Free-surface channel flow around a square cylinder

被引:0
|
作者
Eames, Ian [1 ]
Robinson, Tristan [2 ]
机构
[1] UCL, Torrington Pl, London WC1E 7JE, England
[2] UCL, Dept Civil Environm & Geomat Engn, Gower St, London WC1E 6BT, England
关键词
computational methods; channel flow; wave-structure interactions; FORCE;
D O I
10.1017/jfm.2023.964
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The free-surface channel flow around a square cylinder is analysed, over a wide range of blocking ratios, using three-dimensional simulations. The state of the flow is characterised in terms of the Froude number upstream and downstream of the square cylinder. The simulations confirm the presence of the subcritical and choked states, and provide new insight into the supercritical state and band-gap through an analysis of how the momentum flux varies with Froude number along the channel. The influence of the blocking ratio on the flow state and drag force is analysed and shows the significant rise of drag in the choked regime.
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页数:13
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