CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > REEF3D

Stop and start from the last time step

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

Like Tree2Likes
  • 2 Post By ali_b124

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 27, 2021, 03:08
Default Stop and start from the last time step
  #1
New Member
 
Ali Burhan
Join Date: Apr 2017
Location: İstanbul
Posts: 9
Rep Power: 7
ali_b124 is on a distinguished road
Hello sir,

I want to stop a running simulation and start it after a while from the latest time step? Is that possible ?

Best regards.
fturkmen and Bingcz like this.
ali_b124 is offline   Reply With Quote

Old   May 27, 2021, 04:35
Default
  #2
Super Moderator
 
Arun Kamath
Join Date: Nov 2014
Location: Trondheim, Norway
Posts: 170
Rep Power: 10
kamath is on a distinguished road
Hi Ali,
Yes, you can do that. But you also need to plan for this in advance.
This means, when you run your first simulation, use the P 40 and P41/ P42 options. This saves a state file in intervals specified by the commands above.

In order to continue the simulation, include I 40 /I 41 options. The simulation will load the previous state file selected using I 41 and continue from that point.

Be aware that files that print time series will be overwritten, so take care to save them separately before hot starting the second simulation.
__________________
Arun
Team REEF3D
www.reef3d.com
kamath is offline   Reply With Quote

Old   May 27, 2021, 08:19
Default
  #3
New Member
 
Ali Burhan
Join Date: Apr 2017
Location: İstanbul
Posts: 9
Rep Power: 7
ali_b124 is on a distinguished road
Hi Arun,

Thanks for reply.

Best regards.
ali_b124 is offline   Reply With Quote

Old   August 25, 2021, 05:48
Default Restart problem
  #4
New Member
 
Bingchang Zhang
Join Date: Aug 2021
Posts: 9
Rep Power: 2
Bingcz is on a distinguished road
Hello Sir,

I met a problem when I want to restart a simulation from the previous state file.

I have included P40 and P41, so I have state files, but when I include I40 and I41, then restart the case, the step and simtime are not right as shown in pictures attached. Could you please help about this?

Regards.
restart.jpg

save.jpg
Bingcz is offline   Reply With Quote

Reply

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
Time step size and max iterations per time step pUl| FLUENT 33 October 23, 2020 22:50
DPM-SteadyFlow-About Stop/Stard Time Properties and Particle Time Step Size souria FLUENT 2 October 9, 2014 03:36
Transient DPM-About Start Stop times Julie FLUENT 3 January 24, 2014 07:39
About changing time step at the CFX-solver Anna Tian CFX 6 September 16, 2012 07:47
rhoPisoFoam and time step issue: small dt INcreases INstability francescomarra OpenFOAM Running, Solving & CFD 2 October 15, 2010 12:05


All times are GMT -4. The time now is 15:46.