ERROR #002100048 has occurred in subroutine SU_BNEXT

Mandar saraf · August 29, 2015, 15:19

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 http://www.cfd-online.com/Forums/cfx...1100279-a.html to a new thread ]

Mandar saraf · August 29, 2015, 15:26

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 ..

ghorrocks · August 30, 2015, 06:31

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.

Mandar saraf · September 3, 2015, 13:55

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

ghorrocks · September 3, 2015, 17:50

You need to generate a mesh with internal nodes. The error message makes that very clear.

Mandar saraf · September 3, 2015, 23:35

sir, i have already done meshing with internal node .To cross check this i used section view in ansys meshing.

ghorrocks · September 4, 2015, 05:26

Somewhere in your model is a location with no internal nodes or you would not get the error message.

Mandar saraf · September 4, 2015, 05:31

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?

ghorrocks · September 5, 2015, 05:49

It may well be. You should be able to check it easily.

Can you post an image of what you are modelling?

August 29, 2015, 15:19	ERROR #002100048 has occurred in subroutine SU_BNEXT	#1
Mandar saraf New Member Mandar saraf Join Date: Aug 2015 Posts: 16 Rep Power: 10	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 http://www.cfd-online.com/Forums/cfx...1100279-a.html to a new thread ] Last edited by wyldckat; August 30, 2015 at 15:32. Reason: see "Moderator note:"

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
ERROR #001100279 has occurred in subroutine ErrAction.	aniseh	CFX	6	October 5, 2015 11:01
ERROR #001100279 has occurred in subroutine ErrAction.	sujay	CFX	8	December 10, 2014 12:09
ERROR #002100004 has occurred in subroutine Out_Scales_Flu -> Reynolds-Number = 0???	thda7	CFX	2	June 21, 2014 05:53
ERROR #001100279 has occurred in subroutine ErrAction.	P9408	CFX	1	August 19, 2009 07:56
ERROR #001100279 has occurred in subroutine ErrAct	Carl	CFX	2	July 16, 2005 14:39

August 29, 2015, 15:26		#2
Mandar saraf New Member Mandar saraf Join Date: Aug 2015 Posts: 16 Rep Power: 10	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 ..

August 30, 2015, 06:31		#3
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	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.

September 3, 2015, 13:55		#4
Mandar saraf New Member Mandar saraf Join Date: Aug 2015 Posts: 16 Rep Power: 10	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

September 3, 2015, 17:50		#5
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	You need to generate a mesh with internal nodes. The error message makes that very clear.

September 3, 2015, 23:35		#6
Mandar saraf New Member Mandar saraf Join Date: Aug 2015 Posts: 16 Rep Power: 10	sir, i have already done meshing with internal node .To cross check this i used section view in ansys meshing.

September 4, 2015, 05:26		#7
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	Somewhere in your model is a location with no internal nodes or you would not get the error message.

September 4, 2015, 05:31		#8
Mandar saraf New Member Mandar saraf Join Date: Aug 2015 Posts: 16 Rep Power: 10	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?

September 5, 2015, 05:49		#9
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	It may well be. You should be able to check it easily. Can you post an image of what you are modelling?