Vertical 2D algebraic-stress turbulence model of shallow water flow in σ-coordinates

摘要：

A vertical 2-D numerical model for shallow water flow is developed based on the unsteady Reynolds-averaged Navier-Stokes equations. The equations are solved in the σ -coordinates system with semi-implicit time stepping. The eddy viscosity is calculated using algebraic-stress turbulence model. The boundary conditions at the bed for shallow water models only include the vertical diffusion terms using wall functions. The present model is used to simulate the water flow of 2-D vertical plane through a steep-sided trench. The numerical results are in good agreement with the available experimental data.

关键词： shallow-water flow free surface algebraic-stress turbulence model σ -coordinates

作者: S.M.Wong T.S.Li X.G.Wu Y.M.Shen

作者单位: School of Science and Technology, the Open University of Hong Kong, Hong Kong School of Science and Technology, the Open University of Hong Kong, Hong Kong;Zhejiang Institute of State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 11

会议类型: 国际会议

会议名称: The Fifth International Conference on Fluid Mechanics(第五届国际流体力学会议)

会议地点: 上海

会议语种:英文

在线出版日期: 2007-08-15（万方平台首次上网日期，不代表论文的发表时间）