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More services...warning: Inconsistent pointwise non-ideal constraints found.
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13 Replies
Last post: November 4, 2011 8:13pm UTC
June 1, 2010 3:24pm UTC
warning: Inconsistent pointwise non-ideal constraints found.
Do you know what this means? I get it when trying FSI in Comsol 4. It is non-destructive warning error, yet, it fills all the log file.
Inconsistent pointwise non-ideal constraints found.
4 constraints are merged/removed.
Many thanks
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July 20, 2010 6:31pm UTC in response to Danial Tz
Re: warning: Inconsistent pointwise non-ideal constraints found.
It seems repeating in the Comsol 4.0a too. Anyone?
It gets annoying as all the log file is filled with these messages. The simulation runs normal though.
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August 10, 2010 3:43pm UTC in response to Danial Tz
Re: warning: Inconsistent pointwise non-ideal constraints found.
and this one:
Warning: New constraint force nodes detected: these are not stored !
Anyone?
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August 10, 2010 4:19pm UTC in response to Danial Tz
Re: warning: Inconsistent pointwise non-ideal constraints found.
Hi,
I have been off comsol for a while now [ still have to move to 4.0] but I remember having these kind of warning when my constraint were not properly defined [ weak ideal non ideal.. ] with 3.5
So it is most probably the same things.. you need to clearly understand which type of constraint to use for a given problem .. and it is not easy .. [ to be honnest at the beginning I tried all possible combinations untile these warning messages disappeared.. again this come from my experience with 3.5...
hope this will help anyway
jf
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August 11, 2010 10:25am UTC in response to Jean-Francois Leon
Re: warning: Inconsistent pointwise non-ideal constraints found.
Hi,
I have been off comsol for a while now [ still have to move to 4.0] but I remember having these kind of warning when my constraint were not properly defined [ weak ideal non ideal.. ] with 3.5
So it is most probably the same things.. you need to clearly understand which type of constraint to use for a given problem .. and it is not easy .. [ to be honnest at the beginning I tried all possible combinations untile these warning messages disappeared.. again this come from my experience with 3.5...
hope this will help anyway
jf
Hi Jean Francois,
Yes, you are correct for Comsol 3.5. The problem is that in Comsol 4 this is the error you get when using FSI module, and nothing else. It gives the error on the FSI boundaries.
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November 5, 2010 1:40pm UTC in response to Danial Tz
Re: warning: Inconsistent pointwise non-ideal constraints found.
It is also in Comsol 4.1. I cannot get rid of it. Anyone?
--
Comsol 4.0a, 4.1
Ubuntu 10.04.1
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November 5, 2010 2:28pm UTC in response to Danial Tz
Re: warning: Inconsistent pointwise non-ideal constraints found.
Do you combine pointwise and weak constraints?
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November 5, 2010 2:53pm UTC in response to Kai Herbrig
Re: warning: Inconsistent pointwise non-ideal constraints found.
4 constraints are merged/removed.
Inconsistent pointwise unidirectional constraints found.
This is what it's saying in Comsol 4.1. I am just using a simple fsi boundary condition. Doing nothing special.
--
Comsol 4.0a
Ubuntu 10.04.14
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November 6, 2010 2:04pm UTC in response to Danial Tz
Re: warning: Inconsistent pointwise non-ideal constraints found.
Well, it was just a try, because using weak constraints + pointwise constraints on the same variable and (adjacent) domain will result in problems during the discretisation. So COMSOL maybe removes these additional pointwise constraints, which produces your warning message.
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November 9, 2010 10:51am UTC in response to Kai Herbrig
Re: warning: Inconsistent pointwise non-ideal constraints found.
I have the same one. It could be great to know where these duplicate constraint come from.
I personally got this message when using symmetries.
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October 11, 2011 1:42am UTC in response to Jean-Christophe Lavocat
Re: warning: Inconsistent pointwise non-ideal constraints found.
Did anybody find a solution to this thread? Even I get the warnings "inconsistent unidirectional constraints found". I can't get rid of them.
sirisha
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October 11, 2011 3:57am UTC in response to Danial Tz
Re: warning: Inconsistent pointwise non-ideal constraints found.
and this one:
Warning: New constraint force nodes detected: these are not stored !
Anyone?
If this is still an issue, then Please see http://www.comsol.com/support/knowledgebase/1056/
I am still searching for an answer for the pointwise constraints.
sirisha
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November 4, 2011 8:01pm UTC in response to Sirisha Govindaraju
Re: warning: Inconsistent pointwise non-ideal constraints found.
I'm getting these warnings (FSI problem). Ultimately, my model fails.
Naturally, I suspect that the failure is related to this issue...
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November 4, 2011 8:13pm UTC in response to Chris Menzel
Re: warning: Inconsistent pointwise non-ideal constraints found.
Hi
It could be but the chances are higher that its related to a too large mesh deformation issue, which often participate to trigger these warnings. Have you set the model to plot while solving so you see what is happening, often you need to track the mesh quality, as well as a few probe values in FSI issues
--
Good luck
Ivar
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