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

Limters for 2D and 3D DG

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   August 26, 2008, 23:42
Default Limters for 2D and 3D DG
  #1
troy
Guest
 
Posts: n/a
Hi!

I'm writting a code for solving the 2D and 3D Euler equations of compressible flow.

I'm interested in steady state solutions and I have problems with the oscillations. Naca0012 was choiced as test example and the computation state is ma=0.8,alpha=1.25. The numerical flux is HLLC. I found that very strong spurious oscillations occur at shock wave. Then,I used slope limiter to limit the oscillations ,the oscillations was restricted perfectly ,the shock wave can captured by three points . But the limit need the function is linear,so I don't know how to apply the limiter to more high-order DG ,e.g. (p2,p3,&hellip,and I don't know whether the limit can adapt to 3D DG . Who can give me some suggestion about the limiter or provide new limiter.

Many thanks!

Reference : The Runge-Kutta Discontinuous Galerkin Method for Conservation Laqs V Author : Bernardo Cockburn and Chi-Wang Shu

  Reply With Quote

Old   August 27, 2008, 02:15
Default Re: Limters for 2D and 3D DG
  #2
p.k
Guest
 
Posts: n/a
MSN:dirac_euler@hotmail.com
  Reply With Quote

Old   August 27, 2008, 02:18
Default Re: Limters for 2D and 3D DG
  #3
p.k
Guest
 
Posts: n/a
TALK ON MSN FOR DETAILS dirac_euler at hotmail.com
  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



All times are GMT -4. The time now is 07:14.