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

Algebraic Grid Gen. TFI -> bug involved?

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 22, 2009, 08:07
Default Algebraic Grid Gen. TFI -> bug involved?
  #1
New Member
 
Join Date: Sep 2009
Posts: 1
Rep Power: 0
cfdprogrammer is on a distinguished road
Dear users,

I am developing a simple 2D algebraic mesh generator initially based on the TFI technique.

Given a convex quadrilateral of horizontal sides AB and CD, and vertical sides BC and DA, I have a strange result when the number of nodes on the AB is different with respect to that on BC.

If you look at the ref. images (1) and (2) in the link below, you will notice in (2) how the right-bottom corner moves down from its original position, giving an unwanted crooked lower edge when the number of subdivision on BC is 10 against the 20 on AB.

The result of Fig. (1) is correct and is obtained when AB and BC have equal number of elements.

Am I not understanding fully the concept of TFI or is there actually a bug in my code?

IMAGES HERE

Thank you very much in advance,
All the best
cfd
cfdprogrammer is offline   Reply With Quote

Reply

Tags
algebraic grid generation

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
Grid Block Interface / Algebraic Multigrid Harun CFX 0 August 5, 2007 16:06
On grid independent solution for pulsatile flow David FLUENT 4 June 8, 2005 16:20
Combustion Convergence problems Art Stretton Phoenics 5 April 2, 2002 05:59
Grid Independent Solution Chuck Leakeas Main CFD Forum 2 May 26, 2000 11:18
Algebraic Multigrid for nonuniform grid Joshua Lee Main CFD Forum 4 March 16, 2000 14:05


All times are GMT -4. The time now is 13:10.