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- Path: sparky!uunet!psinntp!curly.appmag.com!pa
- From: pa@curly.appmag.com (Pierre Asselin)
- Newsgroups: sci.math.num-analysis
- Subject: Re: Having trouble with FEM functional
- Message-ID: <1350@curly.appmag.com>
- Date: 28 Dec 92 20:47:53 GMT
- References: <1992Dec26.221924.1@woods.ulowell.edu>
- Organization: Applied Magnetics, Goleta, CA
- Lines: 18
-
- In <1992Dec26.221924.1@woods.ulowell.edu> chakravaa@woods.ulowell.edu writes:
-
- >Good day,
- > I'm interested in solving a Diffusion equation problem using FEM.
- >[...]
- >I was having extreme difficulties in determining my course of action,
- >particularly in solving for adjoint operators in the equation.
-
- The equation is not self-adjoint. One way to proceed it is to
- discretize only the space part of the problem with finite elements.
- This leaves you with a system of coupled ordinary differential
- equations in time, wich you solve with finite differences. If you want
- unconditional stability for all time step sizes, you will need an
- implicit scheme. See Strang and Fix, chapter 7.
- --
-
- --Pierre Asselin, Magnetoresistive Head Engineering, Applied Magnetics.
- pa@appmag.com the usual disclaimers apply.
-