1
How does CFDEM calculate particles force on fluid cells?
As I understand , For calculating Drag force on particles we should at first obtain " inter-phase momentum transfer coefficient due to drag" which is shown in Kochhill drag by "betap".
As I saw in the papers , this parameter "betap" is used again when we want to obtain forces from particles on fluid cells. the question is that whether the existed solver consider this parameter ? If yes , How? from which Formula? If not, should I my own add the force from particle to fluid through source tern in momentum equation?
I know the forces from fluid on particles however I do not know how the forces from particle to fluids is applied in momentum equation "Ueqn".
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2-
I saw the solvers and I found "ksl" coefficient. what does this coefficient mean and what is its application in momentum equation?
Is there any relation between ksl and particles force on fluid?