23 lines
1.2 KiB
HTML
23 lines
1.2 KiB
HTML
<a href="ex15.c.html"><h2>Example 15</h2></a>
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<p>
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This code solves a 3D electromagnetic diffusion (definite curl-curl) problem
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using the lowest order Nedelec, or "edge" finite element discretization on a
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uniform hexahedral meshing of the unit cube. The right-side corresponds to a
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unit force and we use uniform zero Dirichlet boundary conditions. The overall
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problem reads: curl alpha curl E + beta E = 1, with E x n = 0 on the boundary,
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where alpha and beta are piecewise-constant material coefficients.
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<p>
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The linear system is split in parallel using the SStruct interface with a n x n
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x n grid on each processors. Note that, the number of processors should
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therefore be a perfect cube!
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<p>
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This code is mainly meant as an illustration of using the Auxiliary-space
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Maxwell Solver (AMS) through the SStruct interface. It uses two grids -- one
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for the nodal and one for the edge variables, and we show how to constructs the
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rectangular "discrete gradient" matrix that connects them. Finally, this is
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also an example of setting up a finite element discretization in the SStruct
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interface, and we recommend viewing <a href="ex13.c.html">Example 13</a> and <a
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href="ex14.c.html">Example 14</a> before viewing this example.
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