Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2010

[Date Index] [Thread Index] [Author Index]

Search the Archive

solve partial differential equations with mathematica

  • To: mathgroup at smc.vnet.net
  • Subject: [mg106902] solve partial differential equations with mathematica
  • From: Dino <dinodeblasio at gmail.com>
  • Date: Tue, 26 Jan 2010 06:37:21 -0500 (EST)

Hello,
I'd like to solve the following partial differential equation with
Mathematica,

eqn = D[u[r, t], t] == d D[u[r, t], r, r] - k u[r, t]/r

by doing:

DSolve[{eqn, u[r, 0] == 0, u[0.000000001, t] == ui, u[\[Infinity], t]
== 0}, u[r, t], {r, t}]

d,k and ui are constants.

In DSolve i include also the boundary conditions but I am still not
able to solve it.
Do you have any suggestions for solving the problem?
Thanks very much for your help.
Dino.


  • Prev by Date: Re: simple question for mathematica tool
  • Next by Date: Re: Redshift Calcs in Mathematica 7+
  • Previous by thread: Sum and NSum problem
  • Next by thread: Re: solve partial differential equations with mathematica