Menu

Discussion Forum

New Discussion
Filter

Note: This discussion is about an older version of the COMSOL Multiphysics® software. The information provided may be out of date.

Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.

Problem with PML+SCBC in the scattering in a dielectric slab

Posted Jan 21, 2014, 5:52 p.m. EST Low-Frequency Electromagnetics, RF & Microwave Engineering Version 4.3, Version 4.4 0 Replies

AG
Send Private Message Flag post as spam

Please login with a confirmed email address before reporting spam

I have the following problem: i want to study the total field pattern that occurs when an incident wave is impinging in an array of pattern drilled in a dielectric slab of index of refraction n for what i need a 3d calculation. However i found strange results in some situations.

To check the model, i took out the hole and calculated the scattering with a single dielectric slab. This model should have perfect transmision at w= lamda/(2 n), however, when i calculated i found an interference pattern in the total field as if the PML were not absorbing (though i do not have it clear if this is the problem.

I used a calculation for the scattered field as you see in the mph where I use SCBC in the x-y direction and PML in the top/bottom dimensions. Some of the limiting cases as n=1 and n=infinity works well...but somehow i don't know if I can trust my calculation any more. Using the same configuration in 2d everything works as expected.

--
A
0 Replies Last Post Jan 21, 2014, 5:52 p.m. EST
COMSOL Moderator

Hello AG

Your Discussion has gone 30 days without a reply. If you still need help with COMSOL and have an on-subscription license, please visit our Support Center for help.

If you do not hold an on-subscription license, you may find an answer in another Discussion or in the Knowledge Base.

Note that while COMSOL employees may participate in the discussion forum, COMSOL® software users who are on-subscription should submit their questions via the Support Center for a more comprehensive response from the Technical Support team.

Suggested Content