|February 16, 2007, 12:12||
species mass source in porous media ?
I have 2D case : cylinder (porous media) which is in a much bigger Control volume(non porous) (flow is from inlet to outlet,...). This cylinder is acting like a sink of species.
When I am running a simulation WITHOUT removing specie in this 2D cylinder NON POROUS media and another as a POROUS media : In both cases I have the same species mass fraction,VOLUME Integrale,Vol Avg, Mass Int and Mass Avg in this 2D cylinder zones (porous or Non porous).
To remove a certain amount of specie (in the cylinder) ,I use a UDF(DEFINE_SOURCE) with Si = Mass of specie in cell(i)/ SUM(vol cell(i)).
A)If the cylinder is NonPorous : Non prob.
B)If the cylinder is Porous : There is a Prob : Even though , species have same mass fractions(Porous /non porous) , there is less Species avalaible (less flow rate ) in the cylinder(in the non porous case) : and so there is the not the same amount left in both Cases (less in the porous case).
Q: How this Si (source term) is linked to the local mass flow rate in a cell i ? ; How to solve this problem then ?.
Thanks for any help
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