[ram Mehar]

i am analysing the flow over the railway wagon. i am finding the particle mass concentration over the wagon. i have done the discrete phase modelling to create the particles.Problem is that, when i am doing mesh independence study by checking the particle mass concentration over the wagon. I am kind of finding vast variations over the value of particle mass concentration. i am finding hard time to check the mesh convergence study. some time the concentration is zero. how to fix this problem. I am very stressed. I need to submit my thesis.