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

chart problem please help

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 30, 2012, 06:17
Default chart problem please help
  #1
New Member
 
jayanth joseph
Join Date: Aug 2012
Posts: 3
Rep Power: 14
jayanth1990 is on a distinguished road
hi guys i just did a aerodynamic analysis using cfx
i used inlet velocity as 16 m/s

i have obtained results such as drag and lift force, coefficent using suitable expressions.

in the post processor CFD POST
i just want a plot of the drag,lift forces vs velocity
and drag and lift coefficients vs velocity


when i try to do this im asked for a data series i create a line like the ones that are given in the tutorial but still

i am unable to choose these variables which i have defined as they do not appear in variable drop down list boX


When i check in the conservative variable box
another large list of variables appears but the ones i have defined are not to be found

another doubt is that it says Forces can be calculated only in planar areas , so can i give a plane as a data series

please do help me out im relatively new to cfx and i need the graph for a report which has to submitted as quick as possible



thank you
jayanth1990 is offline   Reply With Quote

Old   October 31, 2012, 12:38
Default
  #2
Senior Member
 
Erik
Join Date: Feb 2011
Location: Earth (Land portion)
Posts: 1,185
Rep Power: 23
evcelica is on a distinguished road
You have created expressions, but have you created variables from the expressions? that may help.

I don't think you can specify a plane as a data series. But if you think about it, of course a force has to be integrated over an area, but you can normalize it and plot pressure along your line instead of force (pressure = force per unit area)

What is the Velocity you are plotting against? I see you are running only 1 simulation.
evcelica is offline   Reply With Quote

Reply

Tags
chart count, drag, expressions, problem, variable properties

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
UDF compiling problem Wouter Fluent UDF and Scheme Programming 6 June 6, 2012 05:43
Problem in implementing cht tilek CFX 3 May 8, 2011 09:39
Adiabatic and Rotating wall (Convection problem) ParodDav CFX 5 April 29, 2007 20:13
Problem in CFX5POST Chart function. windhair CFX 2 September 20, 2004 08:49
Is this problem well posed? Thomas P. Abraham Main CFD Forum 5 September 8, 1999 15:52


All times are GMT -4. The time now is 07:05.