Cool, thanks!

On Fri, Nov 22, 2019 at 4:24 PM Stogner, Roy H <royst...@ices.utexas.edu>
wrote:

>
> On Fri, 22 Nov 2019, Renato Poli wrote:
>
> > I am alternatively considering a global L2 Glaerkin mapping.
> >
> > Something like - find f_i where:
> >         f(x,y)=f_i \phi_i   (new mesh)
> >         g(x,y)                  (function evaluated in the old mesh)
> >         \int f(x,y) \phi dA = \int g(x,y) \phi dA
> >
> > It make take more time,
>
> It may take more CPU time but I bet it'll be *much* cheaper in
> programmer-hours.
>
> > but it looks safe ... doesn't it?
>
> That depends on your problem and your formulation, I think.  Global
> projections can be a great way to maintain conservation, but they're
> prone to "ringing" artifacts, and either one of those factors can be
> critically important or nearly inconsequential depending on what
> you're solving and how.
> ---
> Roy

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