f



2D/3D reaction-diffusion solver

hiya,

is there anything for matlab that will solve a 2D/3D reaction-
diffusion problem?  I know of pdepe that does 1D, and pdetoolbox that
does 2D, but otherwise, would I have to write my own code?

thanks!
0
shawn2479 (9)
2/15/2011 2:44:13 AM
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On 2/14/2011 6:44 PM, shawn wrote:
> hiya,
>
> is there anything for matlab that will solve a 2D/3D reaction-
> diffusion problem?  I know of pdepe that does 1D, and pdetoolbox that
> does 2D, but otherwise, would I have to write my own code?
>
> thanks!

I just looked at pdetool, and it does not look it can
do 2D diffusion-reaction pde.

What are specs of your problem? domain, boundary conditions?
the pde?

May be I can you give you one of my matlab functions which solves
such problem if it matches what you want. I only have something for
unit square grid now.

--Nasser



0
Nasser
2/15/2011 4:13:26 AM
On Feb 15, 5:13=A0pm, "Nasser M. Abbasi" <n...@12000.org> wrote:

> I just looked at pdetool, and it does not look it can
> do 2D diffusion-reaction pde.
>
> What are specs of your problem? domain, boundary conditions?
> the pde?
>
> May be I can you give you one of my matlab functions which solves
> such problem if it matches what you want. I only have something for
> unit square grid now.
>
> --Nasser

Hi there

thanks for your reply!

I'm after solving on arbitrary domains - preferably with multiple
spatial scales (resolving nm and um  sized regions) with multiple
domains that have different diffusion coefficients.  So I think an
unstructured spatial discretization is necessary...  BC's are mostly
neumann flux with species' solution dependencies and some dirichlet or
robin conditions.  The pde itself is a coupled system of multiple
reactants, multiple source terms, etc...

shawn
0
shawn2479 (9)
2/16/2011 12:04:35 AM
On Feb 16, 1:04=A0am, shawn <sh...@math.auckland.ac.nz> wrote:
> On Feb 15, 5:13=A0pm, "Nasser M. Abbasi" <n...@12000.org> wrote:
>
> > I just looked at pdetool, and it does not look it can
> > do 2D diffusion-reaction pde.
>
> > What are specs of your problem? domain, boundary conditions?
> > the pde?
>
> > May be I can you give you one of my matlab functions which solves
> > such problem if it matches what you want. I only have something for
> > unit square grid now.
>
> > --Nasser
>
> Hi there
>
> thanks for your reply!
>
> I'm after solving on arbitrary domains - preferably with multiple
> spatial scales (resolving nm and um =A0sized regions) with multiple
> domains that have different diffusion coefficients. =A0So I think an
> unstructured spatial discretization is necessary... =A0BC's are mostly
> neumann flux with species' solution dependencies and some dirichlet or
> robin conditions. =A0The pde itself is a coupled system of multiple
> reactants, multiple source terms, etc...

Sounds like you need the 'real thing'.

You might want to be aware that matlab is like a leatherman tool
or a Swiss army knife of computing: It can do a lot with it, and
you are way better off with it than if you had no tools at all.
But if the task at hand is a bit more complex or a bit larger than
the most trivial stuff, you might be in over your head - you need
specialist's tools.

Your description of your problem indicates to me that you might
want to look beyond matlab, at specialist PDE solvers.

Rune
0
allnor (8509)
2/16/2011 4:45:50 AM
Reply:

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