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

Inlet profile from 2D velocity and turbulence data

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 10, 2012, 05:26
Default Inlet profile from 2D velocity and turbulence data
  #1
Senior Member
 
Attesz's Avatar
 
Attesz
Join Date: Mar 2009
Posts: 355
Rep Power: 8
Attesz is an unknown quantity at this point
Hi Foamers,

I'm dealing with a simple 3D pipe. I have measurements at the inlet, which is the radial and axial velocity, turbulentKE and nut in terms of the radial distance from the wall. I want to impose this data in U, k and nut and calculate epsilon.

1. If I define my parameters as in the pitzDailyExptInlet tutorial, that is giving the coordinate of the points and the give the values, I'll have the values along one line at the inlet, right? So the values will be interpolated to the nodes?

2. How can I "rotate" the values all along the inlet face to have the data everywhere? Is there a specific BC for that? I'm thinking about cylindricalInletVelocity BC type, but what about k and nut?

Thank you in advance,
Attila
__________________
CFD= Cleverly Formatted Data
Attesz is offline   Reply With Quote

Old   March 11, 2012, 06:53
Default
  #2
Senior Member
 
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,894
Rep Power: 26
alberto will become famous soon enoughalberto will become famous soon enough
groovyBC is your friend: http://openfoamwiki.net/index.php/Contrib_groovyBC

Now it is part of swak4Foam, but the previous page is still useful for info: http://openfoamwiki.net/index.php/Contrib/swak4Foam
__________________
Alberto Passalacqua

GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as live DVD/USB, hard drive image and virtual image.
OpenQBMM - An open-source implementation of quadrature-based moment methods
alberto is offline   Reply With Quote

Old   March 11, 2012, 07:09
Default
  #3
Senior Member
 
Attesz's Avatar
 
Attesz
Join Date: Mar 2009
Posts: 355
Rep Power: 8
Attesz is an unknown quantity at this point
Hello Alberto,

thanks. Finally I'm using a 2D case and the timeVaryingMappedFixedValue type.

Best,
Attila
__________________
CFD= Cleverly Formatted Data
Attesz is offline   Reply With Quote

Reply

Tags
2d data, inlet bc, interpolation

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
Export & Import Velocity profile as Inlet eRzBeNgEl STAR-CCM+ 6 March 26, 2012 05:16
Velocity profile regarding turbulence ??? Aminullah Fluent UDF and Scheme Programming 0 November 18, 2010 02:36
Specify Inlet Velocity Profile JHardes ANSYS 1 March 17, 2010 14:59
inlet velocity profile for fully developed turbule pankaj saha Main CFD Forum 4 August 24, 2007 16:53


All times are GMT -4. The time now is 12:43.