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Impacts of baffle shape of the ring-wing bridge pier on vertical hydraulic characteristics
Pages: 33-39
Year: Issue:  1
Journal: Hydro-Science and Engineering

Keyword:  ring-wing pierbaffle shapevertical velocityturbulence intensity widthvertical turbulence intensitynumerical simulation;
Abstract: 根据桥墩局部冲刷机理,通过桥墩加装环翼式挡板减小局部冲刷的试验研究,分析了加装环翼式挡板后,水流在桥墩四周的垂向水力特性.试验结果表明:桥墩迎流面中心线的垂向速度在安放挡板位置处有拐点.3种形状的挡板中,形状为A1的挡板的近底垂向流速减小幅度最大,影响水流紊动宽度也最大,同时表层垂向紊动强度、近底垂向紊动强度减小幅度也最大.利用CFD软件进行数值模拟分析发现,与物理模型所得结果相吻合.
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