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

Cp along a line on a boundary surface

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 7, 2006, 06:39
Default Hello I am in the process o
  #1
olle_bodin
Guest
 
Posts: n/a
Hello

I am in the process of making a utility that gives me the pressure and coordinates along a line on a boundary surface. The best way I can describe the function is that I want to specify a boundary patch, a plane and from the line created by the intersection between these extract the pressure values. I have tried the utilities supplied with OF-1.3 but I can not make any of them perform this.

Is this functionality already in OF and the reason I have not succeeded that I have not understood how to do this with the provided utilities? If it is not already in OF I will make this utility.

reg, Olle
  Reply With Quote

Old   December 7, 2006, 09:57
Default Hello I have started lookin
  #2
olle_bodin
Guest
 
Posts: n/a
Hello

I have started looking into this and decided to attempt to alter sampleSurface so that it instead of the entire mesh interpolates only over the cells belonging to a wall-type boundary. Is this a silly idea?

reg, Olle
  Reply With Quote

Old   December 8, 2006, 01:34
Default Hi Olle, I'd be interested
  #3
New Member
 
Richard Morgans
Join Date: Mar 2009
Posts: 16
Rep Power: 17
rmorgans is on a distinguished road
Hi Olle,

I'd be interested in this as well. We have an example where we need to do something similar - extract results along a surface of a smooth contraction, calculated with potentialFoam.

We ended up using sample and offsetting the points from the surface by a fraction - the results are then postprocessed with Matlab. Not an elegant solutions and I started to look around for somethign similar to you.

Cheers

Rick
rmorgans is offline   Reply With Quote

Old   December 8, 2006, 02:09
Default Hello Richard I tried using
  #4
olle_bodin
Guest
 
Posts: n/a
Hello Richard

I tried using sample in that way too but I do not know the exact position of my boundary so it turned out to be just a lot of work. And, since I will need this type of data from rather complex geometries I wanted a more general approach as well.

I will post up any progress I make, I just have to try and understand the code first.

Tjipp

Olle
  Reply With Quote

Old   September 2, 2008, 06:04
Default Hi Olle, Richard, Did you m
  #5
Member
 
Roland
Join Date: Mar 2009
Location: Netherlands
Posts: 92
Rep Power: 17
sylvester is on a distinguished road
Hi Olle, Richard,

Did you manage to create a utility that extracts (and maybe even processes) data from a line on a boundary surface?

If you (or anybody else for that matter) did, or if you know an existing utility that can do this, I would be very interested in it.

By the way, sampleSurface and sample (in OF1.4.1) can not do this (at least not as far as I am aware).

Thank you very much!

Sylvester
sylvester is offline   Reply With Quote

Old   October 6, 2008, 11:47
Default Hi, one option could be to
  #6
Senior Member
 
Fabian Braennstroem
Join Date: Mar 2009
Posts: 407
Rep Power: 19
braennstroem is on a distinguished road
Hi,

one option could be to use visit:
http://www.visitusers.org/index.php?..._create_curves

Or does anyone got something easier without so much clicking?

Fabian
braennstroem is offline   Reply With Quote

Reply


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
making line surface in fluent rosol FLUENT 0 October 6, 2007 03:59
Help! Wots the function of Feature Line&Surface? Deisler Siemens 1 February 1, 2007 21:46
interpolation and line surface Q FLUENT 0 November 9, 2005 05:07
Local surface contour line plots Nandu FLUENT 0 November 10, 2003 00:26
DPM-Particle velocities at line surface Umesh Shah FLUENT 0 March 31, 2003 16:07


All times are GMT -4. The time now is 17:15.