涌潮作用下丁坝水力特性的数值模拟研究  

Numerical Simulation of Hydraulic Characteristics around the Spur Dike under the Impact of Tidal Bore

作　　者：何昆 杨元平 陈刚 钱盛杰 张芝永 HE Kun;YANG Yuanping;CHEN Gang;QIAN Shengjie;ZHANG Zhiyong(Zhejiang Institute of Hydraulics&Estuary(Zhejiang Surveying Institute of Estuary and Coast),Hangzhou 310017,Zhejiang,China;Haining Yancang River Dike Management Office,Haining 314400,Zhejiang,China)

机构地区：[1]浙江省水利河口研究院(浙江省海洋规划设计研究院),浙江杭州310017 [2]海宁市盐仓江堤管理所,浙江海宁314400

出　　处：《浙江水利科技》2022年第3期5-10,共6页Zhejiang Hydrotechnics

基　　金：浙江省水利科技项目(RC2052);浙江省公益技术研究计划(GF21E090006);浙江省省属科研院所扶持专项(河口A21014)。

摘　　要：采用RNG k-ε紊流模型并通过VOF算法进行水体自由表面的追踪,对涌潮作用下丁坝的水力特性进行数值模拟。结果表明,涌潮潮头刚到达丁坝时,多表现为波浪特性,经过丁坝后,多表现为水流特性。涌潮作用下,在坝头背潮侧沿涌潮传播方向长度为L、垂直涌潮传播方向长度为1.5L的范围内需要重点防护。RNG k-εmodel and VOF method for tracking free surface of water body are used to simulate flow characteristics around the spur dike under the impact of tidal bore.The results show that when the tide head first reaches the spur dike,it usually appears as a wave,and after the tide head passes through the spur dike,it mostly appears as a flow.Under the action of the tidal bore,key protection is needed within the range of L along the tidal wave propagation direction and 1.5L along the vertical tidal wave propagation direction on the back tide side of the spur dike head.

关 键 词：丁坝 涌潮 数值模拟 RNG k-ε紊流模型 VOF算法 

分 类 号：TV863[水利工程—水利水电工程] TV143