NUMERICAL MODELING OF COMPOUND CHANNEL FLOWS  

作　　者：Wang De-guan, Cheng Li College of Water Resources and Environmental Engineering, Hohai University, Nanjing 210098, China 

出　　处：《Journal of Hydrodynamics》2002年第4期106-109,共4页水动力学研究与进展B辑（英文版）

摘　　要：A numerical model capable of predicting flow characteristics in a compound channel was established with the 3-D steady continuity and momentum equations along with the transport equations for turbulence kinetic energy and dissipation rate. Closure was achieved with the aid of algebraic relations for turbulent shear stresses. The above equations were discretized with implicit difference approach and solved with a step method along the flow direction. The computational results showing the lateral distribution of vertical average velocities and the latio of total flow in the compound channel agree well with the available experimental data.A numerical model capable of predicting flow characteristics in a compound channel was established with the 3-D steady continuity and momentum equations along with the transport equations for turbulence kinetic energy and dissipation rate. Closure was achieved with the aid of algebraic relations for turbulent shear stresses. The above equations were discretized with implicit difference approach and solved with a step method along the flow direction. The computational results showing the lateral distribution of vertical average velocities and the latio of total flow in the compound channel agree well with the available experimental data.

关 键 词：compound channel flow discharge ratio of channel and floodplain TURBULENCE 

分 类 号：TV133[水利工程—水力学及河流动力学]