NUMERICAL COMPUTATION USING QUASI-3D MODEL AND LABORATORY TESTS ON FLOWS IN CURVED-COMPOUND CHANNELS

• IKEDA Syunsuke

  社団法人 土木学会 東京工業大学 工学部土木工学科

• KAWAMURA Kazuhiro

  社団法人 土木学会 日本ヒューレット・パッカード株式会社

• KASUYA Izumi

  社団法人 土木学会 東京工業大学大学院 理工学研究科土木工学専攻

Bibliographic Information

Other Title

• 準3次元浅水流モデルを用いた複断面河道湾曲部流れの解析と実験との比較
• ジュン3ジゲンセンスイリュウ モデル オ モチイタ フクダンメン カドウ ワンキョクブ ナガレ ノ カイセキ ト ジッケン ト ノ ヒカク

Abstract

In curved compound channels, cross-sectional secondary flow is generated by the imbalance of centrifugal force, and horizontal vortices are induced at the junction of a main channel and flood plains by shear instability. Numerical computations using quasi-3D model was performed, and the results were compared with the experiments to know the flow field associated with the secondary flow and the horizontal vortices. As a result, this model was shown to be appropriate to simulate the entire flow field except for the inner junction of the main channel and the flood plains where 3D-turbulence associated with boils is predominant. Based on the results, numerical tests were performed by varying the water depth, the main channel width and the curvature, and their effects on the flow field and the lateral transport of fluid momentum were examined.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 2002 (705), 55-66, 2002-05-21

  Japan Society of Civil Engineers

Keywords

• curved compound channels
• horizontal vortex
• laboratry tests
• quasi-3D model
• secondary flow

Details

• CRID: 1390001205602547456
• NII Article ID: 10008535021
• NII Article ID: 130003801986
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.2002.705_55
• ISSN: 18827187
• ISSN: 02897806
• NDL BIB ID: 6177936
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6177936
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/2002/705/2002_705_55/_pdf
• Data Source:
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  • NDL
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  • CiNii Articles
• Abstract License Flag: Disallowed