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What are "outer boundaries" and "internal boundaries"?
Posted Jul 29, 2016, 1:56 a.m. EDT Electrochemistry Version 5.2 2 Replies
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Hello.
When I read the Corrosion Module User's Guide, I could not figure out the meaning of "outer boundary" and "internal boundary" exactly.
So I want to know the exact meanings of them.
In the "Electrode Surface" section at p.79 of the CorrosionModuleUsersGuide.pdf(ver5.2), it is said:
"This node can only be applied on outer boundaries to electrolyte domains. For internal boundaries between electrolyte and electrode domains, use the Internal Electrode Surface node."
This means that there are two nodes for setting the electrochemical reaction at the electrode surface and I should choose one of them case by case.
Please tell me what are outer boundary and internal boundary.
And I also want to know the example using Electrode Surfce node or Internal Electrode Surface node (if possible).
When I read the Corrosion Module User's Guide, I could not figure out the meaning of "outer boundary" and "internal boundary" exactly.
So I want to know the exact meanings of them.
In the "Electrode Surface" section at p.79 of the CorrosionModuleUsersGuide.pdf(ver5.2), it is said:
"This node can only be applied on outer boundaries to electrolyte domains. For internal boundaries between electrolyte and electrode domains, use the Internal Electrode Surface node."
This means that there are two nodes for setting the electrochemical reaction at the electrode surface and I should choose one of them case by case.
Please tell me what are outer boundary and internal boundary.
And I also want to know the example using Electrode Surfce node or Internal Electrode Surface node (if possible).
2 Replies Last Post Aug 1, 2016, 8:27 p.m. EDT
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Posted:
8 years ago
An "outer" boundary is one that has a meshed (computation) region on only one side of it. An inner boundary has meshed (computation) regions on both sides. An outer boundary is like an "exterior wall" of your house, while an inner boundary is like an "interior wall" in your house.
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Posted:
8 years ago
Hi, Robert
Your answer helps me understand the difference between two types of boundaries.
So it means that I should use the Electrode Surface node to set the electrode potential when the computation region is the electrolyte only, right?
Your answer helps me understand the difference between two types of boundaries.
So it means that I should use the Electrode Surface node to set the electrode potential when the computation region is the electrolyte only, right?