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membrane _establishment of a pattern

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Hello,

I'm a new user of Comsol and I have to work with Comsol to imitate a membrane of mixed conductors.

So in the membrane I use a coefficient form PDE:
with a =0;f=0;ea=0;alpha=beta=gamma=0 and I created a function for the coefficient c :
1/ exp(u) where u is the independant variable = ln(aO2)
2/facteur (T)= -E/R*T
3/coef(T) = -D0*exp(facteur(T))) = c

After that i have a problem with the boundary conditions. I want to test Drichlet conditions like aO2 = Constant*(pO2/pO)

but in Dirchlet Boundary conditions I don't know how to put this condition. I see u = ... and u for me is ln(aO2)

I hope someone could help me...
Thanks


0 Replies Last Post 16.06.2011, 09:47 GMT-4
COMSOL Moderator

Hello Mathilde Fournier

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