When I perform AC frequency perturbation simulation in comsol I encounter this problem:
In transport of concentrated species the value of density of the compound is evaluated with respect to only 1 of the 2 species.
Example:
I have to set the initial value of mass fraction in TCS module.
If I choose Hydrogen the total density will be 0.025 while if I choose H2O the total density is 0.22.
In stationary study I obtain the real value=0.054.
WHY?
In transport of concentrated species the value of density of the compound is evaluated with respect to only 1 of the 2 species.
Example:
I have to set the initial value of mass fraction in TCS module.
If I choose Hydrogen the total density will be 0.025 while if I choose H2O the total density is 0.22.
In stationary study I obtain the real value=0.054.
WHY?