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Inverted mesh element near coordinates.
Posted Sep 7, 2011, 5:24 a.m. EDT 1 Reply
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Hi,
There was warning messages (ALE simulation) :
Inverted mesh element near coordinates (1.94001e-006, -1.45013e-008).
and also ,
The solver did not converge
the error message was
Singular matrix.
Last time step is not converged.
Is there any predictable boundary condition problems?
Thank you
There was warning messages (ALE simulation) :
Inverted mesh element near coordinates (1.94001e-006, -1.45013e-008).
and also ,
The solver did not converge
the error message was
Singular matrix.
Last time step is not converged.
Is there any predictable boundary condition problems?
Thank you
1 Reply Last Post Sep 7, 2011, 10:47 a.m. EDT
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Posted:
1 decade ago
Hi
check (search) the forum there are many discussions around those points. I always recheck my BC when I get a singular matrix. Inverted mesh elements are not necesarily fully dammaging, but with ALE it indicates potential weak regions, or even faults so its worth to investigat the location and the deformed mesh.
Often its instructif to use plotting while solving to see how the solver progresses (not only the convergence value, but a few dependent paramters how they oscillate, or the ALE mesh how it distorts
--
Good luck
Ivar
check (search) the forum there are many discussions around those points. I always recheck my BC when I get a singular matrix. Inverted mesh elements are not necesarily fully dammaging, but with ALE it indicates potential weak regions, or even faults so its worth to investigat the location and the deformed mesh.
Often its instructif to use plotting while solving to see how the solver progresses (not only the convergence value, but a few dependent paramters how they oscillate, or the ALE mesh how it distorts
--
Good luck
Ivar