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

Conservative finite difference scheme?

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   October 10, 2002, 07:22
Default Conservative finite difference scheme?
  #1
Linfeng BI
Guest
 
Posts: n/a
Hi all, I am developing a LES code firstly to compute a back-facing step problem using finite difference method. But I simply cannot keep the flux the same value at cross sections before and after the step. Though not very large, there always exists this difference. I guess it is the FD scheme that causes this problem. And some other reasons?

So what i want to know is how to build up a conservative FD scheme for NS equations(as well as filtered NS eqns)--for mass, momentum and energy. Is there any general remarks or constrains when building such schems?

Thanks, Linfeng
  Reply With Quote

Old   October 10, 2002, 12:17
Default Re: Conservative finite difference scheme?
  #2
frederic felten
Guest
 
Posts: n/a
Hi there,

check out the following papers:

[1]- Morinishi, Lund, Vasilyev and Moin, "Fully conservative Higher Order Finite Difference Schemes for Incompressible flow", Journal of Computational Physics, Vol 143, pp 90-124, 1998.

[2]- Vasilyev, "Higher Order finite difference schemes on non-uniform meshes with good conservation properties", Journal of Computational Physics, Vol 157, pp 870-891, 2000.

[3]- Felten and Lund "Critical comparison of the collocated and staggered grid arrangements for incompressible turbulent flows", Proceedings of the 3rd AFOSR International Conference on DNS/LES, Arlington, Tx, Aug. 5th-9th 2001.

You can actually download [1] and [3] from my website: http://aero.uta.edu/~felten/resume/resum.html, and for [2] go to http://les.colorado.edu/~vasilyev/Pu...high-order.pdf

Reference [3] is currently being reworked and will be submitted soon to the JCP. A link on my website will create such that a preprint can be downloaded!!

I hope this helps, sincerely,

Frederic Felten.
  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
Finite element vs. finite difference Francisco Saldarriaga Main CFD Forum 23 December 17, 2014 08:21
quick scheme in finite difference method ps Main CFD Forum 2 June 23, 2008 02:02
Which Finite Difference Scheme to use? Frank Main CFD Forum 8 March 28, 2007 11:28
Finite Volume WENO Scheme DSS Main CFD Forum 3 January 15, 2007 03:47
Fininte difference and Finite element Technique Mahendra Singh Mehra FLUENT 3 December 22, 2005 23:49


All times are GMT -4. The time now is 17:39.