HinThankyou, but i could not find the DPM variables in the sampling option int he run calculation tab. nInstead i took results>discrete phase>sample and got the data from that. The particle ID here would be the parcel ID right? n( x y z u v w diameter t mass-flow mass frequency time name)nHere for a steady state calculations, would the frequency give me the number of particles in the parcel at a certain x,y,z?nThankyou!nn