DEM-CFD analysis of fluidization behavior of Geldart Group A particles using a dynamic adhesion force model

► A coupled DEM-CFD simulation is performed for adhesive particles. ► The spring constant in DEM model significantly affects the fluidization behavior. ► The effect of adhesion force is enhanced with decreasing spring constant. ► A novel dynamic adhesion force model is proposed based on the theoretical analysis. ► The model can express the fluidization behavior using a reduced spring-constant.