CFD Online Logo CFD Online URL
Home > Forums > CD-adapco

age of air - transient calculation

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

LinkBack Thread Tools Display Modes
Old   July 11, 2008, 11:04
Default age of air - transient calculation
Posts: n/a
Hello, I need to calculate the age of air of the fluid exiting the domain in a transient calculation. Does the approach of setting up a passive scalar with source term = density work in transient as well?
  Reply With Quote

Old   July 14, 2008, 04:34
Default Re: age of air - transient calculation
Posts: n/a
Yes it does. A quick 2D inviscid test case in STAR-CCM+ could give you the confidence.

Just remember that you might need to clip the source term where tau is large in order to get convergence of the passive scalar.

Typically in STAR-CCM+ the FF syntax for the source term might look like:


  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
CONVERGENCE (transient calculation) mehrnaz FLUENT 2 March 8, 2004 03:55
transient calculation Philipp FLUENT 1 December 12, 2002 12:45
Transient calculation Zheng Yu CFX 4 October 29, 2001 07:31
transient calculation sanjib das sharma CFX 2 July 30, 2001 06:13
tiffs from transient calculation Frank FLUENT 1 May 8, 2000 16:40

All times are GMT -4. The time now is 18:16.