CFD Online Logo CFD Online URL
Home > Forums > CFX


Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   July 21, 2009, 00:03
Post Solver
New Member
Vinicius Alexandre Sikora de Souza
Join Date: Jul 2009
Posts: 7
Rep Power: 10
vass is on a distinguished road
Hello, I am beginner in CFX and I am facing a problem in the resolution of my simulation, because every time the solver tries to solve my simulation he has presented the following error message:

"ERROR #002100048 has occurred in subroutine SU_BNEXT.
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."

Does anyone could explain me what this means and how I can solve it, would be immensely grateful that could remedy the problem.
vass is offline   Reply With Quote

Old   July 21, 2009, 01:04
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 14,088
Rep Power: 109
ghorrocks is a jewel in the roughghorrocks is a jewel in the roughghorrocks is a jewel in the roughghorrocks is a jewel in the rough

Read the error message, it means exactly what it says. Your mesh has no internal nodes. You need to do another mesh and fix the problem.

Are you trying to do a 2D simulation? If so you need to define the top and bottom surfaces as symmetry planes as described here

Glenn Horrocks
ghorrocks is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Working directory via command line Luiz CFX 4 March 6, 2011 21:02
why the solver reject it? Anyone with experience? bearcat CFX 6 April 28, 2008 14:08
compressible two phase flow in CFX4.4 youngan CFX 0 July 1, 2003 23:32
CFX 5.5 Roued CFX 1 October 2, 2001 16:49
Setting a B.C using UserFortran in 4.3 tokai CFX 10 July 17, 2001 16:25

All times are GMT -4. The time now is 10:50.