Numerical Simulation of Fluid Flow in Porous Media Based on SPHAM Method
In order to delve into the seepage phenomena of fluids in porous media,this study integrates smoothed par-ticle hydrodynamics(SPH)with the volume-averaging method,and introduces transitional zone interface treatment,new boundary conditions and density noise handling techniques.Concurrently,the study employs intrinsic averages of physical quantities within the mass and momentum equations,and establishes the SPH-averaged macroscopic(SPHAM)seepage model.This model is utilized to simulate flow in porous media with varying porosities,encompassing U-tube experiments(saturated seepage)and dam-break experiments(unsaturated seepage),with an analysis of the hydraulic characteristics of fluid in porous media.The results demonstrate that in both simulation scenarios,the flow profile aligns well with experimental results and analytical solutions.Furthermore,volume conservation is upheld across different simulation conditions.
SPHporous mediahydrodynamic characteristicsvolume average
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