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Discrete Modeling of Fluid-Particle Interaction in Soils

机译:土壤中流固耦合的离散模型

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Fluid-particle interaction contributes to important behaviors of soils.This paper presents a numerical method to model the interaction by coupling the Computational Fluid Dynamics (CFD) with the Discrete Element Method (DEM).The particle motion of the granular system is simulated by the DEM,and the CFD solves the locally averaged Navier-Stokes equation for the flow of pore fluid.The interaction between pore fluid and particles is considered by exchange of interaction forces between DEM and CFD.The numerical method is further benchmarked and validated by several geomechanics problems.
机译:流体-颗粒之间的相互作用有助于土壤的重要行为。本文提出了一种数值方法,通过将计算流体动力学(CFD)与离散元方法(DEM)耦合来对相互作用进行建模。 DEM,CFD求解孔隙流体流动的局部平均Navier-Stokes方程。通过交换DEM和CFD之间的相互作用力来考虑孔隙流体与颗粒之间的相互作用。该数值方法进一步通过一些地质力学进行了基准测试和验证问题。

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