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

Water-air interface

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

Reply
 
LinkBack Thread Tools Display Modes
Old   February 12, 2008, 22:24
Default Water-air interface
  #1
Ken
Guest
 
Posts: n/a
Dear all,

I am creating a 3d tank in CFX and hope to apply in current flow to the tank, and later some waves. Ultimately a cylinder will be placed in the tank to find the forces, etc. But firstly, i need to know how to let CFX knows that there is water and air in my geometry model. I saw CFX Tute 16 where they used volume fractions for the gas-air flow but i still do not understand how to apply that to my model.

Or is there another easier way out?

Hopefully you guys can help me out on this.

Thank You. Kwong
  Reply With Quote

Old   February 13, 2008, 14:48
Default Re: Water-air interface
  #2
UnderwaterAlex
Guest
 
Posts: n/a
Did you try the free surface flow over a bump tutorial? Check that one out, it has air and water. To answer your question, you change the parameter "fluid list" under Domainefault Domain (assuming you haven't named your domain anything different) to include both air and water. You'll also need to initialize the domain with the appropriate values for air and water volume fraction using a step function in CEL. Definitely check out the free surface tutorial.

Hopefully that helps...

-Alex
  Reply With Quote

Old   February 19, 2008, 10:25
Default Re: Water-air interface
  #3
black jack
Guest
 
Posts: n/a
Leave it! Go for shopping!
  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
Wind turbine simulation Saturn CFX 45 February 8, 2016 05:42
Heat Transfer Coeff on the water air interface Anton Main CFD Forum 3 June 2, 2010 01:49
Setfields inoutlet and water and air patches erik023 OpenFOAM Pre-Processing 1 September 29, 2008 10:05
Help!!!problems in air jet into water bath kim FLUENT 4 June 9, 2003 07:04
Air and water simulation Mavinakere CD-adapco 1 February 27, 2002 23:35


All times are GMT -4. The time now is 04:15.