CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

InterFoam Artificially High Velocities

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 8, 2011, 10:43
Default InterFoam Artificially High Velocities
  #1
New Member
 
Jonas Andersson
Join Date: Jan 2011
Posts: 1
Rep Power: 0
andersson.j is on a distinguished road
Hello everybody

I'm using interFoam to generate waves and having some troubles with periodic intervals of high velocities yielding very small time steps. These high velocities are not present during post processing. However the time step size is calculated using the flux field phi where these artificial high velocities appear.


Could someone please explain why do we have the extra term added to phiU (in bold)?

from pEqn.H:
Code:
 
phi = phiU +
    (
        fvc::interpolate(interface.sigmaK())*fvc::snGrad(gamma)
      - ghf*fvc::snGrad(rho)
    )*rUAf*mesh.magSf();
Shouldn't phi be "reset" (equal to U*faceArea) before include CourantNo.H?

I'm using OF1.5dev.

Thanks in advance,
Jonas
andersson.j 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
High depression at low alpha inlet (interFoam) santiagomarquezd OpenFOAM Running, Solving & CFD 0 June 1, 2010 17:18
interFoam: strange pressure with high fluid viscosity? ckroener OpenFOAM 3 April 7, 2010 12:51
Heat transfer coefficient artificially high in BL mat w FLUENT 2 December 28, 2005 19:27
prob at high inlet velocities nkc Main CFD Forum 0 November 27, 2005 21:54
Multicomponent fluid Andrea CFX 2 October 11, 2004 05:12


All times are GMT -4. The time now is 00:36.