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

Transient Velocity Inlet for an airfoil !

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 10, 2010, 16:17
Default Transient Velocity Inlet for an airfoil !
  #1
New Member
 
Maxime
Join Date: Apr 2010
Posts: 19
Rep Power: 7
Titasse is on a distinguished road
Hi,

I am trying to simulate the flow around an airfoil with an oscillating velocity inlet. I wanna keep constant the velocity's value (10m/s) but modify the angle of attack [-8deg ; 8deg]

I used the tutorial about the Transient Velocity Inlet Profile for Flow in a Tube (http://202.118.250.111:8080/fluent/F...df/node230.htm).

So, i created two different files, one for the unsteady in x-direction and the other for the y-direction. The thing is, i can select only one file under Fluent.

If someone, would be able to help me.

Cheers,

Titasse
Titasse is offline   Reply With Quote

Old   May 11, 2010, 00:53
Default
  #2
New Member
 
Sowmya K
Join Date: Nov 2009
Posts: 22
Rep Power: 7
skris2009 is on a distinguished road
You need to read in 2 different vel profiles.
After doing this, when you set ur vel boundary condition, select 'components' and you can choose each of the vel profiles.
Hope this helps.
skris2009 is offline   Reply With Quote

Old   May 11, 2010, 11:13
Default
  #3
New Member
 
Maxime
Join Date: Apr 2010
Posts: 19
Rep Power: 7
Titasse is on a distinguished road
It is what i do, but i can compilate only one UDF file each time.
For exemple, i compilated the file in x-direction, i setted up in BC for x and after that i compilated the file in y-direction but my BC for x vanished.

Thank you for your help.

Titasse
Titasse is offline   Reply With Quote

Old   May 12, 2010, 11:06
Default
  #4
New Member
 
Sowmya K
Join Date: Nov 2009
Posts: 22
Rep Power: 7
skris2009 is on a distinguished road
I'm not too sure if what you are saying is right, coz I've complied multiple UDFs for a single case file.
Since you just need a velocity profile, instead of a UDF can you use read a profile file? (Read-> Profile) Coz this I know for sure works. See Fluent manual for the profile file format.
Hope this helps.
skris2009 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 inlet velocity profile mismatch with Fluent ChristineL Fluent UDF and Scheme Programming 10 June 24, 2013 06:10
Problem with assigned inlet velocity profile as a boundary condition Ozgur_ FLUENT 2 August 3, 2012 05:54
VOF Volume fraction in Velocity inlet aruelle FLUENT 1 March 18, 2010 12:53
time varying inlet velocity Zhe Liu CFX 0 July 31, 2008 06:56
velocity more than INLET velocity neu FLUENT 3 May 13, 2003 04:56


All times are GMT -4. The time now is 05:08.