CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM

Negative Cell Volume with moveDyMEngineMesh with Foam Extend 3.0

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

LinkBack Thread Tools Search this Thread Display Modes
Old   January 24, 2014, 03:29
Default Negative Cell Volume with moveDyMEngineMesh with Foam Extend 3.0
New Member
Join Date: Dec 2012
Posts: 21
Rep Power: 13
RJ87 is on a distinguished road
Hi foamers,

I manage to have this case running with older version of OpenFoam-1.6ext. But, it doesn't work with another computer of mine installed with Foam-Extend-3.0. I can't identify where is the different between older version OpenFoam 1.6-ext and Foam-Extend-3.0.

attached is a sample case and any help here will be greatly appreciated.

negative cell volume. Error in mesh motion before topological change.

    From function bool layerAdditionRemoval::changeTopology() const
    in file polyMeshModifiers/layerAdditionRemoval/layerAdditionRemoval.C at line 295.

FOAM aborting

Aborted (core dumped)
Attached Files
File Type: gz Engine.tar.gz (22.2 KB, 17 views)
RJ87 is offline   Reply With Quote

Old   May 7, 2014, 19:23
New Member
virelli giuseppe
Join Date: Nov 2011
Posts: 14
Rep Power: 14
yvyan is on a distinguished road
Hi JR87,
I am finding problems similar to yours in migrating from 1.6-ext version to 3.0-ext version.
The dieselEngineDyMFoam solver that I created where I activated "layer addition removal" does not work properly anymore in 3.0-ext (on the other hand it works properly in 1.6-ext):
there is no layer removal even though "minimal thickness" < "removal threshold" and at the end the simulation crashes because of negative volume!

Did you solve? Have you got some suggestion?
yvyan is offline   Reply With Quote

Old   May 8, 2014, 12:13
Senior Member
mturcios777's Avatar
Marco A. Turcios
Join Date: Mar 2009
Location: Vancouver, BC, Canada
Posts: 740
Rep Power: 28
mturcios777 will become famous soon enough
Speaking only from my experiences with getting the layerAdditionRemoval modifier to work in the official versions, I would check the mesh class you are using (seems like layerAR for the engineTopoChangerMesh type) is actually sending the signal to remove layers. The variable in the update() function is realDeformation I think.
mturcios777 is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
how to set periodic boundary conditions Ganesh FLUENT 15 November 18, 2020 06:09
Problem related to topology Ank OpenFOAM 3 May 2, 2012 05:08
Negative cell volume problem schuny FLUENT 8 April 10, 2012 05:16
[Other] StarToFoam error Kart OpenFOAM Meshing & Mesh Conversion 1 February 4, 2010 04:38
blockMesh: block with 6 vertexes dani OpenFOAM 3 June 25, 2009 13:13

All times are GMT -4. The time now is 01:05.