CFD Online Logo CFD Online URL
Home > Forums > FLOW-3D

Pressurizing Incompressible Fluid

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

LinkBack Thread Tools Display Modes
Old   April 26, 2009, 16:36
Default Pressurizing Incompressible Fluid
New Member
Atul Verma
Join Date: Apr 2009
Location: Bangalore
Posts: 17
Rep Power: 10
atulverma is on a distinguished road
I am trying to pressurize fluid(Incompressible) in a piston cylinder arrangement using the Coupled Motion option of Flow3d but the fluid is automatically compressed and the piston moves down as such the fluid is compressible.
Is there any other way to pressurize the fluid as I want to see feeding of shrinkage(during solidification)?
Atul Verma
atulverma is offline   Reply With Quote

Old   April 26, 2009, 22:47
Senior Member
michael barkhudarov
Join Date: Mar 2009
Posts: 332
Rep Power: 11
MuxaB is on a distinguished road
The only way to do it is to 1. use the Dynamic shrinkage model, where all flow equations are solved, and 2. use a coupled-motion GMO component compressing the fluid by its own weight or under a force, rather than a prescribed velocity GMO.

Keep in mind that a GMO object does not interact with solidified metal, i.e., goes through solidified metal with no resistance, so you need to keep metal liquid in the immediate vicinity of a GMO component to get reasonable results.

MuxaB is offline   Reply With Quote


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
Jump conditions - incompressible fluid flow momentum_waves Main CFD Forum 1 August 18, 2007 09:50
What is the total energy for incompressible fluid? Harry Dong Main CFD Forum 12 February 4, 2006 01:55
Initial cinditions for incompressible fluid Vladimir Fuka Main CFD Forum 3 December 23, 2005 11:45
internal steady incompressible inviscid fluid flow Nina Shokina Main CFD Forum 0 October 21, 2003 06:11
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11

All times are GMT -4. The time now is 12:31.