AddPML

AddPML(mesh, numcells, <CoordSystem>)

Full definition:

mesh = AddPML( mesh, numcells, <CoordSystem>  )

Adds equidistant cells to the specified directions of the simulation area. This is used to put a PML (perfectly matched layer) absorber there. Remember: this function only adds space for the PML, the boundary conditions need to be set correctly to really add PML material.

The mesh is sorted and duplicate lines are removed.

input:

• mesh: mesh structure

• numcells: 1x6 vector (xmin,xmax,ymin,ymax,zmin,zmax) with number of cells to add to this direction

• CoordSystem (optional): set to 1 in case of cylindrical mesh using mesh.r, mesh.a and mesh.z

output:

• mesh: new mesh with the added lines

example:

% some fixed mesh lines
mesh.x = [-100 0 100];
mesh.y = [-100 0 100];
mesh.z = [0 500];
mesh = DetectEdges(CSX, mesh); %detect edges
mesh = SmoothMesh(mesh, c0/fmax/20/unit); % smooth the mesh

mesh = AddPML(mesh, 8); % add 8 lines to all directions
% or
mesh = AddPML(mesh, [0 0 0 0 8 8]); % add 8 lines in both z-directions

See also DefineRectGrid, SmoothMesh, DetectEdges

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Sebastian Held sebastian.held@uni-due.de