CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Gambit/Fluent Grid Issues

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

LinkBack Thread Tools Display Modes
Old   March 15, 2010, 19:11
Default Gambit/Fluent Grid Issues
New Member
Join Date: Mar 2010
Posts: 2
Rep Power: 0
Jasperdrums is on a distinguished road
Hello all. New user and CFD newbie here. I am creating a mesh/grid to model flow through an orifice plate (as seen in the picture below). I believe I have set up everything correctly in Gambit but when I try to open it I get the following message in the command window:

> Reading "C:\Documents and Settings\Owner\ProjectMesh.msh"...
69671 nodes.
160 mixed outflow faces, zone 3.
450 mixed axis faces, zone 4.
160 mixed velocity-inlet faces, zone 5.
570 mixed wall faces, zone 6.
137330 mixed interior faces, zone 8.
69000 quadrilateral cells, zone 2.

Cell Centroid is xc 9.990000 yc 0.063350 WARNING: no face with given nodes. Thread 2, cell 100
Error: Build_Grid: grid error.
Clearing partially read grid.

Error: Null Domain Pointer

Error Object: ()

I believe this is indicating that there is a node that has no associated face at the point mentioned. However, what is strange is the point listed is one of the vertices that define my grid and there should be no node with that position as its center. The grid (and the problematic point) is shown below. Any ideas?

Jasperdrums is offline   Reply With Quote

Old   March 15, 2010, 19:42
New Member
Join Date: Mar 2010
Posts: 2
Rep Power: 0
Jasperdrums is on a distinguished road
NOTE: Problem Solved!!!

However, I will leave this thread here in case some one else ever runs into something similar.

The problem had to do with how I defined my mesh. In Gambit, I was using only Quad or square grid sections. Redrawing the grid with quad and triangular sections has appeared to fix the problem. It now reads and opens in Fluent.
Jasperdrums is offline   Reply With Quote

Old   September 14, 2010, 19:24
Default question about your solution
New Member
Tom McCormack
Join Date: Aug 2010
Posts: 5
Rep Power: 9
tsm554 is on a distinguished road

I have the same problem, what do you mean by "redrawing the grid" do you mean remesh in Gambit with a different scheme (volume, faces or both)? If you mean in Fluent which options do you choose (sorry I am new to fluent)?

tsm554 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
Grid size, convergence issues franzdrs Main CFD Forum 3 June 18, 2009 07:57
MapFields to New Grid For Extreme Grid Deformations due to Body Motion albcem OpenFOAM 0 May 5, 2009 14:17
GRID TO GRID INTERPOLATION in FLUENT calogero FLUENT 3 June 4, 2003 08:32
Combustion Convergence problems Art Stretton Phoenics 5 April 2, 2002 05:59
Troubles modelling flow through a grid Hans Klaufus CFX 1 June 28, 2000 16:43

All times are GMT -4. The time now is 14:36.