I thinking about that. I was using one document in which I picked up this example. As you can in the attached file I sent to you there is non boundary conditions for phi and I think may be the problem should be there. I have check every where in the document I have, they have not mentioned initial conditions, sure they forgoted to mentioned them. Daniel according to plot in the attached file, I want to try or I guess these boundary conditions:
phi=0.9 at x=0 phi=0.3 at x=1 and other values of phi (the approximations) are in between. we can try these boundaries. if this not work, I will join by the week end the author to know if there are other boundary conditions or if he just forgot it. Regards 2008/8/28 Daniel Wheeler <[EMAIL PROTECTED]> > > What should are the boundary conditions for phi? > > On Tue, Aug 26, 2008 at 1:58 PM, franck kalala > <[EMAIL PROTECTED]> wrote: > > Thanks Jonathan for your hint, it was very helpfully for me and I don't > have > > that error message, > > But i have some strange plot, the value of phi at left and right are very > > huge in contradiction of the initial value of phi. and the plot of p > still a > > straight line at value 1 and the plot of phi must be between o and 1. but > > this is not the case, may you try jonathan to run my code and try to see > > what happened. > > > > -- > Daniel Wheeler > > -- *********************************************** *********************************************** Franck Kalala Mutombo [EMAIL PROTECTED] African Institut for Mathematical Sciences, Muizenberg Cape Town, South Africa [EMAIL PROTECTED] ************************************************ ************************************************
