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

Cavity tutorial - Ux plot of graded mesh looks strange

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 15, 2009, 10:00
Default Cavity tutorial - Ux plot of graded mesh looks strange
  #1
Member
 
Wolfram Kretzschmar
Join Date: Dec 2009
Posts: 71
Rep Power: 17
Wolle is on a distinguished road
Hi all,

on my way through the tutorials, I really try to complete all tasks successfully.

At the moment I'm stuck with the cavity tutorial at 2.1.6.3. I mapped the results of the previously refinded mesh to the graded mesh. After executing icoFoam, I checked the results with paraFoam. All seemed to be alright, I did a vector plot (slice & glyph) as suggested. Then I tried to perform another XY plot as suggested by the tutorial.

I calculated the components of U as described and can visualize them in the 3d window (e.g. in the screenshot "Color by: Ux" and "Representation: Surface").
When I apply a "plot over line" filter and chose exactly (yes, I double checked) the same line and settings as in the previous exercise (had two instances of paraFoam running, with one case each), this is, what comes in the plot:



When I set the resolution of the "PlotOverLine" to 1000 (which was 100 at first) as the only change, one can identify the probable characteristics of the real Ux graph. But why aren't the points connected (respectively where does the "value 0" data come from)?



Cheers
Wolle

P.S.: I attach Ux.txt, which is the file 0.8/Ux generated via foamCalc, but had to be renamed to *.txt in order to attach. Maybe this is useful?
Attached Files
File Type: txt Ux.txt (5.3 KB, 2 views)
Wolle 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
newbie problem with cavity tutorial miki OpenFOAM Running, Solving & CFD 8 September 2, 2012 16:22
[blockMesh] generate a graded pipe mesh. jenright OpenFOAM Meshing & Mesh Conversion 0 August 22, 2009 09:58
Convergence moving mesh lr103476 OpenFOAM Running, Solving & CFD 30 November 19, 2007 15:09
Errors during execution of tutorial case with own mesh sergey OpenFOAM Running, Solving & CFD 0 May 18, 2007 04:15
unstructured vs. structured grids Frank Muldoon Main CFD Forum 1 January 5, 1999 11:09


All times are GMT -4. The time now is 03:55.