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Simulating the fluxes at interfaces of membrane-electrolyte for vanadium crossover in vanadium redox flow battery
Posted 21 apr 2016, 06:02 GMT-4 0 Replies
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I am working on modelling of vanadium crossover in vfrb. I am using Nernst- Planck eqns and secondary current distribution to model membrane and tertiary current distribution to model electrolyte on the either side of the membrane. I am facing problem in modelling the boundaries of membrane-electrolyte interface. I am considering the interfacial area of finite thickness. And the thickness is assumed to be equivalent to the diffusion boundary layer that exist at the surface of a flow-by electrode . For simplicity membrane side thickness is assumed the same.
For this, in the nernst-planck eqn, concentration and migration terms are discretized as given in the attached image file. (Screenshot001.jpg)
Fluxes for both sides of electrolyte are- (Screenshot002.jpg)
I am not getting at all how to model this fluxes.. I am stuck here from quite a long time.. please help if any one finds it relevant.
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Hello Swati Gupta
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