STUDY ON APPLICABILITY OF MacCormack FINITE DIFFERENCE SCHEME IN GENERALIZED COORDINATE SYSTEM FOR OPEN CHANNEL FLOWS

• LU Fu-lu

  JAPAN SOCIETY OF CIVIL ENGINEERS

• FUJITA Yuichiro

  JAPAN SOCIETY OF CIVIL ENGINEERS

Bibliographic Information

Other Title

• 一般曲線座標系による開水路流れ解析への MacCormack 法の適用性に関する検討
• イッパン キョクセン ザヒョウケイ ニ ヨル カイスイロ ナガレ カイセキ エ ノ MacCormackホウ ノ テキヨウセイ ニ カンスル ケントウ

Abstract

This paper discusses the applicability of a MacCormack finite difference scheme in a generalized coordinate system to flood flows in simplified basin models located in mountainous areas. The calculated results show that among three kinds of combinations of 1-D operators in the MacCormack finite difference scheme employing direction splitting method, the scheme with alternating difference directions is the best to eliminate truncation errors resulting from the fixed direction difference scheme. This scheme can produce almost similar results for different grid systems and can use small artificial viscosity to simulate experimental results stably. The scheme proves to predict well flood flow characteristics in basins with an incised channel or a tributary.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 2000 (649), 61-66, 2000-05-21

  Japan Society of Civil Engineers

Keywords

• generalized coordinate system
• MacCormack scheme
• basin
• numerical grid
• artificial viscosity

Details

• CRID: 1390001205310557952
• NII Article ID: 10004543585
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.2000.649_61
• ISSN: 18827187
• ISSN: 02897806
• NDL BIB ID: 5356608
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I5356608
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/2000/649/2000_649_61/_pdf
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• Abstract License Flag: Disallowed