Thank you, Jeff. it‘s really worked. And i wonder know what’s the difference in application between 1.NP(global index of particle), 2.I,J(index of particle being looped over), 3.LL(loop index for particle) and 4.’:’
because when I try to change the des_usr_var(1, : ) into des_usr_var(2, NP) in des_thermo_conv.f to get the value of the convection heat transfer, there is an error in building mfixsolver.
