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

Velocity contours

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 19, 2010, 23:38
Default Velocity contours
  #1
Senior Member
 
Mohsin Mukhtar
Join Date: Mar 2010
Location: South Korea
Posts: 249
Rep Power: 8
Mohsin is on a distinguished road
Hello

I am simulating the cyclone. After convergence when i check the velcoity contours of axial and tangential velocity all over my domain (inlcuding walls, middle plane, horizontal plane in the middle everywhere) the tangential and axial velocities are coming as 0.

I have specified velocity magnitude in the boundary conditions.

Could anyone explain?Thanks
Mohsin
Mohsin is offline   Reply With Quote

Old   August 20, 2010, 04:01
Default
  #2
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 2,972
Rep Power: 30
-mAx- will become famous soon enough
If you specified velocity Magnitude in Inlet-velocity BC-Panel, then the vector points normal to the surface.
You can display pathlines from your inlet for checking if flowfield is in accordance to your wish
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   August 20, 2010, 04:37
Default
  #3
New Member
 
Join Date: May 2009
Posts: 8
Rep Power: 8
Byron is on a distinguished road
Quote:
Originally Posted by Mohsin View Post
Hello

I am simulating the cyclone. After convergence when i check the velcoity contours of axial and tangential velocity all over my domain (inlcuding walls, middle plane, horizontal plane in the middle everywhere) the tangential and axial velocities are coming as 0.

I have specified velocity magnitude in the boundary conditions.

Could anyone explain?Thanks
Mohsin

Do the other parameters of fluid field right?
I guess that the other parameters are also wrong,such as temperature,pressure.You should check them .
If it is , the only explain is that your compution was wrong.
PS,you could monitor a fixed point in fluid field duiring the simultion.Residual is not a good sign to judge the convergence.
Byron is offline   Reply With Quote

Old   August 20, 2010, 04:50
Default
  #4
Senior Member
 
Mohsin Mukhtar
Join Date: Mar 2010
Location: South Korea
Posts: 249
Rep Power: 8
Mohsin is on a distinguished road
yap thank you byron

All other parameters are absolutely fine (surface monitors, residuals, mass flux).
Mohsin is offline   Reply With Quote

Old   February 22, 2015, 08:59
Default
  #5
New Member
 
aah
Join Date: Mar 2013
Posts: 13
Rep Power: 4
sutiut is on a distinguished road
Hello Dear Moshin,
I have the same problem as you. I can not generate radial & tangentical velocity contours, right.
Could you?
please explain your method.
thanks,
sutiut 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
UDF error - parabolic velocity profile - 3D turbine Zaqie Fluent UDF and Scheme Programming 8 May 11, 2014 08:34
how to compute relative velocity from absolute? spk Main CFD Forum 3 July 9, 2010 08:42
Neumann pressure BC and velocity field Antech Main CFD Forum 0 April 25, 2006 02:15
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11
what the result is negatif pressure at inlet chong chee nan FLUENT 0 December 29, 2001 06:13


All times are GMT -4. The time now is 14:32.