Re: [FLASH-USERS] 2D gravity

Mateusz -

Speaking for Dan, it should not be terribly difficult to update any
multigrid solvers but there is simply not enough time for doing this
before the next code release.

As always we would be happy to help anyone willing to lead an effort
of modifying operators to accomodate additional geometries, especially
in case there are projects demanding them and timelines are short.

Tomek

--
On Wed, Aug 18, 2004 at 03:57:38PM -0600, Mateusz Ruszkowski wrote:
> 
> Dan,
> 
> thanks for info. None of the geometries mentioned in your e-mail are
> appropriate for my problem. Ideally I would need 2D cylindrical (r,phi) or
> 2D cartesian. Is it difficult to upgrade FLASH to consider either of these
> two cases ?
> 
> Mateusz
> 
> On Wed, 18 Aug 2004, Dan Sheeler wrote:
> 
> > The only new gravity support (for the multigrid solver) in the next
> > release will be for 2d cylindrical axisymmetric isolated boundary
> > conditions.  Also, 2d spherical will be newly supported in the multipole
> > solver.
> >
> > Is it 2d cartesian isolated boundary conditions that you'd like?
> >
> > Dan
> >
> > On Wed, 18 Aug 2004, Mateusz Ruszkowski wrote:
> >
> > >
> > > Hi All,
> > >
> > > is there any plan to include 2D gravity in the next release of FLASH ?
> > > Current version of gravity uses standard Green's function, whereas
> > > intrinsically 2D problems have G \propto ln(r). The problem cannot be
> > > easily solved just by modifying Green's function as FFT solvers work only
> > > for the case of one top level block.
> > >
> > > thanks,
> > > Mateusz
> > >
> >
> > --
> >  --
> > Dan Sheeler
> > ASCI Flash Center
> > sheeler@flash.uchicago.edu
> > (773) 834-3236
> >
-- 
Wed, 17:12 CDT (22:12 GMT), Aug-18-2004
_______________________________________________________________________________
   Tomasz Plewa                                      www:   flash.uchicago.edu
   Computational Physics and Validation Group        email: tomek@uchicago.edu
   The ASC FLASH Center, The University of Chicago   phone: 773.834.3227
   5640 South Ellis, RI 475, Chicago, IL 60637       fax:   773.834.3230
_______________________________________________________________________________