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

Search Results

Register Blogs Community New Posts Updated Threads Search

Showing results 1 to 6 of 6
Search took 0.01 seconds. Search: Posts Made By: ngrube
Forum: Main CFD Forum March 20, 2009, 16:11
Replies: 10
Views: 2,167
Posted By ngrube
Problem seems to be with WENO, not RK

Well, I've coded a TVD RK scheme and get almost identical results. I would say that my problem is with trying to use WENO for this.
Forum: Main CFD Forum March 20, 2009, 08:28
Replies: 10
Views: 2,167
Posted By ngrube
Thanks, Jed, for those very helpful references...

Thanks, Jed, for those very helpful references and for cluing me in to the term "SSP." As you say, it is true that WENO isn't TVD of course. I was just hoping that the time integration was...
Forum: Main CFD Forum March 19, 2009, 16:00
Replies: 10
Views: 2,167
Posted By ngrube
TVD low-storage Runge-Kutta

Got it. Thanks. For anyone else who is interested, the reference is

Total Variation Diminishing Runge-Kutta Schemes
by Sigal Gottlieb and Chi-Wang Shu
Mathematics of Computation vol 67,...
Forum: Main CFD Forum March 19, 2009, 14:25
Replies: 10
Views: 2,167
Posted By ngrube
Time integration

It just occurred to me that if I end up with twice as many shocks as I should have, then the total variation is not diminishing. I have been using a Williamson 3rd order low-storage Runge-Kutta...
Forum: Main CFD Forum March 19, 2009, 10:16
Replies: 10
Views: 2,167
Posted By ngrube
Leveque

Thanks for your reply.

No, I have not tried lower order shock capturing on it. I need high order since this code will be used for turbulence. This case is just a test case I wanted to use to...
Forum: Main CFD Forum March 18, 2009, 23:58
Replies: 10
Views: 2,167
Posted By ngrube
WENO for traveling/steepening acoustic wave

Hello,

I am puzzled by the failure of a well debugged and validated WENO finite difference code in the case of a traveling acoustic wave propagating over a long distance. I expected the...
Showing results 1 to 6 of 6

 
Forum Jump

All times are GMT -4. The time now is 10:19.

Contact Us - CFD Online - Privacy Statement - Top