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DC discharge on COMSOL

Posted Mar 12, 2015, 3:23 a.m. EDT Version 5.2 1 Reply

Ashwin Nambiar
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I'm new to COMSOL.I have designed a converging diverging geometry which acts as anode and a conical cathode .The aim is to create an electric arc between the cathode and anode or rather to obtain a DC discharge when a potential is applied between the cathode and anode. The voltage applied was 150V
I have only used a different geometry but have followed the exact procedures as mentioned in the model library of "POSITIVE COLUMN 2D" .
Upon simulating following as mentioned in the library for my geometry i get errors stating that:
1.Last time step not converged
2.Failed to find consistent initial values

I'm new to COMSOL and donot understand how to go about with it as i'm unable to understand why the error occurs and what it means.I'm using the version 4.4. Will be glad to receive help on how to go about with it.
1 Reply Last Post Jun 5, 2016, 10:34 p.m. EDT
COMSOL Moderator

Hello Ashwin Nambiar

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

李 密斯特
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Posted: 9 years ago Jun 5, 2016, 10:34 p.m. EDT
I have the same model and problem with you.do you get the solution of the problem？
I have the same model and problem with you.do you get the solution of the problem？

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