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Re: PDE with two variables by NDSolve

  • To: mathgroup at smc.vnet.net
  • Subject: [mg94603] Re: PDE with two variables by NDSolve
  • From: "D. Grady" <D.C.Grady at gmail.com>
  • Date: Wed, 17 Dec 2008 06:34:25 -0500 (EST)
  • References: <gi5jdq$phm$1@smc.vnet.net>

It looks like NDSolve is designed to only work with initial value
problems.  There's a note in the documentation under NDSolve /
Possible Issues/ Partial Differential Equations that doesn't work with
Laplace's equation, and in the tutorial/NDSolveOverview you can read
more about the methods NDSolve uses; none of them are for elliptic
equations.

One way you could try to work around this is to add a time variable to
your problem, specify some initial condition, and see if the solution
relaxes to a steady state.  This is kind of clumsy, but it might be
worth a shot.

-Daniel


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