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

Difference between facet average and area-weighted average

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

Like Tree1Likes
  • 1 Post By wiebe

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   September 17, 2009, 11:49
Default Difference between facet average and area-weighted average
  #1
New Member
 
Dezhi Zheng
Join Date: Sep 2009
Posts: 8
Rep Power: 16
zdz198728 is on a distinguished road
Hi, guys, I have a project need to show wall temperature on wall. The area -weighted average give 500K, however, facet average give the temperature over 1000K. Could you help me to explain the difference between each other. Which one should I use?
zdz198728 is offline   Reply With Quote

Old   September 18, 2009, 07:36
Default
  #2
New Member
 
Wiebe Zoon
Join Date: Mar 2009
Posts: 10
Rep Power: 17
wiebe is on a distinguished road
Quote:
Originally Posted by zdz198728 View Post
Hi, guys, I have a project need to show wall temperature on wall. The area -weighted average give 500K, however, facet average give the temperature over 1000K. Could you help me to explain the difference between each other. Which one should I use?
Hi,

This depends on what you want. The 'facet average' just sums up the temperatures of all facets on your wall and divides by the number of facets, regardless of the size of these facets. the area weighted average multiplies the temperature of each facet by its area, sums everything up, and divides by the area of the wall.

In your case you probably have a hot spot on your wall with small facets, hence the difference.

Kind regards,
Wiebe.
kartikkhanna likes this.
wiebe is offline   Reply With Quote

Old   September 18, 2009, 13:22
Default
  #3
New Member
 
Dezhi Zheng
Join Date: Sep 2009
Posts: 8
Rep Power: 16
zdz198728 is on a distinguished road
Thank you very much! I think your answer helps.
zdz198728 is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Area weighted or mass weighted average SAM Main CFD Forum 31 April 30, 2018 04:12
Diffference between mass weighted average and Area giogio FLUENT 9 March 6, 2018 08:24
Facet, Area and Mass Average in Fluent Tushar FLUENT 0 February 5, 2009 23:55
Area weighted average ashish FLUENT 1 April 12, 2005 18:02
area weighted average Sireesha Pasari FLUENT 1 April 4, 2004 13:06


All times are GMT -4. The time now is 21:43.