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.

Size of Mesh in PML

Tom Alexander SolgÄrd

Please login with a confirmed email address before reporting spam

I am modeling 3D pressure acoustics. Does the mesh of the PML have to be as fine as the mesh in the primary air domain?

I want the PML to utilize as few elemnts as possible. The PML automatically adapts the mesh so that it matches the mesh size in the air domain, so the transition from smaller elements to larger is more or less "continuous ".



1 Reply Last Post Dec 2, 2010, 12:10 PM EST
Ivar Kjelberg CSEM SA (CH)

Please login with a confirmed email address before reporting spam

Posted: 1 decade ago Dec 2, 2010, 12:10 PM EST
Hi

The best is to have the PML defined as "layers" in the geoemtry section and have them with sweep mesh (in the shape of onion shells around your volume) then I mostly use 5-7 elements in the thickness but that is mainly for ACDC not sure hoe it is for accoustic or RF havent really tried, but you can parametrise th number of levels and take a look on a simple example, that is often the best approach

--
Good luck
Ivar
Hi The best is to have the PML defined as "layers" in the geoemtry section and have them with sweep mesh (in the shape of onion shells around your volume) then I mostly use 5-7 elements in the thickness but that is mainly for ACDC not sure hoe it is for accoustic or RF havent really tried, but you can parametrise th number of levels and take a look on a simple example, that is often the best approach -- Good luck Ivar

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.