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What type of boundary conditions to use for a part of electric chain
Posted 07.01.2013, 13:06 GMT-5 Low-Frequency Electromagnetics Version 4.3a 1 Reply
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Hello, I'm not really good with DC, but I have to solve one problem connected to it very closly.
I have a model of a bimetallic Copper-Aluminium conductor. I know, that the value of generated current density in my conductor can achieve 100[A/cm^2].
I can't understand what type of boundary conditions should I use in electric currents interface to make my conductor a part of an electric chain. Here is the chain: aluminium is connected to the transmission line, and copper is connected to an electrode of steel (such conductors are used during electrolysis of Al to connect transmission line aluminium cables with electrodes of steel). So what boundary condition should I use instead of transmission line "Normal current density" or "Terminal" or some other..., and what instead of electrode "Ground" or "Terminal" and choose circuit?
I have a model of a bimetallic Copper-Aluminium conductor. I know, that the value of generated current density in my conductor can achieve 100[A/cm^2].
I can't understand what type of boundary conditions should I use in electric currents interface to make my conductor a part of an electric chain. Here is the chain: aluminium is connected to the transmission line, and copper is connected to an electrode of steel (such conductors are used during electrolysis of Al to connect transmission line aluminium cables with electrodes of steel). So what boundary condition should I use instead of transmission line "Normal current density" or "Terminal" or some other..., and what instead of electrode "Ground" or "Terminal" and choose circuit?
1 Reply Last Post 09.01.2013, 15:49 GMT-5
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Posted:
1 decade ago
Hi
I'm not fully understanding your question!
If you have several conducting domains (materials) with common boundaries, the default seting of COMSOL is flux continuity over "union = common" boundaries. So if you set a GND boundary on one side of your path, and a port/terminal on the other side you will get the current flow as best solving the equation and considering the material properties along the path
--
Good luck
Ivar
I'm not fully understanding your question!
If you have several conducting domains (materials) with common boundaries, the default seting of COMSOL is flux continuity over "union = common" boundaries. So if you set a GND boundary on one side of your path, and a port/terminal on the other side you will get the current flow as best solving the equation and considering the material properties along the path
--
Good luck
Ivar