Overview of the Boundary Nodes in the Hydrogen Fuel Cell and Water Electrolyzer Interfaces
Boundary nodes applying constraints or flux contributions to one phase only are added as subnodes. The following boundary subnodes can be added to Electronic Conducting Phase:
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Insulation (default)
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Electric Ground
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Electric Potential
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Electrode Current
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Electrode Current Density
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Electrode Power
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Internal Electrode Contact Resistance
The following boundary subnodes can be added to Electrolyte Phase:
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Insulation (default)
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Electrolyte Potential
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Electrolyte Current Density
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Internal Electrolyte Contact Resistance
The following boundary subnodes can be added to H2 or O2 Gas Phase:
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No Flux (default)
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Inlet
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Outlet
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Flux
The following boundary subnodes can be added to Membrane:
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Water Absorption-Desorption, H2/O2 side (default)
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Water Flux
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Water Chemical Potential
The following additional boundary nodes, with contributions to multiple phases, can be added as nodes directly under the interface node:
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Thin Gas Diffusion Electrode
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Electrode Surface
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Internal Electrode Surface
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Periodic Condition