CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > Fidelity CFD

Simulation time for Planing Regime

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

Like Tree1Likes
  • 1 Post By anna_mir

LinkBack Thread Tools Search this Thread Display Modes
Old   October 1, 2020, 05:08
Default Simulation time for Planing Regime
New Member
Alexander Hadley
Join Date: Oct 2020
Posts: 1
Rep Power: 0
AlexHad is on a distinguished road

I am currently running simulations on FineMarine for a planing monohull. The mesh is quite refined but my AGR is
"coarse" and restricted to a smaller box around the craft rather than the whole domain.
I just wanted to ask if anyone has done a similar simulation and what their experience of the time
required was? I am running mine on an 8 core machine and it is taking about 14 hours to do 200 time steps.
Please let me know if you've ever done something similar and if I should be expecting more or less time for this.

Thanks so much
AlexHad is offline   Reply With Quote

Old   January 7, 2021, 04:52
New Member
Anna Mir
Join Date: Jan 2020
Posts: 2
Rep Power: 0
anna_mir is on a distinguished road
Hello Alex,

The computation time will depend on the hardware, but to have reasonable computation times you should have between 100 000 and 500 000 cells per core. In your case, that means a maximum of 4 million cells. Ideally, the initial mesh should be smaller than that because AGR will add new cells.

What can you do in practice?

- Make sure hyperthreading is deactivated in the machine.
- Reduce the mesh size: choose the "Medium" or "Coarse" mesh option in the C-Wizard
- In HEXPRESS, deactivate viscous layer insertion in surfaces that will remain dry.

Best regards,
colinda1 likes this.
anna_mir 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
courant number increases to rather large values 6863523 OpenFOAM Running, Solving & CFD 22 July 6, 2023 00:48
pimpleDyMFoam computation randomly stops babapeti OpenFOAM Running, Solving & CFD 5 January 24, 2018 06:28
Stuck in a Rut- interDyMFoam! xoitx OpenFOAM Running, Solving & CFD 14 March 25, 2016 08:09
plot over time fferroni OpenFOAM Post-Processing 7 June 8, 2012 08:56
Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3 bookie56 OpenFOAM Installation 8 August 13, 2011 05:03

All times are GMT -4. The time now is 12:10.