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Scattering boundary condition
Posted 16 mag 2012, 09:20 GMT-4 RF & Microwave Engineering, Modeling Tools & Definitions, Parameters, Variables, & Functions Version 4.2a, Version 4.3 1 Reply
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I'm trying figure out some optical properties of a dielectric structure, and I'm having problems using the scattering boundary condition. The model is in 2D, and for now I'm using the s-polarization. The scattering boundary condition includes an option to define the "Wave direction", or the k_dir variable. The default settings are 'emw.nx' and 'emw.ny'. What are these variables 'nx' and 'ny', where are they defined and can I access them somehow?
Thanks for help.
Hello Teemu Laakso
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The variables ewm.nx and emw.ny are the components of the normal to the boundary. It means that the Scattering Boundary Condition will launch/absorb waves propagating orthogonally to the boundary. Those variables are ultimately defined by the geometry, and can be plotted in an Arrow Line plot.
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Andrea Ferrario
Electromagnetics Group
COMSOL AB