IMHE OpenIR  > 山地灾害与地表过程重点实验室
Liu Wei; He Siming; Ouyang Chaojun
Source Publicationactageologicasinica
AbstractTo investigate the movement mechanism of debris flow, a two-dimensional, two-phase, depthintegrated model is introduced. The model uses Mohr-Coulomb plasticity for the solid rheology, and the fluid stress is modeled as a Newtonian fluid. The interaction between solid and liquid phases, which plays a major role in debris flow movement, is assumed to consist of drag and buoyancy forces. The applicability of drag force formulas is discussed. Considering the complex interaction between debris flow and the bed surface, a combined friction boundary condition is imposed on the bottom, and this is also discussed. To solve the complex model equations, a numerical method with second-order accuracy based on the finite volume method is proposed. Several numerical experiments are performed to verify the feasibilities of model and numerical schemes. Numerical results demonstrate that different solid volume fractions substantially affect debris flow movement.
Document Type期刊论文
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Liu Wei,He Siming,Ouyang Chaojun. twodimensionaldynamicssimulationoftwophasedebrisflow[J]. actageologicasinica,2017,091(005):1873.
APA Liu Wei,He Siming,&Ouyang Chaojun.(2017).twodimensionaldynamicssimulationoftwophasedebrisflow.actageologicasinica,091(005),1873.
MLA Liu Wei,et al."twodimensionaldynamicssimulationoftwophasedebrisflow".actageologicasinica 091.005(2017):1873.
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