boundary condition for NDSolve
- To: mathgroup at smc.vnet.net
- Subject: [mg45036] boundary condition for NDSolve
- From: Yama Masu <yamagomas at yahoo.co.jp>
- Date: Sat, 13 Dec 2003 06:06:46 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
I would like to solve membrane oscillation between two square shaped fixed boundaries
with NDSolve.
D[u[x, y, t], {t, 2}] == D[u[x, y, t], {x, 2}] + D[u[x, y, t], {y, 2}] + f[x, y, t],
where f is an external force.
The boundary condition for the outside square is given by
u[x, -1, t] == 0, u[x, 1, t] == 0, u[-1, y, t] == 0, u[1, y, t] == 0.
How can I give the boundary condition for the square inside?
I tried
If[y>-0.5 && y<0.5, u[0.5, y, t]==0] etc. but this didn't work.
Masu
- Follow-Ups:
- Re: boundary condition for NDSolve
- From: CAP F <Ferdinand.Cap@eunet.at>
- Re: boundary condition for NDSolve