CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Main CFD Forum

Abaqus CFD Time Step

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 3, 2017, 16:12
Default Abaqus CFD Time Step
  #1
New Member
 
Join Date: Feb 2017
Posts: 1
Rep Power: 0
xuxxx679 is on a distinguished road
Hi,

I'm having a problem in Abaqus CFD. With the CFL condition, it seems that the finer my mesh is, the smaller my time step has to be. Does anyone know how to solve this issue? I'm trying to run a simulation for total period of 2 hrs, so I can't have too small time step.

Thanks,
Danny
xuxxx679 is offline   Reply With Quote

Old   February 3, 2017, 16:37
Default
  #2
Senior Member
 
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 2,905
Rep Power: 34
FMDenaro will become famous soon enoughFMDenaro will become famous soon enough
Quote:
Originally Posted by xuxxx679 View Post
Hi,

I'm having a problem in Abaqus CFD. With the CFL condition, it seems that the finer my mesh is, the smaller my time step has to be. Does anyone know how to solve this issue? I'm trying to run a simulation for total period of 2 hrs, so I can't have too small time step.

Thanks,
Danny
This is typical while using explicit schemes, if your software allows to switch to implicit scheme try that.
FMDenaro is offline   Reply With Quote

Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Extrusion with OpenFoam problem No. Iterations 0 Lord Kelvin OpenFOAM Running, Solving & CFD 8 March 28, 2016 11:08
Stuck in a Rut- interDyMFoam! xoitx OpenFOAM Running, Solving & CFD 14 March 25, 2016 08:09
time step continuity problem in VAWT simulation lpz_michele OpenFOAM Running, Solving & CFD 4 October 15, 2015 06:19
Upgraded from Karmic Koala 9.10 to Lucid Lynx10.04.3 bookie56 OpenFOAM Installation 8 August 13, 2011 04:03
Transient simulation not converging skabilan OpenFOAM Running, Solving & CFD 12 September 17, 2007 17:48


All times are GMT -4. The time now is 15:30.