CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

2way FSi, Initialize with steady solution, Fluent, Transient Sturcural, System Coupli

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

LinkBack Thread Tools Search this Thread Display Modes
Old   June 22, 2016, 08:26
Unhappy 2way FSi, Initialize with steady solution, Fluent, Transient Sturcural, System Coupli
New Member
Join Date: Mar 2014
Posts: 16
Rep Power: 12
mmkkeshavarzi is on a distinguished road
Dear all, I am running a fully coupled Fluid-Structure Interaction in ANSYS Workbench 16.0.
First of all, I have to reach a steady solution to initialize my unsteady (transient) solution in Fluent.
In the similar project just in Fluent, I run steady then i change the solution type to unsteady and calculate. In these case, the steady solution becomes the initialization of my transient solution and the iteration continues as i start the transient solution.
But in Coupling the system, I encounter with this Note from ANSYS.

Note: System coupling overrides the fluent calculations.

By this notification, system coupling initialize my solution with the references values and the steady solution is gone and the transient solution starts with iteration 1.

First, I check to find a solution over the net, but unfortunately, I haven't found any solution till now.

Second, I try to Export Profile, to export all my data from steady solution and use it in my case to have the steady solution
I encounter with two problems here:
1) I have 9.5 m Structured mesh and my computer cannot export this enormous data and the fluent closed abnormally and suddenly
2) I tried with simple geometry and low mesh, as I read profile in new .cas the contours do not show any changes and seems that the profile doesn't work to use as initial condition

Third, I tried to record the script of system coupling, in order to omit the initialization and overriding of fluent calculations, but I didn't find any line by the name of "SOLUTION INITIALIZATION"

My main problem is that, i don't want system coupling to override my calculations.

PLZ and PLZ and more PLZ, If anyone knows anything or at least can suggest me a way to solve my problem, I would really appreciate it
Many Thanks.
mmkkeshavarzi is offline   Reply With Quote


fluent, fsi 2-way coupling, fsi simulation, system coupling

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
Steady solution from Transient simulations wawa FLUENT 2 November 9, 2010 17:44
initialize flow field with steady state solution holg FLUENT 0 July 13, 2009 17:10
IcoFoam parallel woes msrinath80 OpenFOAM Running, Solving & CFD 9 July 22, 2007 02:58
Could anybody help me see this error and give help liugx212 OpenFOAM Running, Solving & CFD 3 January 4, 2006 18:07
About the difference between steady and unsteady problems Lisa Main CFD Forum 11 July 5, 2000 14:37

All times are GMT -4. The time now is 02:43.