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

How the grading is calculated

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

Reply
 
LinkBack Thread Tools Display Modes
Old   December 3, 2010, 06:47
Default How the grading is calculated
  #1
Senior Member
 
Rickard
Join Date: May 2010
Location: Lund, Skåne, Sweden
Posts: 143
Rep Power: 7
Rickard.Solsjo is on a distinguished road
If I use 10 cells and 10 cm together with a stretching lets say 2
All cells are initially 1 cm each. Will the smallest cell be 1/2 cm or is it calculated in some other way?

Thx
R
Rickard.Solsjo is offline   Reply With Quote

Old   December 3, 2010, 08:34
Default
  #2
Senior Member
 
Bernhard
Join Date: Sep 2009
Location: Delft
Posts: 790
Rep Power: 12
Bernhard is on a distinguished road
It is quite clearly explained in the user guide I think: http://www.openfoam.com/docs/user/bl...hp#x25-1440137
Bernhard is offline   Reply With Quote

Old   December 3, 2010, 09:16
Default
  #3
Senior Member
 
Rickard
Join Date: May 2010
Location: Lund, Skåne, Sweden
Posts: 143
Rep Power: 7
Rickard.Solsjo is on a distinguished road
We talked it over here and assumed they are using some kind of numerical summation
L = sum(n=0,N-1)x(1+n/(N-1)) where in the end we get
x = 2L/3N based on some kind of average in the middle
Rickard.Solsjo 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
blockMesh with double grading. spwater OpenFOAM Native Meshers: blockMesh 78 March 12, 2015 15:54
patch calculated inlet idrama OpenFOAM 3 November 16, 2010 05:56
simple question about calculated bc hyperion OpenFOAM 0 August 14, 2010 14:05
Grading other than simple and edge titio OpenFOAM Native Meshers: blockMesh 0 March 5, 2008 12:50
Mesh grading problem Y FLUENT 3 March 2, 2005 06:47


All times are GMT -4. The time now is 19:57.