CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Visualization & Post-Processing Software > Tecplot

tecplot 3D velocity contours inside a channel

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 14, 2010, 19:37
Default tecplot 3D velocity contours inside a channel
  #1
Member
 
Naveen
Join Date: Feb 2010
Location: Los Angeles
Posts: 65
Rep Power: 16
vetnav is on a distinguished road
Hi fellas,

I am trying to do something like this, lets say we have a 3D channel with square cross section and the flow enters with uniform velocity and become fully developed and finally ends up as a parabolic velocity profile (paraboloid in 3D).

I want to show the 3D contours of the stream wise velocity inside the 3D channel. The procedure I follow is I cut a slice at a constant X location (X being the stream wise direction and Y,Z are normal and span wise directions) so this slice (which is 2D surface) becomes ZONE2 I deactivate the ZONE1 (which is 3D channel), now in active ZONE2 I change the X-axis variable to u (which is stream wise velocity) and Viola I could see a paraboloid but if I want to put this paraboloid inside the 3D channel as one of the axis variables is changed when I activate the ZONE1 I don't see 3D channel geometry, its all get distorted.

So can anyone please tell me how to show the development of the flow inside a 3D channel flow using 3D contours of the velocity at different locations inside the channel.

Thanks
vetnav is offline   Reply With Quote

Old   July 14, 2010, 20:33
Default Frame control inside of Tecplot
  #2
Senior Member
 
Scott Rumage
Join Date: May 2009
Location: Seattle, WA
Posts: 152
Rep Power: 17
scott_rumage is on a distinguished road
Hello Vetnav,

I believe the solution to your dilemma is to open a new frame in Tecplot (because you have two different coordinate systems), and then superimpose the 2D surface “frame” back onto the 3D channel frame.
Here is a link on the Tecplot web site that explores this concept and may be helpful: http://www.tecplot.com/Training/PlotTips/FramesStreamtraceControl.aspx
Regards,
Scott
scott_rumage is offline   Reply With Quote

Old   July 14, 2010, 20:39
Default
  #3
Member
 
Naveen
Join Date: Feb 2010
Location: Los Angeles
Posts: 65
Rep Power: 16
vetnav is on a distinguished road
Dear Scott,

Thank you for the reply, but if I link the frames, if I change axes variables in one frame the other frame is also getting effected.

Thanks you
vetnav is offline   Reply With Quote

Old   July 14, 2010, 21:00
Default Iso-Surfaces
  #4
Senior Member
 
Scott Rumage
Join Date: May 2009
Location: Seattle, WA
Posts: 152
Rep Power: 17
scott_rumage is on a distinguished road
Okay, sorry for the ineffective suggestion. Does creating iso-surfaces of various velocities help you visualize the 3D velocity contour?
scott_rumage is offline   Reply With Quote

Old   July 14, 2010, 21:03
Default
  #5
Member
 
Naveen
Join Date: Feb 2010
Location: Los Angeles
Posts: 65
Rep Power: 16
vetnav is on a distinguished road
I tried plotting Iso-surfaces also but it is of no use.
vetnav 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
Velocity reduces in channel Rayan FLUENT 11 December 1, 2010 01:38
Velocity Contours sambayo FLUENT 2 October 12, 2009 05:49
Inlet Velocity in CFX aeroman CFX 12 August 6, 2009 19:42
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 10:11
on unconvincing results for channel flow simulatio yf yap Main CFD Forum 6 January 30, 2001 00:18


All times are GMT -4. The time now is 01:38.