CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Post-Processing

p or p_rgh in "forces" function in controlDict

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

LinkBack Thread Tools Display Modes
Old   July 11, 2013, 11:08
Default p or p_rgh in "forces" function in controlDict
New Member
Join Date: Apr 2013
Posts: 11
Rep Power: 6
mcathela is on a distinguished road
Hi Foamers,

I have a question about the pressure used in the "forces" function in the controlDict file.

My case is a cylinder floating in a tank of water. The free surface is still, there is no incident wave. At t=0, I raise the cylinder of x centimeters (vertically) and then I let it go. I look at the free decay oscillations of the body and I would like to monitor the heave radiation forces.

- if I put "p" for pName, does this mean that I will have the force from the total pressure?
- if I put "p_rgh", does this mean that I will have the hydrodynamic force (from the dynamic pressure)?
- and if I put "p_rgh", does this lead to the correct viscous force?

I hope that someone can bring an answer!

mcathela is offline   Reply With Quote

Old   January 10, 2014, 02:13
Join Date: Oct 2011
Location: new caledonia
Posts: 73
Rep Power: 8
laurent98 is on a distinguished road
i'am interesting by the answer too...
laurent98 is offline   Reply With Quote


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
mesh airfoil NACA0012 anand_30 OpenFOAM Meshing & Mesh Conversion 12 December 12, 2011 05:16
controlDict 'forces' function: multiple output files? lordvon OpenFOAM 0 January 10, 2011 17:22
Compilation errors in ThirdPartymallochoard feng_w OpenFOAM Installation 1 January 25, 2009 07:59
Problem with compile the setParabolicInlet ivanyao OpenFOAM Running, Solving & CFD 6 September 5, 2008 20:50
Please help about the VTKFoam liugx212 OpenFOAM Running, Solving & CFD 0 November 18, 2005 19:27

All times are GMT -4. The time now is 15:26.