, Navier–Stokes equations for free surface flow is analysed on a non‐uniform vertical grid. The equations are vertically transformed to the σ‐coordinate system and solved in a fractional step manner in which the pressure is computed implicitly by correcting the hydrostatic flow field to be divergence free. Numerical consistency, accuracy and efficiency are assessed with analytical methods and numerical experiments for a varying vertical grid discretization. Specific discretizations are proposed that attain greater accuracy and minimize computational effort when compared to a uniform vertical discretization. Published in 2007 by John Wiley & Sons, Ltd. |
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Bibliography: | This article is a U.S. Government work and is in the public domain in the U.S.A. ArticleID:FLD1421 ark:/67375/WNG-GV7Z74QH-G istex:701BE7415BE846C1E739355EC464124F828EADF5 Research Scientist. ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0271-2091 1097-0363 |
DOI: | 10.1002/fld.1421 |