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Matrix has zero on diagonal...

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Im trying to simulate a radiator in which water is flowing through copper tubes and the tubes are surrounded bby fins to transfer the heat. When computing I get the following error:

Matrix has zero on diagonal for the SSOR update submatrix in the Vanka algorithm. In Velocity u, Pressure p: There was an error message from the linear solver. Maximum number of intermediate iterations reached. Returned solution is not converged. Not all parameter steps returned

I am using laminar flow and heat transfer in fluids interfaces.


0 Replies Last Post Jun 30, 2020, 6:04 p.m. EDT
COMSOL Moderator

Hello Mouayed Lajnef

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