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singular matrix 3D -the 2D code works but not 3D!

Posted 4 ott 2018, 02:43 GMT-4 Low-Frequency Electromagnetics, Microfluidics, Mesh Version 5.2 2 Replies

Salem H
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Hi

I have a situation, I have a 2D code that works fine but when I extend the code to 3D it always has NAN or singualr matrix issue?!?!

Its Navier stokes and PNP eqaution plus magnetic field, the problem is with magnetic field (ampere law) that casue sigular matrix in 3D,

can anyone please comment, I played with mesh did not help, all BCs are same as 2D...please help

Thanks

2 Replies Last Post 7 ott 2018, 05:07 GMT-4
Nirmal Paudel Tribhuvan University/Electrical Engineering
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Posted: 6 years ago 6 ott 2018, 07:25 GMT-4

Please share the model file so that I can take a look and suggest you the changes needed.

BR/Nirmal

Please share the model file so that I can take a look and suggest you the changes needed. BR/Nirmal
Salem H
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Posted: 6 years ago 7 ott 2018, 05:07 GMT-4

Hi Nirmal, I sent it to your private mail. thanks alot!

Hi Nirmal, I sent it to your private mail. thanks alot!

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