restitution coefficient ofr fluidized bed

T.Hariharanath

Iam working in GAS/SOLID flow in fluidized bed, iam using kinetic theory of ganular flow,in this method we have to give two different restitution coefficients for particle-particle interactions,and particle -wall interactions.The software fluent is asking only for particle-particle interactions,then how can give to the software the resititution coefficient for particle-wall interactions.

IF i want to plot the time averaged flux or solid density at any point in the fluidized bed horizontally in the X-direction, how can we enable the software to give such a time averaged plot.