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ID 16609
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title alternative
Development of a highly accurate numerical method for shallow-water flows with arbitrary boundary shapes
creator
Uchida, Tatsuhiko
subject
CIP-CSL2 scheme
line and area averaged values
boundary condition
shallow-water flow
numerical analysis
dam-break problem
NDC
Construction. Civil engineering
abstract
A versatile numerical method of flows with complex boundaries is highly needed in many hydraulic practices. This paper presents a new computational approach for shallow water flows with the emphasis on the accurate modeling of complex geometries in the Cartesian coordinate system. Expanding the concept of CIP-CSL2 scheme, the present method simultaneously solves point, line and area averaged values of a computational cell to directly capture the effects of complex boundary shapes and conditions. The method is then tested against the one-dimensional dam-break problem to find good agreement with theoretical results. Further, the applicability of the method is demonstrated for two flows. In one case, hydraulic bores bounce from impermeable walls and in the other case water flows between narrow impermeable walls whose direction is arbitrary, both of which are known to be tough problems.
journal title
水工学論文集
volume
Volume 50
start page
799
end page
804
date of issued
2006-02
publisher
土木学会
issn
0916-7374
ncid
language
jpn
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
author
department
Graduate School of Engineering