explanation on boundary condition matrix
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Dany
le 17 Sep 2013
Commenté : Florian Baumgartner
le 3 Août 2015
where can i find an explanation about boundary condition matrix? especially what does each row in this matrix stands for. the documantation provided in the matlab help is not very clear.
thank you.
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Bill Greene
le 17 Sep 2013
Have you looked at this page?
There is a general description of the matrix format along with two examples.
If you are defining boundary conditions in a MATLAB script, my own preference (and recommendation) is to write a "boundary file" (user-written MATLAB function) to define your boundary conditions instead of trying to create a boundary matrix. I find writing a boundary condition function to be much more straightforward than writing a boundary matrix. The approach is documented here:
Bill
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Bill Greene
le 18 Sep 2013
The first argument to assempde (or pdenonlin, parabolic, etc) can be a function handle. For example:
b = @pdebound;
u=assempde(b, ...);
(Note, the function doesn't have to be named pdebound for this to work.)
Bill
Florian Baumgartner
le 3 Août 2015
When I have only Dirichlet boundary conditions, do I have to gibe "assempde" 4 matrixes (q,g,h,r) or just 2 matrixes (h,r) with the command
if true
b = @pdebund
u = assempde(b, ...)
end
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