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

Calculation Stopping Halfway

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

LinkBack Thread Tools Search this Thread Display Modes
Old   December 11, 2018, 07:48
Unhappy Calculation Stopping Halfway
New Member
Join Date: Sep 2018
Posts: 7
Rep Power: 6
Legolas is on a distinguished road
Hi Everyone,

I am currently doing a simulation on fluent. I first set to 1000 iterations. However half way at about 180 - 225 iterations it will automatically stop and show error like "MPI Application rank 0 killed before MPI_Finalize() with signal 9 The fluent process could not be started." and also "Error at Node 0: floating point exception

Error at host: floating point exception

Error: floating point exception
Error Object: #f"

The convergence graph is looking pretty good however towards the 180 - 225 there is a sudden high spike and then the entire calculation just stops.

What could be happening?

Thanks guys!

Legolas is offline   Reply With Quote

Old   December 11, 2018, 13:39
Senior Member
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,061
Rep Power: 60
LuckyTran has a spectacular aura aboutLuckyTran has a spectacular aura aboutLuckyTran has a spectacular aura about
The MPI error is quite generic and doesn't really mean anything except that it says Fluent crashed.

The floating point exception means your case diverged. Unlucky!

200 iterations is not very many. The fact that your case didn't diverge before 200 iterations doesn't mean that it was converging. Figure out why you case is diverging and make the needed adjustments.

Check boundary conditions. Check initial conditions. Check the mesh.
LuckyTran is offline   Reply With Quote


calculation, convergence, iteration

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
Dynamic mesh adaption in parallel calculation xh110120 FLUENT 1 March 12, 2016 09:05
Determining the calculation sequence of the regions in multe regions calculation peterhess OpenFOAM Running, Solving & CFD 4 March 9, 2016 04:07
Asymptotic stopping criterion is not working rob50904 STAR-CCM+ 2 January 28, 2013 09:25
MRF and Heat transfer calculation Susan YU FLUENT 0 June 2, 2010 09:46
Warning 097- AB Siemens 6 November 15, 2004 05:41

All times are GMT -4. The time now is 06:42.