Re: NDSolve Problems
- To: mathgroup at smc.vnet.net
- Subject: [mg67945] Re: NDSolve Problems
- From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
- Date: Tue, 18 Jul 2006 05:50:29 -0400 (EDT)
- Organization: Uni Leipzig
- References: <e9frkc$2m4$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi, NDSolve[] will switch automatical to a stiff initial value solver when it detect that the problem is stiff. Anyway, the advanced documentation link in the Help-Browser page will guide you to the advanced settings for the Method option. Regards Jens <wandering.the.cosmos at gmail.com> schrieb im Newsbeitrag news:e9frkc$2m4$1 at smc.vnet.net... | I'm solving a bunch of coupled ODEs with NDSolve and it keeps getting | stuck. I noticed that the solutions are highly oscillatory, which makes | me suspect there's numerical instability. Do I have a "stiff" system? | How do I tell, and if so what can I do? Is there any way I could | supress these rapid oscillations "by hand"? | | My equations are too complicated to write here, but if anyone could | point me to some good references on solving coupled ODEs with | Mathematica with lots of troubleshooting tips, I'd very much appreciate | it. | | Thanks! |