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

Passive Scalars

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 9, 2010, 15:24
Default Passive Scalars
  #1
New Member
 
Nikhil Shastry Yelleswarapu
Join Date: Jul 2010
Posts: 5
Rep Power: 7
Nikhil Kumar is on a distinguished road
Hello,
I'm modeling CO2 diffusion in water. I was suggested to use passive scalars. I don't know how to set the value of the scalars. Can anyone help me with this?
Nikhil Kumar is offline   Reply With Quote

Old   December 27, 2010, 18:06
Default
  #2
New Member
 
Jeff
Join Date: Aug 2010
Posts: 11
Rep Power: 7
JPBodner is on a distinguished road
The passive scalar can represent any quantity you want. It's very generic. In your case, it can represent the concentration of CO2. So, if you want, you can normalize so your inlet concentration is 1.0, and your downstream is 0.0. Then the passive scalar will take on a value between 0.0 and 1.0. Or you can provide the quantity in some set of units like Molar.
JPBodner is offline   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
Passive scalars and Star-CCM+ Tim CD-adapco 1 May 19, 2008 11:04
star-ccm+ and passive scalars tomy CD-adapco 3 August 21, 2007 15:15
gradients of passive scalars Ulle CD-adapco 1 July 10, 2005 12:24
passive scalars CMB CD-adapco 2 February 16, 2004 10:46
passive scalars CMB CD-adapco 0 December 10, 2003 07:14


All times are GMT -4. The time now is 15:54.