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

the numerical scheme for LES.

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 8, 2004, 21:29
Default the numerical scheme for LES.
  #1
John S
Guest
 
Posts: n/a
sir

some schemes are used to solve LES equations. such as full-explicit MacMarco scheme, 2-order upwind scheme, high-order upwind scheme, certain centered schemes. which is better for les? upwind scheme is dissipated. can i used 2-order upwind TVD scheme to solve les equations? should anybody tell me some referrence about supersonic circle cylinder. thx
  Reply With Quote

Old   March 11, 2004, 23:23
Default Re: the numerical scheme for LES.
  #2
versi
Guest
 
Posts: n/a
for supersonic flow past cylinder, bow shock will need robust scheme like TVD. But TVD is not good for LES due to its large dissipation and degeneration to 1st order at extrema. I guess your case may be treated fortunately by combination of shock-fitting + higher order finite difference scheme. But for more general cases, ENO, WENO, compact scheme, are more plausible choices, though they produce numerical osciilation at bow shock ,which may affect the flow transition, yet most domain is well resolved..
  Reply With Quote

Old   March 14, 2004, 08:52
Default Re: the numerical scheme for LES.
  #3
Bin Li
Guest
 
Posts: n/a
I just use second order upwind TVD scheme to compute les equations.should i regard this as MILES?
  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
Numerical viscosity due to the MUSCL and HLL coulpled scheme sonsiest Main CFD Forum 0 May 23, 2011 15:37
How to implement a numerical scheme by using UDF? Furui Xiong FLUENT 0 July 29, 2010 01:30
Numerical scheme in CFX ? sam CFX 1 November 18, 2004 17:25
problem about numerical scheme in LES. libin Main CFD Forum 4 July 1, 2004 04:32
numerical scheme ado Main CFD Forum 3 October 12, 2000 08:20


All times are GMT -4. The time now is 00:06.