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

defining the intial Pressure in SIMPLE model

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

Like Tree2Likes
  • 1 Post By alberto
  • 1 Post By alquimista

Reply
 
LinkBack Thread Tools Display Modes
Old   December 26, 2011, 02:23
Default defining the intial Pressure in SIMPLE model
  #1
Member
 
ahmed
Join Date: Sep 2011
Location: Pune-INDIA
Posts: 34
Rep Power: 6
ahmed_khatibs is on a distinguished road
Dear All,
In SIMPLE model how initial Pressure is define.
thak u
ahmed_khatibs is offline   Reply With Quote

Old   December 26, 2011, 13:02
Default
  #2
Senior Member
 
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,904
Rep Power: 27
alberto will become famous soon enoughalberto will become famous soon enough
It is irrelevant, since you are solving for an incompressible flow. Set it equal to the reference value (the one you fix with a fixedValue BC for the pressure, or in the SIMPLE dictionary).

Best,
ahmed_khatibs likes this.
__________________
Alberto Passalacqua

GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats.
OpenQBMM - An open-source implementation of quadrature-based moment methods.

To obtain more accurate answers, please specify the version of OpenFOAM you are using.
alberto is offline   Reply With Quote

Old   December 26, 2011, 16:54
Default
  #3
Member
 
Join Date: Apr 2010
Posts: 61
Rep Power: 8
alquimista is on a distinguished road
In incompressible solvers the pressure has to be normalized with the density (the dimensions of pressure become pressure divided by density [0 2 -2 0 0 0 0]).


p* = p / rho
(kg/(ms)) / (kg/m) = m / s
ahmed_khatibs likes this.
alquimista is offline   Reply With Quote

Old   December 27, 2011, 02:04
Default
  #4
Member
 
ahmed
Join Date: Sep 2011
Location: Pune-INDIA
Posts: 34
Rep Power: 6
ahmed_khatibs is on a distinguished road
thats great ... thank u .... this will helps me ...
ahmed_khatibs 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
"Pressure Inlet" Boundary Setup Wijaya FLUENT 15 May 18, 2016 10:08
How to add correcting pressure equation in SIMPLE of MRFSimpleFOAM? renyun0511 OpenFOAM Programming & Development 0 November 4, 2010 02:38
mass flow in is not equal to mass flow out saii CFX 2 September 18, 2009 08:07
Few simple questions concerning boundary conditions (pressure) milos OpenFOAM Pre-Processing 1 March 21, 2009 08:08
Does star cd takes reference pressure? monica CD-adapco 1 April 19, 2007 11:26


All times are GMT -4. The time now is 06:16.