Re: upwind scheme in Mathematica?
- To: mathgroup at smc.vnet.net
- Subject: [mg103058] Re: upwind scheme in Mathematica?
- From: Mark Fisher <particlefilter at gmail.com>
- Date: Sun, 6 Sep 2009 07:37:21 -0400 (EDT)
- References: <h7ijqk$i83$1@smc.vnet.net> <h7tbhd$fv7$1@smc.vnet.net>
On Sep 5, 5:37 am, Santhosh <santhosh... at gmail.com> wrote: > On Sep 1, 2:51 am, Santhosh <santhosh... at gmail.com> wrote: > > > hi all, > > > I am trying to solve convection-diffusion-reactions(in time and one > > space coordinate) equations with NDSolve. Most of the time I am not > > getting solution to my problem as solver fails to converge. I guess > > the problem is very stiff and convection dominated. When I useupwind > > difference scheme in fortran, I get the solution easily. How can useupw= in= > din NDSolve? > > What is the method mathematica uses to solve pdes? > > > any comments are welcome. > > > Thanks in advance. > > I am still looking of answer! Mathematica uses the method of lines to solve pdes numerically. To read about it, paste "tutorial/NDSolvePDE" (without the quotes) into the search box in the help system. (I don't know anything about upwind methods.) --Mark