Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Simulating the fluxes at interfaces of membrane-electrolyte for vanadium crossover in vanadium redox flow battery
Posted 21 avr. 2016, 06:02 UTC−4 0 Replies
Please login with a confirmed email address before reporting spam
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.
Attachments:
Hello Swati Gupta
Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.
If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.