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

MRFSimpleFoam result checking

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 8, 2012, 05:52
Default MRFSimpleFoam result checking
  #1
Member
 
Aathavan
Join Date: Nov 2012
Posts: 70
Rep Power: 4
Aadhavan is on a distinguished road
Hi Everyone,
Thanks for the response so far, I am simulating axial fan, I tried in two ways. non of them shows good result. I feel I am extracting the result in the wrong way.
You guys please help me to extract the result

my problem setup is as follows
1) it is passage of a axial fan and it has 4 periodic faces
2) It has 3.1 million (3168990) cells
3) fan is rotating about Z axis positive rpm
4) inlet - flowRateInletVelocity
5) outlet - Gauge Pressure (0)
6) k-epsilon turbulence model

I am measuring the static pressure as follows:
1m before the fan and 0.46m after the fan (0.46 radius of the fan)
inlet static pressure (Psin) is 277Pa, outlet static pressure (Psout) is 364Pa.
the static pressure raise is: Psout - Psin- dynamic pressure = 23Pa (the solution not yet converged still going on)

The second way is:
I have given only negative rotation (-32.2 rad/s)
I checked the result like before: the static pressure raise is at maximum 145Pa
but the actual should be 200Pa.

can you guys please give me some information, what should I do?
I have seen in the forum for actual pressure we need to multiply with density, is it applicable for my case as well?
If I am calculating wrong please guide me,
I am looking for some one to help me

Thanks in advance,
Aadhavan

Last edited by Aadhavan; December 8, 2012 at 13:21.
Aadhavan 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
critical error during installation of openfoam Fabio88 OpenFOAM Installation 21 June 2, 2010 03:01
Problems in compiling paraview in Suse 10.3 platform chiven OpenFOAM Installation 3 December 1, 2009 08:21
OpenFOAM installation problem on Linux 32bit kumar OpenFOAM Installation 0 April 27, 2007 05:41
Help%7e%7einstall openfoam13 on fc5%7e%7e aderliner OpenFOAM Installation 2 September 11, 2006 07:24
Gerris software installation mer Main CFD Forum 2 November 12, 2005 09:50


All times are GMT -4. The time now is 13:50.