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A two-dimensional, transient, multi-scale modeling approach is presented forpredicting the magnitude and rate of percolation segregation for binarymixtures of granular material in a rotating drum and conical hopper. The modelutilizes finite element method simulations to determine the bulk-level granularvelocity field, which is then combined with particle-level diffusion andsegregation correlations using the advection-diffusion-segregation equation.The utility of this modelling approach is demonstrated by predictingsegregation patterns in a rotating drum and during the discharge of conicalhoppers with different geometries. The model exhibits good quantitativeaccuracy in predicting DEM and experimental segregation data reported in theliterature for cohesionless granular materials. Moreover, since the numericalapproach does not directly model individual particles, it is expected to scalewell to systems of industrial scale.

Modeling granular material segregation using a combined finite element method and advection-diffusion-segregation equation model