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Posted 03.07.2012, 04:43 GMT-4 Heat Transfer & Phase Change, Studies & Solvers Version 4.2a 2 Replies

Juan Jesus Gallardo
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Hi.

When I have created my model, when I have computed it an error message has appeared.

The text was : "Failed to find consistent initial values.
Last time step is not converged."

Someone can help me to find a solution to this problem?

Thanks.
2 Replies Last Post 24.09.2012, 19:25 GMT-4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 03.07.2012, 08:54 GMT-4
Hi

Sorry cannot help much, but that means that your initial conditions are too far away from the final results, think over your model, give a best engineering guess of the dependent variables for the solved case (mostly better tha all "0" and try that as initial conditions, often it helps

And check: is the mesh compliant with the expected model results ?

--
Good luck
Ivar
Hi Sorry cannot help much, but that means that your initial conditions are too far away from the final results, think over your model, give a best engineering guess of the dependent variables for the solved case (mostly better tha all "0" and try that as initial conditions, often it helps And check: is the mesh compliant with the expected model results ? -- Good luck Ivar
Kelley Rabjohns
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Posted: 1 decade ago 24.09.2012, 19:25 GMT-4
I had that same error and was able to fix it by changing the time step.

Go to Study> Solver Configurations> Solver 1> Time-Dependent Solver 1> Time Stepping (in the Time-Dependent Solver window) and change the Initial Step value (make it smaller by at least 1 order of magnitude.)
And this should solve it!

Good Luck

Kelley
I had that same error and was able to fix it by changing the time step. Go to Study> Solver Configurations> Solver 1> Time-Dependent Solver 1> Time Stepping (in the Time-Dependent Solver window) and change the Initial Step value (make it smaller by at least 1 order of magnitude.) And this should solve it! Good Luck Kelley

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