Any idea about mesh points
 

hi there,
just wana have your opinion if there is a flow channel of dimension 0.872 m * 0.079 m and we are investigating flow blockage in it then arbitrary how many grid points would be sufficient
consider each case if im using each of following models for turbulence
k-ep
k-ep Realizable
k-ep Rng
k-w standard
k-w SST