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

U.F.D. :Finite Differences on Unstructure grids

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 3, 1998, 11:54
Default U.F.D. :Finite Differences on Unstructure grids
  #1
STROHM
Guest
 
Posts: n/a
During my thesis I developped a way to make Finite Differences on Unstructured grid. The problem is that I found very few references on that subject. If anyone has some information on that topic, it would be very helpfull to me. THANKS IN ADVANCE.
  Reply With Quote

Old   August 4, 1998, 23:10
Default Re: U.F.D. :Finite Differences on Unstructure grids
  #2
H Dou
Guest
 
Posts: n/a
Can you describe your Finite Differences on Unstructure grids. I have experience about Finite Volume Method on Unstructured grids. Most used Finite Volume Methods on Unstructured grids are two types: 1. time marching( e.g. Jameson) 2. pressure based method(e.g. Patankar,Baliga)

What is the difference of your method from these?
  Reply With Quote

Old   August 5, 1998, 04:19
Default Re: U.F.D. :Finite Differences on Unstructure grids
  #3
STROHM
Guest
 
Posts: n/a
Contrary to Finite Volume Methods UFD doesn't use control volume nor integration of the equations. Like in structured grid, the starting point is the Taylor series expansions ; but here, the Taylor series are made over the space on points that may not be on line coordinates. Thus, any kind of partial differential equations can be discretized, like Navier-Stokes equations, heat transfert or Maxwell 's equations. Then, UDF are not particularly time marching related or pressure based.
  Reply With Quote

Old   August 5, 1998, 08:57
Default Re: U.F.D. :Finite Differences on Unstructure grids
  #4
xiaojian wang
Guest
 
Posts: n/a
you conducted an interested subject, I didn't know any refernces in this subject, hopefully after you finish your thesis, I can obtain one copy of it.

wang
  Reply With Quote

Old   August 6, 1998, 15:25
Default Re: U.F.D. :Finite Differences on Unstructure grids
  #5
Z.J. Wang
Guest
 
Posts: n/a
Hi,

You definitely have an interesting academic topic to study on. As you know, there aren't many people (if any) doing finite difference on unstructured grid.

There is, however, one very siminar idea in a paper published by Batina of NASA Ames several years back (92-93) on a gridless method. The method used a cloud of points to form the partial differential, which is idential to your idea in a sense. The paper was published as an AIAA paper. You probably could find it by searching the name of the author.

good luck

ZJ Wang CFD Research Corp.
  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
Finite Difference on unstructured grids ? DoHander Main CFD Forum 8 September 7, 2011 14:35
References for the finite volume method on unstructured grids old newbie Main CFD Forum 1 April 25, 2011 23:53
Finite volume solution methodology for Unstructured grids Dhileep T K Main CFD Forum 1 May 4, 2010 06:38
Multigrid for finite differences Enda Bigarelli Main CFD Forum 4 November 6, 2001 12:04
Finite differences Zdravko Stojanovic Main CFD Forum 8 March 24, 2001 22:31


All times are GMT -4. The time now is 01:13.