[gomane8]

hi
first iam a Phd student, iam working on scour around piers! i have start (to familiris with fluent) to simulate the free surface flow! VOF !! just general cases!! and after that i have begin with the eulerian
for that i have meshed a 3D rectangular domain with hex+cooper! after that i have switch to fluent:
i use a wter velocity IN (there is a domaine under that =the sand) and a pressure outlet
i have set the second phase as sand and For the other paramétr, i have:
granular visco+ solid pressur = saymlal & obrein
granular bulk+radial distrubution=l'un & al
frictional visco=shaffer
granular T°=algebric
iam using the K-epslon+RNG+enabl swep
the velocity is about 0.5m/s and for the URF: all default
for initialisation i use the Velocity of water and then i mark the region of sand after that i patch that domain with Volume fraction of sand = 1!
i have check the min area = 10^-7 so the time step size = sqrt(min A)/Velocity...
the problm that i have not get a logik deformation of the sand surface!!! i dont know why!!! so i need your help!
and for the time step size!!do iam wright???
any help from you is very apreciate!!
abdellah