FDS stopped

179 views
Skip to first unread message

max3...@googlemail.com

unread,
Nov 16, 2015, 2:11:38 AM11/16/15
to FDS and Smokeview Discussions
Hi,

I wanted to run my fds simulation during the weekend. When I started the fds file simulation began and stopped after approx. 1,5 s simulation time.
I thought there might be a complication with the file because I worked with pyrosim thus started the simulation with pyrosim. Now the simulation
stopps after approx. 167s simulation time, the overall time is still counting.

Computer was active the entire time. Anyone any idea what could be the problem?

Regards

jacques Frezabeu

unread,
Nov 16, 2015, 2:14:41 AM11/16/15
to fds...@googlegroups.com

Could you add the error message displayed  in the FDS / pyrosim windows ?

--
You received this message because you are subscribed to the Google Groups "FDS and Smokeview Discussions" group.
To unsubscribe from this group and stop receiving emails from it, send an email to fds-smv+u...@googlegroups.com.
To post to this group, send email to fds...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/fds-smv/ff2535e1-d018-4abb-a867-c959cf99c169%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

max3...@googlemail.com

unread,
Nov 16, 2015, 2:23:28 AM11/16/15
to FDS and Smokeview Discussions
Oddly there is no error occuring. FDS just closes itself and pyrosim just keeps running without calculating (its now 64h running and still 117 s simulation time)

max3...@googlemail.com

unread,
Nov 16, 2015, 5:47:41 AM11/16/15
to FDS and Smokeview Discussions
15-11-16-DIN-18232-2.fds

Kevin

unread,
Nov 16, 2015, 8:50:52 AM11/16/15
to FDS and Smokeview Discussions
Your left wall abuts the exterior boundary of the computational domain. You then open or close a door by removing or adding an obstruction. Do not do this. If you are only interested in simulating the interior of an enclosure, the exterior boundary of the domain can serve as the external wall of the enclosure. However, if you want to open and close doors and windows, provide about 1 m of distance between the wall and the exterior of the domain, and specify OPEN boundary conditions on the exterior. In your case, you seem to be using both strategies, but with the left wall, you are creating a problem.

&MESH ID='Mesh01', IJK=127,51,39, XB=-1.39,34.0,-0.2,17.0,0.0,13.0/

and the case runs beyond the numerical instability that occurred at 1.38 s. I am running the latest code base, so your results might be slightly different. Also, if you run FDS, single mesh, from PyroSim and get a different result than you do at the command line, you might want to check your FDS version. PyroSim does nothing special to run a single mesh case.



On Monday, November 16, 2015 at 5:47:41 AM UTC-5, max3...@googlemail.com wrote:

Reply all
Reply to author
Forward
0 new messages