Redlich Kwong real gas model for species mixture Helium and Argon
 

Hi all ,
I am using Fluent 12.0 to solve Redlich Kwong real gas model for species mixture HE and AR . My problem is 2D -Axisymmetric ,transient and turbulence problem . I have applied Outet B.C with pressure vs time profile. I am having convergence issues with both Density and Pressure Based,Implicit solvers . Please let me know if you have any idea in Redlich real gas model .