Creating Geometry for PDE model
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I'm trying to create a 2-D domain for my PDE model. I've been using MATLAB's examples for Partial Differential Equation Toolbox as references, but none of them construct their own geometry.
What I'm trying to create is a rectangular domain which has the following specifications. X-domain: [-117.25, -117.0] and Y-domain: [32.55,33.03]
How could I do this to input into the geometryFromEdges() function?
Thank you!
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Sean de Wolski
2022-6-20
0 个投票
What about the doc example isn't sufficient for you? It literally creates a rectangle.
4 个评论
Thomas Rodriguez
2022-6-21
I guess I'm missing what the first example on that doc page is missing which takes geometry from a set of rectangular coordinates which is what you have. Hijacking the example to your x/y bounds:
xbnd = [-117.25, -117.0];
ybnd = [32.55,33.03];
R = [3,4,xbnd(1),xbnd(2),xbnd(2),xbnd(1),ybnd(1),ybnd(1),ybnd(2),ybnd(2)]';
g = decsg(R);
m = createpde;
m = geometryFromEdges(m, g)
pdegplot(m,"EdgeLabels","on")
Thomas Rodriguez
2022-6-21
Sean de Wolski
2022-6-22
I used the doc example opened with below and modified it to suit (i.e. didn't use the circle), but the definition of R in decsg is here: https://www.mathworks.com/help/releases/R2022a/pde/ug/decsg.html#bu_fft3-gd
openExample('pde/GeometryFromDecomposedSolidGeometryExample')
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