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Circular Variable Dependency
Posted 1 apr 2012, 04:48 GMT-4 Materials, Parameters, Variables, & Functions Version 4.2a 1 Reply
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Hi,
in one of my materials I want to have conductivity which is dependent on the current density. However, when I use
sigme=(1e10)*(1e8[A/m^2]/mf.normJ)^(-10)[S/m]
I get a 'Circular Variable Dependency error detected: Variable: mod1.mf.normJ'.
normJ is defined through Ji and Je, and Je has a dependency on sigma (sigma*dA/dt + curl(B/mu0mur) ).
So how can it be done?
thanks,
Shoval
in one of my materials I want to have conductivity which is dependent on the current density. However, when I use
sigme=(1e10)*(1e8[A/m^2]/mf.normJ)^(-10)[S/m]
I get a 'Circular Variable Dependency error detected: Variable: mod1.mf.normJ'.
normJ is defined through Ji and Je, and Je has a dependency on sigma (sigma*dA/dt + curl(B/mu0mur) ).
So how can it be done?
thanks,
Shoval
1 Reply Last Post 16 apr 2012, 11:52 GMT-4
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Posted:
1 decade ago
Well I asked support via e-mail and I was told that comsol should have no problem computing such things. So there must be something that can be done.
so I have no attached my model, without the mesh to make it small enough to post; can anyone recreated the mesh and help me here?
How to create the mesh:
Mesh1>
Size- General physics, predefined normal
Free tetrahedral x3
one for domain 4 with >size>Maximum element size 0.003 minimum element size 0.0006
one for domains 1,3,5, >size>predefined coarse
one for domains 2,6 with >size>predefined extra coarse
the meshing should work, and have 2 warnings.
help will be greatly appreciated.
Thanks,
Shoval
so I have no attached my model, without the mesh to make it small enough to post; can anyone recreated the mesh and help me here?
How to create the mesh:
Mesh1>
Size- General physics, predefined normal
Free tetrahedral x3
one for domain 4 with >size>Maximum element size 0.003 minimum element size 0.0006
one for domains 1,3,5, >size>predefined coarse
one for domains 2,6 with >size>predefined extra coarse
the meshing should work, and have 2 warnings.
help will be greatly appreciated.
Thanks,
Shoval
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