Density for mixture
 

Hi all,

I am modeling a gas-porous solid reaction. When I used Volume-weighted-mixing-law for the mixture density, all the calculations went fine without any problems. But, when I switched it to Ideal-gas, the calculation stopped with a Floating point exception error. The residuals for the turbulence terms got increased with iterations. What would be solutions to this problem?

Thank you,
Yije