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

Parabolic profile.

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

Reply
 
LinkBack Thread Tools Display Modes
Old   October 19, 2013, 05:30
Default Parabolic profile.
  #1
New Member
 
Nithish
Join Date: Sep 2013
Location: Erlangen,Germany
Posts: 20
Rep Power: 3
nithishgupta is on a distinguished road
Hello,

I am new to open foam,i made a geometry for a rectangular duct in Blockmesh dict.With all fixed walls.I need parabolic velocity profile for my rectangular duct.Can any one help me with this

Attached are the files for P and U.Here i am using laminar icoFoam solver.

nithishgupta is offline   Reply With Quote

Old   October 20, 2013, 03:31
Default
  #2
Senior Member
 
Ahmed Khattab's Avatar
 
ahmed
Join Date: Feb 2010
Posts: 161
Blog Entries: 1
Rep Power: 7
Ahmed Khattab is on a distinguished road
i understood that you want such profile as input for solver. you have three options.
1-using groovy BC.
2- using polynomial BC (i am not about it ).
3- using another software to give you values of velocity at each height for your profile,but number of points must be equal for number of cells in y direction in your mesh. also number of cells in z direction must be one. then use nonuniform instead of uniform in velocity bc at your inlet.

ex:
inlet
type fixedValue;
value nonuniform
number of cells
(
values each on in single line
);
Ahmed Khattab is offline   Reply With Quote

Old   October 20, 2013, 10:59
Default parabolic profile
  #3
New Member
 
Nithish
Join Date: Sep 2013
Location: Erlangen,Germany
Posts: 20
Rep Power: 3
nithishgupta is on a distinguished road
I thank you for the reply,

But you mentioned other software,do you mean ansys fluent ?
nithishgupta is offline   Reply With Quote

Old   October 20, 2013, 11:49
Default Groovy bc
  #4
New Member
 
Nithish
Join Date: Sep 2013
Location: Erlangen,Germany
Posts: 20
Rep Power: 3
nithishgupta is on a distinguished road
But i am not sure how to implement groovy bc for laminar solver(Icofoam),could you please guide me through this ?
nithishgupta is offline   Reply With Quote

Old   October 20, 2013, 13:44
Default
  #5
Senior Member
 
Ahmed Khattab's Avatar
 
ahmed
Join Date: Feb 2010
Posts: 161
Blog Entries: 1
Rep Power: 7
Ahmed Khattab is on a distinguished road
Quote:
Originally Posted by nithishgupta View Post
I thank you for the reply,

But you mentioned other software,do you mean ansys fluent ?
no i mean software like excel. only software to give you values on some points for your equation.
Ahmed Khattab 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
Parabolic velocity profile at vertical entrance ztp911 FLUENT 2 September 3, 2013 06:10
parabolic velocity profile with fluctuations (groovyBC?) newOFuser OpenFOAM 17 July 15, 2013 17:27
Half parabolic profile for the velocity inlet adele FLUENT 4 July 19, 2012 11:43
IdeasUnvToFoam Bug amp Fix benru OpenFOAM Bugs 42 November 13, 2009 08:59


All times are GMT -4. The time now is 09:27.