3D CFD MODELING OF WATER AND SEDIMENT FLOW IN A HYDROPOWER RESERVOIR  

出　　处：《International Journal of Sediment Research》1999年第1期20-28,共9页国际泥沙研究（英文版）

摘　　要：The flow of water and sediment in Garita hydropower reservoir in Costa Rica were calculated by a 3D CFD model. The model was based on the finite volume method, solving the Navier Stokes equations using the k ε turbulence model. The SIMPLE method was used to calculate the pressure field. The convection diffusion equation for sediment concentration was also solved, using Engelund Hansen's formula for sediment transport as a boundary condition for the bed. Field data of both water velocities and sediment concentrations were collected to verify the CFD model. There was good agreement between the calculated and measured water velocities, independent of variation in calibration parameters. The calculated sediment concentrations also seemed reasonable compared to the field data.The flow of water and sediment in Garita hydropower reservoir in Costa Rica were calculated by a 3D CFD model. The model was based on the finite volume method, solving the Navier Stokes equations using the k ε turbulence model. The SIMPLE method was used to calculate the pressure field. The convection diffusion equation for sediment concentration was also solved, using Engelund Hansen's formula for sediment transport as a boundary condition for the bed. Field data of both water velocities and sediment concentrations were collected to verify the CFD model. There was good agreement between the calculated and measured water velocities, independent of variation in calibration parameters. The calculated sediment concentrations also seemed reasonable compared to the field data.

关 键 词：Computational fluid dynamics Sediment transport HYDROPOWER RESERVOIRS Model verification 

分 类 号：TV697.317,TV131.2[水利工程—水利水电工程]