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Help for Boundary condition

• To: mathgroup at smc.vnet.net
• Subject: [mg113655] Help for Boundary condition
• From: pratip <pratip.chakraborty at gmail.com>
• Date: Sat, 6 Nov 2010 05:00:17 -0500 (EST)

Dear Group,

I have a simple problem with NDSolve boundary condition. Here is a
file if anybody want to have a look. I have explained everything there.
<http://www.mediafire.com/?6bx4exs8m0rdbkb>

My problem is how to implement periodic boundary condition for MOL
discretization. If the boundary condition is u[t,0]==u[t,1]==0 then my
method works but for u[t,0]==u[t,1] it shows large artificial effect
on the MOL solution.
Though the test PDe is tough one but I cant figure uot how to get rid
of this problem.

I know this forum has got some PDE experts. This question is addressed
to them. I hope some of you can guide me on this.

Regards,

Pratip