侧壁边界条件对平面二维模型流态的影响  

Effects of Side Wall Boundary Conditions on Flow Patterns in a two Dimensional Model Basin

作　　者：廖振华[1] 吴卫[1] 刘桦[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240

出　　处：《力学季刊》2011年第3期315-322,共8页Chinese Quarterly of Mechanics

基　　金：上海市科委重点科技攻关专项(09231203402);上海市重点学科建设项目(B206)

摘　　要：侧壁无滑移、部分滑移与完全滑移三种不同的侧壁边界模拟方法将影响边界约束水域的潮流流态模拟结果。通过平底矩形水池的流场数值模拟,分析了侧壁无滑移与完全滑移两种情况下水池内的流态,讨论了水池入水口附近产生旋涡以及在侧壁无滑移时产生次生旋涡的机理,特别是侧壁部分滑移时不同侧壁粗糙度下水池内产生旋涡及次生旋涡的现象。给出了不同侧壁边界粗糙度下流动分离点的位置以及主旋涡和次生旋涡强度大小的变化。The effects of wall boundary conditions on the flow pattern were studied numerically.The two dimensional shallow water equations were used for the numerical simulation.The grid convergence of the numerical model was considered.The numerical results show that there are significant difference between the flow patterns for the no-slip boundary condition of the walls and the slip boundary condition of the walls.For the case of partial slip boundary condition,the flow patterns for the case of different values of the roughness were discussed.

关 键 词：侧壁边界 潮流 次生旋涡 数值模拟 

分 类 号：TV131.2[水利工程—水力学及河流动力学]