[souria]

Hey CFD community

I'm simulated sediment transport, using DPM (one way : no interaction either with flow or between particles). So, in "Tracking option" there's two parameters that I don't find more informations in Fluent guides, which are : 1) Tolerance : is the maximum relative error that has to be achieved by the tracking procedure.
2) Max.Refinements : is the maximum number of step size refinements in one single integration step.

My question is : on what parameters/conditions ...should I rely on to put the accuracy number of Tolerance and the Mx. Refinement ?? !! or Random way, which is not so scientific in my sens ??? So what do you think ?

Thanks for your help