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ID 16609
本文ファイル
別タイトル
Development of a highly accurate numerical method for shallow-water flows with arbitrary boundary shapes
著者
内田 龍彦
キーワード
CIP-CSL2 scheme
line and area averaged values
boundary condition
shallow-water flow
numerical analysis
dam-break problem
NDC
建設工学・土木工学
抄録(英)
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.
掲載誌名
水工学論文集
50巻
開始ページ
799
終了ページ
804
出版年月日
2006-02
出版者
土木学会
ISSN
0916-7374
NCID
言語
日本語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
部局名
工学研究科