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

Translate the pressure field on a cylinder side to a plane

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 18, 2011, 23:55
Default Translate the pressure field on a cylinder side to a plane
  #1
New Member
 
Darren Zhang
Join Date: Nov 2011
Location: China
Posts: 20
Rep Power: 5
rockzh is on a distinguished road
The Geometry of the model is similar with a cylinder,and I get the pressure field on the side surface of the cylinder .For easier to analyse the 360 degree pressure field on the side ,how to make the pressure field be visual on a plane surface in CFX,or other Code(such as Tecplot)?
Thank you for your answer in advance!
rockzh is offline   Reply With Quote

Old   November 19, 2011, 11:54
Default
  #2
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,914
Blog Entries: 6
Rep Power: 38
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
This is one of the new features of Field View to unwrap the cylindrical surface to planer for visualization purposes.
Far is offline   Reply With Quote

Old   November 21, 2011, 22:20
Default
  #3
New Member
 
Darren Zhang
Join Date: Nov 2011
Location: China
Posts: 20
Rep Power: 5
rockzh is on a distinguished road
how to do this?
Anyone can give an idea?
rockzh is offline   Reply With Quote

Old   November 22, 2011, 05:47
Default
  #4
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,823
Rep Power: 85
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
I do not think you can do this in CFD-Post. But you can do most of the hard work by defining a variable theta which is the angle around the body, and exporting theta, z and you variable to a file. You can then load it in anything (matlab, excel if you must or any other plotting program) and plot it as a 2D plot of theta versus z.
ghorrocks is offline   Reply With Quote

Old   November 22, 2011, 06:08
Default
  #5
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,914
Blog Entries: 6
Rep Power: 38
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
Not possible in CFD-Post
http://www.ilight.com/fieldview12.3_whatsnew.pdf. Here you will find the feature known as unrolled cylindrical surfaces.
Far is offline   Reply With Quote

Old   November 22, 2011, 14:32
Default
  #6
Senior Member
 
Bruno
Join Date: Mar 2009
Location: Brazil
Posts: 236
Rep Power: 12
brunoc is on a distinguished road
Well,

If we're talking straight about surfaces of revolution than it might be possible to unwrap them using Turbo Post.

The down side is that you have to find equivalents for the turbo closed region (inlet, outlet, hub, shroud).
The up side is that if you don't have such regions you can provide Post with lines that represents them. These lines can be generated using polylines, for example.

If anyone claims this is not straightforward, I would totally agree. But if you don't have any other tool, than at least you have a way of plotting your data the way you want.

Cheers
brunoc is offline   Reply With Quote

Old   November 22, 2011, 17:31
Default
  #7
Super Moderator
 
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,823
Rep Power: 85
ghorrocks has a spectacular aura aboutghorrocks has a spectacular aura aboutghorrocks has a spectacular aura about
Quote:
Not possible in CFD-Post
? I explained how you can export the data in a format from CFD-Post which should be readable in any 2D plotting program. While actually doing the plot is not possible in CFD-Post you can get it to do most of the hard work. It should be reasonably straight forward.
ghorrocks is offline   Reply With Quote

Old   November 23, 2011, 01:50
Default
  #8
New Member
 
Darren Zhang
Join Date: Nov 2011
Location: China
Posts: 20
Rep Power: 5
rockzh is on a distinguished road
Thank you very much for every method.
I will try.
rockzh is offline   Reply With Quote

Reply

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
Problem with Gmsh nishant_hull Open Source Meshers: Gmsh, Netgen, CGNS, ... 19 Today 05:10
Calculation of the Governing Equations Mihail CFX 7 September 7, 2014 06:27
How to read pressure at discrete points paka OpenFOAM 15 July 21, 2008 05:03
order of magnitude analysis atit koonsrisuk Main CFD Forum 3 July 27, 2000 11:59
Using SIMPLE david Main CFD Forum 5 July 21, 1999 02:38


All times are GMT -4. The time now is 13:11.