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ERROR #002100048 has occurred in subroutine SU_BNEXT

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Old   August 29, 2015, 15:19
Default ERROR #002100048 has occurred in subroutine SU_BNEXT
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Mandar saraf
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ERROR #002100048 has occurred in subroutine SU_BNEXT. |
| Message: |
| All vertices for a fluid domain lie on boundaries. This is |
| considered to be a fatal error because control volume gradients |
| cannot be calculated, leading to serious discretization error. |
| |
| A common cause for this error is a mesh which is only one |
| element thick, without symmetry or 1:1 periodicity on the lateral |
| boundaries. If you have this situation, and the domain is |
| two-dimensional, please change the lateral boundary conditions |
| to symmetry or 1:1 periodicity. Alternatively, for |
| three-dimensional simulations, please ensure that your mesh |
| has at least two elements across. |
| |
| Execution is terminating. This error message can be bypassed by |
| setting the expert parameter 'boundary vertex check = f', but |
| be aware that doing so may lead to sigificant solution error.


[ Moderator note: Moved posts from Error #001100279 to a new thread ]

Last edited by wyldckat; August 30, 2015 at 15:32. Reason: see "Moderator note:"
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Old   August 29, 2015, 15:26
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please tell me how to eliminate this error
iam trying to simulate spray dryer, i use porous media and apply interface in fluid and solid.
with same set up i am getting answer, but some time iam getting this error iam very frustated with this thing almost spent my 2-3 days and night to found this but still empty hand, dont knwo what dose this error means and stteing i need to change please help me out of this ..
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Old   August 30, 2015, 06:31
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Glenn Horrocks
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The error you report ("All vertices for a fluid domain lie on boundaries.") is totally different to the rest of this thread. You will probably get a better response if you start a new thread for a new question in future.

This error is exactly as it is described in the error message - you have some regions of your mesh which have no internal nodes (ie all node lie on boundaries). If you are modelling a general flow domain then you are going to have to remesh with more nodes inside the domain.

And please do not post duplicate posts again. You only need to post a question once. I have deleted the duplicate posts.
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Old   Yesterday, 13:55
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thanks for your reply,
Actually iam facing this problem with only porous and fluid intraction, and as a mesh part iam meshing fluid domain using automatic meshing of ansys workbench icme cfd, 14.5 version, how to proceed for solution than ? please reply
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Old   Yesterday, 17:50
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You need to generate a mesh with internal nodes. The error message makes that very clear.
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Old   Yesterday, 23:35
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sir, i have already done meshing with internal node .To cross check this i used section view in ansys meshing.
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Old   Today, 05:26
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Somewhere in your model is a location with no internal nodes or you would not get the error message.
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Old   Today, 05:31
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I agree with you. I am modelling 3mm thick perforated plate as a porous region. so might be there is the problem what do you suggest?
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