Re: polar coordinate singularity

[Barry Smith <bsmith@xxxxxxxxxxx>]

  A simple check in google of finite differences polar singularity
gave lots of possible references. One near the top that may be
relevent was http://enstrophy.colorado.edu/~mohseni/PSpdf/MyPapers/JCP2000.pdf

  PETSc itself doesn't address the nitty-gritty details of differencing schemes
so I don't think has any particular tool to help manage the differencing.

   Barry


On Tue, 9 May 2006, Sean Dettrick wrote:

> Hi,
> I am solving Poisson's equation
> Div. Grad(Phi)=rho
> in the (R,Theta) plane with KSP, and it is working well if I avoid the axis. 
> But I would like to put a point at R=0.   Is there a recommended way to do 
> that?
> Thanks,
> Sean