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Help me to solve this error

Posted Jun 12, 2020, 6:26 a.m. EDT 3 Replies

Sundaramahalingam S
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Failed to find a solution. Singular matrix.

There are 5896 void equations (empty rows in matrix) for the variable comp1.Az. at coordinates: (0.0541453,0.02559), (0.054005,0.0258867), (0.048879,0.0346035), (0.0486893,0.0348713), (0.0538274,0.0262506), ... and similarly for the degrees of freedom (empty columns in matrix). Returned solution is not converged. Not all parameter steps returned.

3 Replies Last Post Jun 15, 2020, 8:56 a.m. EDT
Jeff Hiller COMSOL Employee

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Posted: 5 years ago Jun 12, 2020, 9:22 a.m. EDT

Hello Sundaramahalingam,

Please consider posting your mph file. It's near impossible to help you without it.

Best,

Jeff

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Jeff Hiller
Hello Sundaramahalingam, Please consider posting your mph file. It's near impossible to help you without it. Best, Jeff
Sundaramahalingam S
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Posted: 5 years ago Jun 13, 2020, 6:00 a.m. EDT
Updated: 5 years ago Jun 15, 2020, 12:11 a.m. EDT

Dear Jeff, Thanks for your reply. Pl find the attached mph file. Help me to find my mistakes and suggest me on how to choose suitable mesh.

Dear Jeff, Thanks for your reply. Pl find the attached mph file. Help me to find my mistakes and suggest me on how to choose suitable mesh.

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Jeff Hiller COMSOL Employee

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Posted: 4 years ago Jun 15, 2020, 8:56 a.m. EDT

Please post your mph file, not mphbin.

Best,

Jeff

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Jeff Hiller
Please post your mph file, not mphbin. Best, Jeff

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