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

Modelling Torricelli cylindre with buoyantSimpleFoam - problem with p_rgh

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 22, 2014, 17:17
Default Modelling Torricelli cylindre with buoyantSimpleFoam - problem with p_rgh
  #1
New Member
 
Coheur
Join Date: Aug 2014
Posts: 1
Rep Power: 0
jocoheur is on a distinguished road
Dear Foamers,

I would like to modelize a case like in the Torricelli's cylinder (http://en.wikipedia.org/wiki/Torricelli%27s_law) with one inlet at the top and three outlets on the right side.

I'm using buoyantSimpleFoam, removing turbulence and setting the temperature constant, so that I only have the effect of the gravity influencing my flow.

I'm using atmospheric pressure for the BC of my three outlets for p_rgh and a small velocity is imposed at the inlet. p field is calculated from p_rgh. Pressure fields p_rgh and p are correctly computed, but since openFoam compute U using p_rgh = p - rho*g*h, I don't see the effect of the gravity on the flow (in fact, it is the same as using icoFoam, velocities at the three outlets are the same). I would like to use p instead of p_rgh to have my flow with different velocities at the outlet.

The questions are: How can I make openFoam using my static pressure p? Should I use an other solver for my problem?

Here are the results obtained for velocity field U, p and p_rgh



Thanks in advance

Joffrey

Last edited by jocoheur; November 23, 2014 at 14:32. Reason: add pictures
jocoheur is offline   Reply With Quote

Reply

Tags
buoyantsimplefoam, gravity driven, openfoam, p_rgh, torricelli

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
Fan Modelling Problem in CFX Jenny CFX 8 September 11, 2007 13:59
SST-DES modelling problem Yang CFX 2 May 18, 2007 06:22
Problem with VOF open channel modelling Biswanath Mahato FLUENT 1 September 14, 2006 04:20
problem about modelling fluidized bed! xfish FLUENT 3 November 6, 2003 08:42
modelling of conjugate heat transfer problem ajay chandra FLUENT 1 October 28, 2003 06:51


All times are GMT -4. The time now is 23:27.