CFD Online Logo CFD Online URL
Home > Forums > General Forums > Main CFD Forum

Vibratting sphere 3m/s upwards downards left right 2 dof

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

LinkBack Thread Tools Search this Thread Display Modes
Old   February 14, 2021, 22:47
Default Vibratting sphere 3m/s upwards downards left right 2 dof
New Member
Join Date: Feb 2021
Posts: 1
Rep Power: 0
shish99 is on a distinguished road
my model is an outer sphere enclosing an inner sphere, separated by fluid, so 2 walls and a fluid. My question is how can I vibrate the inner sphere at 3 m/s in the translation directions stated by arrows, while the inner sphere won't touch the outer sphere after vibrating. so the inner sphere should move upwards, downwards, left and right as if vibrating.
shish99 is offline   Reply With Quote

Old   February 20, 2021, 18:07
Senior Member
Join Date: Nov 2020
Location: Canada
Posts: 436
Rep Power: 8
aero_head is on a distinguished road
Using UDF as a boundary condition.
e.g. From user guide:
"#include" udf.h "
DEFINE_PROFILE (pressure_profile, t, i)
real x [ND_ND]; / * this will hold the position vector * /
real y;
face_t f;
begin_f_loop (f, t)
F_CENTROID (x f, t);
y = x [1];
F_PROFILE (f, t, i) = 1.1e5 - y * y / (. 0745 * .0745) * 0.1e5;
end_f_loop (f, t)
aero_head is offline   Reply With Quote


moving mesh

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
Force can not converge colopolo CFX 13 October 4, 2011 23:03
Problem with UDF compiling for kTkLW model Wantami FLUENT 0 July 18, 2011 06:11
How to install CGNS under windows xp? lzgwhy Main CFD Forum 1 January 11, 2011 19:44
CGNS lib and Fortran compiler manaliac Main CFD Forum 2 November 29, 2010 07:25
meshing F1 front wing Steve FLUENT 0 April 17, 2003 13:37

All times are GMT -4. The time now is 08:23.