Numerical modeling of sediment transport based on unsteady and steady flows by incompressible smoothed particle hydrodynamics method  

作　　者：Rasoul Memarzadeh Gholamabbas Barani Mahnaz Ghaeini-Hessaroeyeh 

机构地区：[1]Department of Civil Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman [2]Department of Civil Engineering, Faculty of Engineering, Vali-e-Asr University of Rafsanjan

出　　处：《Journal of Hydrodynamics》2018年第5期928-942,共15页水动力学研究与进展B辑（英文版）

摘　　要：The purpose of the present paper is to introduce a simple two-part multi-phase model for the sediment transport problems based on the incompressible smoothed particle hydrodynamics（ISPH） method. The proposed model simulates the movement of sediment particles in two parts. The sediment particles are classified into three categories, including the motionless particles, moving particles behave like a rigid body, and moving particles with a pseudo fluid behavior. The criterion for the classification of sediment particles is the Bingham rheological model. Verification of the present model is performed by simulation of the dam break waves on movable beds with different conditions and the bed scouring under steady flow condition. Comparison of the present model results, the experimental data and available numerical results show that it has good ability to simulate flow pattern and sediment transport.The purpose of the present paper is to introduce a simple two-part multi-phase model for the sediment transport problems based on the incompressible smoothed particle hydrodynamics（ISPH） method. The proposed model simulates the movement of sediment particles in two parts. The sediment particles are classified into three categories, including the motionless particles, moving particles behave like a rigid body, and moving particles with a pseudo fluid behavior. The criterion for the classification of sediment particles is the Bingham rheological model. Verification of the present model is performed by simulation of the dam break waves on movable beds with different conditions and the bed scouring under steady flow condition. Comparison of the present model results, the experimental data and available numerical results show that it has good ability to simulate flow pattern and sediment transport.

关 键 词：Sediment transport Bingham model dam break incompressible smoothed particle hydrodynamics （ISPH） method steady and unsteady flows two-part multi-phase model 

分 类 号：TV142[水利工程—水力学及河流动力学] O351.2[理学—流体力学]