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

time step incompressible flow

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 31, 2006, 09:10
Default time step incompressible flow
  #1
Nicolas CAPRON
Guest
 
Posts: n/a
I want compute an unsteady incompressible flow expluctly. I gave the courant number but you obtain this message :

"You cannot use global time stepping to compute unsteady incompressible flows"

How to run?

thanks
  Reply With Quote

Old   October 31, 2006, 10:26
Default Re: time step incompressible flow
  #2
rassai
Guest
 
Posts: n/a
In "unsteady formulation", you must choice "1st order implicit" or "2nd order implicit"
  Reply With Quote

Old   May 17, 2013, 16:47
Default
  #3
New Member
 
Marcin K
Join Date: Mar 2013
Posts: 10
Rep Power: 4
Maurosso is on a distinguished road
Hello

I have a similar problem.

I'm doing a transient, compressible (UDF for density and speed of sound), FSI problem with the use of system coupling. I would like to simulate a pressure wave hitting an object, but i get the same error as the topic creator, even thou my fluid is compressible...help?

Will implicit time formulation, for the explicit density-based solver simulate properly the above mentioned phenomena?

thanks in advance for any help
Maurosso 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
Full pipe 3D using icoFoam cyberbrain OpenFOAM 4 March 16, 2011 10:20
Time step in transient simulation shib FLUENT 0 June 17, 2010 13:07
calculation diverge after continue to run zhajingjing OpenFOAM 0 April 28, 2010 04:35
Transient simulation not converging skabilan OpenFOAM Running, Solving & CFD 12 September 17, 2007 17:48
Physical Reason for stability of Implicit Schemes? radhakrishnan Main CFD Forum 25 December 7, 2000 16:25


All times are GMT -4. The time now is 19:50.