FEM2D_POISSON_SPARSE_BAFFLE is a MATLAB library which defines the geometry and other data for the "baffle" problem, a rectangular region with 13 hexagonal baffles. The problem is suitable for solution by fem2d_poisson_sparse.
The region is a rectangle with lower left corner (0.0,1.0) and upper right corner (12.0,7.0). The mesh was created using MESH2D, with a maximum element size of 0.5. The mesh comprises 512 nodes and 874 elements.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
FEM2D_POISSON_SPARSE_BAFFLE is available in a C++ version and a FORTRAN90 version and a MATLAB version.
FEM2D_POISSON_SPARSE, a MATLAB program which solves the steady (time independent) Poisson equation on an arbitrary 2D triangulated region using MATLAB's sparse solver.
FEM2D_POISSON_SPARSE_ELL, a MATLAB library which defines the geometry of an L-shaped region, as well as boundary conditions for a given Poisson problem, and is called by fem2d_poisson_sparse as part of a solution procedure.
FEM2D_POISSON_SPARSE_LAKE, a MATLAB library which defines the geometry of a lake-shaped region, as well as boundary conditions for a given Poisson problem, and is called by fem2d_poisson_sparse as part of a solution procedure.
TRIANGULATION_ORDER3_CONTOUR, a MATLAB program which makes a contour plot of scattered data, or of data defined on an order 3 triangulation. In particular, it can display contour plots of scalar data output by fem2d_poisson, fem2d_poisson_sparse or fem2d_poisson_cg.
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