CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > Siemens > STAR-CCM+

CCM+ Abaqus FSI coupling

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

LinkBack Thread Tools Search this Thread Display Modes
Old   June 29, 2011, 09:25
Default CCM+ Abaqus FSI coupling
Senior Member
Join Date: Apr 2009
Posts: 531
Rep Power: 21
stumpy is on a distinguished road
Hi all,
I'm a long time FSI user of CFX with ANSYS, but am looking at CCM+ due to a need to couple with Abaqus. After reading the info on the STAR website I'm left with a few questions on this capability.
- How does this capability scale, can both codes run in parallel?
- Is the force transfer to Abaqus conservative?
- Has anybody used this? Good/bad experiences?
stumpy is offline   Reply With Quote

Old   July 10, 2011, 06:23
Senior Member
Join Date: Oct 2009
Location: Germany
Posts: 636
Rep Power: 21
abdul099 is on a distinguished road
I can just answer the first question. As both codes run independendly and just exchance information after every (or a few) time steps / iterations, both should keep all capabilities. ccm+ is able to run in parallel and I assume, abaqus as well.
abdul099 is offline   Reply With Quote

Old   July 25, 2011, 06:36
Senior Member
Join Date: Jul 2010
Posts: 100
Rep Power: 15
daveatstyacht is on a distinguished road
My experience with the two together is that they can both run in parallel, however some operations in abaqus appear to be performed on a single thread. Getting the two programs to start talking for a cosimulation is pretty straight forward with a decent example provided in the starccm+ help files of setting up and running them together. They seem fairly robust so long as the geometries are reasonably close matches and you adhere to the rules listed in star's help file (namely not using hybrid tet or mixed elements in abaqus). Also it is unclear to me if double sided shells can be included (ie sails). If you are doing structural deformation you will probably find the morphing of the domain in star is the slowest part of the process.

My biggest issues with the cosimulation process are that all data transfer happens in the global lab coordinate system (problematic when one wants rigid body motion in addition to deformation) and that as far as I know it is impossible as far as I know to get star to perform the exchanges less frequently than every time step (which means I am performing far more FEA steps and attendant morphing steps than I would like). Overall though I think it is a pretty good setup since the nodes of each domain need not be conformal and the process is reasonably robust considering.
daveatstyacht is offline   Reply With Quote

Old   March 1, 2012, 13:28
Default Need help in FSI,
New Member
abdul khader
Join Date: Dec 2010
Posts: 20
Rep Power: 15
smak.quadri is on a distinguished road
dear stumpy,

i always see your reply on most of FSI related problems, but still i am stuck in my prob from 1 year.

May i Know your maild id so that i can mail u in details my problems. Please help me out , I have to submit my thesis by april.

FSI coupling b/w ANSYS CFX and workbench input file is happening wit no prob for a simple straight tube with time varying velocity at inlet and time varying pressure at outlet.

But the structural deformation is not in radial directio, but it looks like there is a bending in x direction. i tired with cylindrical coordinate system, but stil its same prob.

I feel there is not proper mapping of nodes at interface. The mesh is fine. I tired contacting many people, but my prob still remains the same.

Please help me out and mail me on
smak.quadri 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
Abaqus - Fluent Coupling WITHOUT MPCCI s.mishra FLUENT 1 April 5, 2016 06:47
error in two way fsi kmgraju CFX 1 May 2, 2011 02:32
coupling Star CCM+ with Abaqus for FSI problems joy STAR-CCM+ 0 August 3, 2010 08:00
What is weakstrong coupling in FSI problems hajo OpenFOAM Running, Solving & CFD 5 May 15, 2008 01:45
FSI using abaqus and star cd vs ls dyna or dytran HAYATE Siemens 0 September 16, 2007 03:27

All times are GMT -4. The time now is 02:23.