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Problem about the constraint force expression

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Hi, everyone

I have a question about the constraint force expression in the comsol model library "Vanadium Redox Flow Battery".

About the setting of Pointwise constraint, I know that in the first constraint expression edit field, the expression is equal to 0 according to Donnan potential, but in the constraint force expression edit field, what's the meaning of 'test(phil_neg+cH_neg/F_const-phil_m)'?


0 Replies Last Post 08.09.2015, 16:12 GMT-4
COMSOL Moderator

Hello Zhou Yu

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