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

Graphically Comparing Results in Paraview Between 2 Different Test Cases

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 17, 2019, 11:54
Default Graphically Comparing Results in Paraview Between 2 Different Test Cases
  #1
New Member
 
Bren
Join Date: Jun 2017
Posts: 2
Rep Power: 0
brendancawley is on a distinguished road
Hi Guys,


I am having difficulty in figuring out how to graphically compare pressure or velocity field differences between 2 similar cases from Openfoam in Paraview. The cases have slightly different models and I am trying to graphically see where the flow field changes between them rather than comparing with images from slices etc.
Is there any way in Paraview to compare different case results?
Thanks
Bren
brendancawley is offline   Reply With Quote

Old   November 17, 2019, 12:04
Default
  #2
New Member
 
Torsten Schenkel
Join Date: Jan 2014
Posts: 19
Rep Power: 7
tschenkel is on a distinguished road
Hello,


Are the different cases on the same mesh? If yes, you can load both cases at the same time and use the pythonCalculator or Calculator filter to calculate the relative difference between the two cases at each cell (or point). You can then visualise that difference.

T
tschenkel is offline   Reply With Quote

Old   November 17, 2019, 12:14
Default
  #3
New Member
 
Bren
Join Date: Jun 2017
Posts: 2
Rep Power: 0
brendancawley is on a distinguished road
Hi tschenkel

Thanks for your reply.
Some of the cases are at different velocities but for other cases, where the model has changed, I guess from your reply, that if the mesh changes at all, they can't be compared?
I am familiar with Fluent where two cases could be opened and you could look at a delta pressure or velocity flow field rather than just on an xy graph. Is there any way to achieve something similar?
Thanks again
Bren
brendancawley is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
[General] ParaView is not reading the results bussaco8 ParaView 0 June 6, 2018 04:32
LTS based Lagrangian particle solver and test cases ulli OpenFOAM Announcements from Other Sources 14 September 3, 2016 06:43
Comparing Air numerical results with water experimental results cristian2009es Main CFD Forum 1 July 2, 2014 19:11
critical error during installation of openfoam Fabio88 OpenFOAM Installation 21 June 2, 2010 04:01
Standard CFD test cases? Damon Qualski Main CFD Forum 1 April 10, 2003 15:10


All times are GMT -4. The time now is 08:36.