急流条件下模拟自由面紊流的“弹性盖”法  

Elastic-Lid Method to Simulate Turbulence with Free Surface under the Condition of Supercritical Flow

作　　者：许唯临[1] 王韦[1] 廖华胜[1] 杨永全[1] 吴持恭[1] 

机构地区：[1]四川联合大学高速水力学国家重点实验室

出　　处：《四川联合大学学报（工程科学版）》1998年第6期68-71,共4页

摘　　要：文献［１］提出了一种模拟自由面紊流的“弹性盖”法，并实际计算了底部垂向射流流场，其自由面流动性质属缓流。本文研究了在急流条件下“弹性盖”的变形规律，得出了急流条件下只需“弹性盖”变形方向与缓流情况相反即可获得相应的自由面位置的结论，并给出了实际算例。In ref.,the elastic-lid method,a kind of technology to simulate turblent flow with free surface,was advanced,and the flow field of vertical discharge into a shallow water was calculated as an example,where Fr<1.In this paper,the deformation of elastic-lid is studied under the condition of Fr>1.It is concluded that the position of free surface can be obtained under the condition of Fr>1 when the deformation of elastic-lid is in the opposite direction from that of Fr<1.At last,an example is provided.

关 键 词：急流 自由面 紊流 水力学 弹性盖法 

分 类 号：TV131.21[水利工程—水力学及河流动力学] O357.5[理学—流体力学]