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

How to accelerate post processing with CFD-Post?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   April 14, 2020, 10:38
Default How to accelerate post processing with CFD-Post?
  #1
New Member
 
Aleksei
Join Date: Jun 2018
Posts: 20
Rep Power: 4
alexksei is on a distinguished road
Hi all

CFD-Post works verly slowly with postprocessing transient results files. It can take up to several hours for postprocessing transient run on 500.000 elements of about 40 timesteps with chart creation or volume rendering. For example, META can do it in less than an hour.

I suppose it is because CFD Post loads file step by step at each timestep of postprocessing.

Is there any way to accelerate it?
alexksei is offline   Reply With Quote

Old   April 14, 2020, 18:21
Default
  #2
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 16,666
Rep Power: 130
ghorrocks is a jewel in the roughghorrocks is a jewel in the roughghorrocks is a jewel in the roughghorrocks is a jewel in the rough
I have never found CFD-Post to be a slow post processor. I find it quite fast. The mesh you talk about is not large, so it is puzzling that it is so slow. Chart creation and volume rendering are normally quick operations.
__________________
Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.
ghorrocks is offline   Reply With Quote

Old   April 15, 2020, 04:23
Default
  #3
New Member
 
Aleksei
Join Date: Jun 2018
Posts: 20
Rep Power: 4
alexksei is on a distinguished road
Quote:
Originally Posted by alexksei View Post
Hi all

CFD-Post works verly slowly with postprocessing transient results files. It can take up to several hours for postprocessing transient run on 500.000 elements of about 40 timesteps with chart creation or volume rendering. For example, META can do it in less than an hour.

I suppose it is because CFD Post loads file step by step at each timestep of postprocessing.

Is there any way to accelerate it?
Sorry, I provided wrong numbers.
My mesh is 11 mln elements. I use volume rendering resolution of 250 planes with 0.2 transparency. I actually wanted to visualize smoke propagation in some big volume.
I tried to run this postprocessing on 30 GB RAM machine and CFDPost almost dies. On a more powerful computer it took me 8 hours to create animation video of this volume rendering. I am still wondering if it is the normal processing speed for CFD Post.
alexksei is offline   Reply With Quote

Old   April 15, 2020, 07:25
Default
  #4
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 16,666
Rep Power: 130
ghorrocks is a jewel in the roughghorrocks is a jewel in the roughghorrocks is a jewel in the roughghorrocks is a jewel in the rough
I don't use the volume render option much but I vaguely recall that is can be slow. So try a different method of showing it - either an isosurface or a cross section plane.
__________________
Note: I do not answer CFD questions by PM. CFD questions should be posted on the forum.
ghorrocks is offline   Reply With Quote

Reply

Tags
cfdpost

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
Post-processing star ccm+ results in Ansys CFD Post sidharath STAR-CCM+ 4 April 10, 2017 11:49
cfd post processing mostanad Visualization & Post-Processing 0 December 29, 2016 15:24
Medical Image Processing Softwares with CFD Analysis and 3D Printing Capabilities CornBlitz Main CFD Forum 3 December 15, 2016 05:05
Modifying Session Files for CFD Post processing Crank-Shaft CFX 6 November 11, 2012 04:46
How to visualize Output Equation Residuals in CFD Post rubin4ik CFX 2 June 22, 2011 06:37


All times are GMT -4. The time now is 07:03.