Fuel cell

Rekha

Hi Everyone,

I am trying to simulate a Fuel cell, sets of equations for the transport phenomena within each layer ( gas channels, gas diffusers, catalyst layers, membrane) are given.

But the entier domain is divided into three domains according to the phases of the fluid. Cathode gas channel-gs diffuser-catalyst layer for the air mixture, the cathode gas diffuser- catalyst layer-membrane-anode catalyst layer- gas diffuser for liquid water, the anode gas channel-gas diffuser-catalyst layer for hydrogen.

(1) All the three domains have thier own coordinate system, How can I define such a domain in Gambit?

(2) There will be electrons and protons in the reactions occuring, how can I define them in Fluent?

(3) There are phase potential equations given for the membrane layer, how can fluent solve them also?

(4) There are two phases in the diffuser and catalyst layers, which model should I use?

(5) How can I define humid hydrogen and air in fluent?

If someone can help I will be really grateful! feel free to ask me if something is needed to answer anyof the above.

Rekha.