CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Pre-Processing

Problem to run flow around a cylinder - LES case

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

LinkBack Thread Tools Display Modes
Old   August 26, 2014, 07:47
Default Problem to run flow around a cylinder - LES case
New Member
valerio galluzzi
Join Date: Jan 2014
Posts: 9
Rep Power: 3
valerio galluzzi is on a distinguished road
Hi everyone,

I work on a LES case of a flow around a circular cylinder. I have already set all OpenFOAM files, but I have problems to run it.
The geometry is a 3D parallelogram which has inside a circular cylinder, so there is an input face, an output face, an up and a bottom faces and a left and a right faces. The "left&right" face has cyclic type.
I did the mesh by gmsh and I imported it using "gmshToFoam" command. I modified the patch inside the constant/polymesh/boundary file:

- left&right type cyclic;
- (body) Wall type wall

then I used "foamUpgradeCyclics" command that created new files inside the 0/ directory. The I used the "decomposePar" command to decompose the domain, but here it is the problem:

face 0 area does not match neighbour by 23.2157% -- possible face ordering problem.
patch:Left&Right_half0 my area:4.4218e-08 neighbour area:3.50202e-08 matching tolerance:0.0001
Mesh face:1027210 fc-0.00840603 -0.00188235 0.0005)
Neighbour fc0.0142184 0.00530556 0.0005)
If you are certain your matching is correct you can increase the 'matchTolerance' setting in the patch dictionary in the boundary file.
Rerun with cyclic debug flag set for more information
valerio galluzzi is offline   Reply With Quote


cyclic boundaries, cyclic boundary, cyclic patch, large eddy simulation, openfoam 2.1

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
Run A propeller case with AMI and not accelerated flow behind the blades... reza1980 OpenFOAM 6 September 11, 2013 03:09
convergence problem when use pisoFoam, LES for wind tunnel case Forrest_Lei OpenFOAM 3 July 19, 2011 06:00
Flow around a cylinder in chapter 3 of OF Programer's Guide can not run with OF 1.6 universez OpenFOAM Bugs 3 September 11, 2010 21:46
problem when I run the case Rui CD-adapco 1 February 1, 2007 07:25
batch file script to run unsteady flow (les) andi FLUENT 0 April 20, 2004 03:50

All times are GMT -4. The time now is 05:29.