Help, in comsol how to set a perfect plane wave (3D)?

AI Thread Summary
In the discussion about setting a perfect plane wave in COMSOL for 3D scattering simulations, the user describes their setup involving a cubic configuration surrounded by Perfectly Matched Layer (PML) boundaries. They have configured an interior boundary with a Transition Boundary Condition and set an x-polarized plane wave propagating along the z-direction. The user seeks advice on the appropriate boundary condition for the z-direction, questioning whether to use Perfect Electric Conductor (PEC), Perfect Magnetic Conductor (PMC), or another option. Additionally, they inquire if their method of setting the incident plane wave is correct. The conversation emphasizes the importance of boundary conditions in accurately simulating wave propagation.
jackie_young
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Hello everyone,

I am recently doing some 3D scattering simulation. I use a plane wave as the illumination field,specifically i set a cubic configuration surrounded by PML. I chose one interior boundary and set it as Transition Boundary Condition and set the Ex=1 (x-polarized plane wave propagating along z direction). I also set the outmost boundary as PEC (perpendicular to Ex) and PMC (perpendicular to Hy). I have two questions in fact:

(1) what boundary condition should i set in the Z direction (along the incident beam),PMC?PEC? or others ?

(2) whether i am right to set the incident plane wave in such a way ?

Thanks a lot !:smile:
 
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We have several prior threads that can help you.
https://www.physicsforums.com/search/25855/?q=comsol++plane+wave&o=relevance
 
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