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Re: Crank Nikolson scheme for semi linear parabolic type equation
Posted:
Feb 15, 2013 7:41 AM


On 2/15/2013 2:27 AM, Sandeep Kumar wrote: > I am studying CahnHilliard equation which is a fourth order parabolic type equation and >wanted to implement this equation using numerical methods in MatLab. I am trying to >solve this with CrankNikolson scheme, but am not able to formulate the problem. >The equation contains a fourth order derivative( square of laplacian) and also > > The equation is: > del u/ del t =  epsilonsquare* laplacian^2*u+ laplacian(u^3)lapacian(u) > boundary conditions > Ux(0,t)=Ux(l,t)=Uxxx(0,t)=Uxxx(l,t)=0; > which after discretization become u(1,)=u(5,), u(2,)=u(4,), u(N,)=u(N4),u(N1,)=u(N3) > > Please help. >
This question has nothing to do with Matlab. Just becuase you are using Matlab to implement it, does not make it a Matlab question.
If I am going to use C, should I ask this in the C programming language newsgroup?
Why not use the correct forum. Try for example
http://scicomp.stackexchange.com/
good luck, Nasser



