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

Define the motion of rigid-body CG using profiles!

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 24, 2004, 00:19
Default Define the motion of rigid-body CG using profiles!
  #1
ducvinh
Guest
 
Posts: n/a
Hi all, I have sucessfully use UDFs to define the motion of the rigid-body center of gravity. Now I want to use some experimental motion data to define the motion. The experimental data contain the x,y,z velocities and x,y,z angular velocities. The problem is which field names should I use to define these parameters in the .prof file. I tried something like vx,vy,vz,wx,wy,wz but it didn't work. So anyone can give me a hint to this problem? Thank you very much. ducvinh
  Reply With Quote

Old   September 30, 2004, 16:11
Default Re: Define the motion of rigid-body CG using profi
  #2
dipak
Guest
 
Posts: n/a
hi ducvinch,

I am also simulating similar kind of problem where i have the data of displacement vs. time. I can understand that i need to define rigid body motion through boundary profiles. Let me know if you get more information on it.

Can you please send me the UDF to define the rigid body motion?

Thanking you.

Dipak
  Reply With Quote

Old   October 2, 2004, 03:50
Default Re: Define the motion of rigid-body CG using profi
  #3
Karthick
Guest
 
Posts: n/a
Dear Deepak

I am also working on dynamic mesh problem only. But I am having the pressure differences across the face. I am trying to run the piston due to pressure difference across the faces using udf. But the problem is the velocity value is calculating, but when it is given to piston, it is not moving. What may be the reason for this? When I try to run the same model using constant velocity, it is moving.

Can you help me... Regards Karthick
  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
Moving mesh Niklas Wikstrom (Wikstrom) OpenFOAM Running, Solving & CFD 122 June 15, 2014 07:20
CEL code for simulating the equation of motion of a vibrating rigid body mohamadaliv CFX 11 October 19, 2011 05:30
Turbulent solver rigid body mechanics philippose OpenFOAM Running, Solving & CFD 53 July 16, 2011 14:35
UDF to define velocity, k, epsilon profiles at velocity-inlet aerospain FLUENT 0 July 8, 2011 08:14
how to define the motion of ic.engine valves handou FLUENT 3 April 4, 2005 09:27


All times are GMT -4. The time now is 06:28.