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

Background fluid

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

Reply
 
LinkBack Thread Tools Display Modes
Old   May 12, 2004, 06:56
Default Background fluid
  #1
Andrea
Guest
 
Posts: n/a
Is possible set two different background fluid in the same simulation but in two different isolated block?

Thanks in advance

Andrea
  Reply With Quote

Old   May 12, 2004, 07:57
Default Re: Background fluid
  #2
test
Guest
 
Posts: n/a
If you are using CFX-5.6 you have to use a workaround. In CFX-5.7 you can create different domains with different fluid and different models too!

In CFX-5.6, define a multi-component mixture of the two fluid u want to define.

Use this multi-component fluid for both the domains. Only things u need to take care is boundary and initial conidition.

Use a step or subdomain function to make sure that particluar domain contains only that fluid. IN the boundary conditions (mainly inlet) make sure u specify the mass fraction of 1 for the appropriate fluid.

Let me know if u need further assistance.
  Reply With Quote

Old   May 12, 2004, 08:09
Default Re: Background fluid
  #3
Andrea
Guest
 
Posts: n/a
I'm a Cfx 4.4 user...
  Reply With Quote

Old   May 12, 2004, 11:59
Default Re: Background fluid
  #4
Andrea
Guest
 
Posts: n/a
In Cfx 4.4 I think I must define a multicomponent mixture.

The problem is that in the two different domain I have two different mixture.

So can I set my multicomponent mixture and "separate" the fluid. But I need have two different group of properties (viscosity, Cp...) for the two background fluid. I must set this properties by user fortran?

Thanks

Andrea
  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
Water subcooled boiling Attesz CFX 7 January 5, 2013 04:32
How to apply negtive pressure to outlet bioman66 CFX 5 June 3, 2006 01:40
doubt about background fluid in multico mixture... Giosuč CD-adapco 0 June 11, 2004 05:18
Terrible Mistake In Fluid Dynamics History Abhi Main CFD Forum 12 July 8, 2002 09:11
evaporation in liquid background fluid Achim CD-adapco 2 February 6, 2002 20:51


All times are GMT -4. The time now is 11:49.