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Voltage Driven 3D Multi-Turn Coil Domain
Posted Jul 10, 2012, 12:18 p.m. EDT Low-Frequency Electromagnetics, Studies & Solvers Version 4.3 1 Reply
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Hello All,
I am currently working with a trial version of COMSOL V4.3 in order to see if it will be useful for my research. I am interested in evaluating the magnetic field effects on optically active materials. I have built a simple 3D inductor model using a Multi-Turn Coil Domain feature based off of the example problems. I have successfully solved the model in under a minute using a current source as the coil excitation and it mimics very closely the behavior of my laboratory model. However, when I switch the source to voltage, it took several hours and I got the following error:
"Failed to find a solution. Divergence of the linear iterations. Returned solution is not converged."
Has anyone had a similar issue with this? From my understanding, the equations are the same as when I use a current source except Ohm's Law is applied based on coil resistivity for the given number of turns. Applying a voltage source is crucial based on my experimental setup. Is there something I am missing within my definitions or boundary conditions? I am relatively new to COMSOL so any help would be greatly appreciated! Also, my trial expires in 6 days so please help ASAP!
Thanks!
Brandon
I am currently working with a trial version of COMSOL V4.3 in order to see if it will be useful for my research. I am interested in evaluating the magnetic field effects on optically active materials. I have built a simple 3D inductor model using a Multi-Turn Coil Domain feature based off of the example problems. I have successfully solved the model in under a minute using a current source as the coil excitation and it mimics very closely the behavior of my laboratory model. However, when I switch the source to voltage, it took several hours and I got the following error:
"Failed to find a solution. Divergence of the linear iterations. Returned solution is not converged."
Has anyone had a similar issue with this? From my understanding, the equations are the same as when I use a current source except Ohm's Law is applied based on coil resistivity for the given number of turns. Applying a voltage source is crucial based on my experimental setup. Is there something I am missing within my definitions or boundary conditions? I am relatively new to COMSOL so any help would be greatly appreciated! Also, my trial expires in 6 days so please help ASAP!
Thanks!
Brandon
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1 Reply Last Post Jul 22, 2012, 9:20 p.m. EDT
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Posted:
1 decade ago
Hello Brandon,
When you used voltage source, have you defined a ground plane ?
Try refining your mesh and see what happens.
Good Luck
Hasan
When you used voltage source, have you defined a ground plane ?
Try refining your mesh and see what happens.
Good Luck
Hasan