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.
PML is reflecting acoustic wave
Posted 30 set 2020, 13:38 GMT-4 Structural & Acoustics, Acoustics & Vibrations 2 Replies
Please login with a confirmed email address before reporting spam
Hello everyone,
PML is not absorbing acoustic waves and it's causing some unphysical reflections, is there any experienced guy with perfectly matched layer here? I'm trying to compute scattered wave off an abject which is put in a background standing wave.
Kind regards Jason
Please login with a confirmed email address before reporting spam
They really should call them IMperfectly matched layers.
You should check the settings (wave velocity), the thickness, and the meshing (mapped mesh with ~5 elements preferred). And at least in emw there are some additional parameters that can be adjusted.
If it's critical set up a separate simulation to quantify the amount of reflected wave.
Please login with a confirmed email address before reporting spam
They really should call them IMperfectly matched layers.
You should check the settings (wave velocity), the thickness, and the meshing (mapped mesh with ~5 elements preferred). And at least in emw there are some additional parameters that can be adjusted.
If it's critical set up a separate simulation to quantify the amount of reflected wave.
Hi Dave,
I need to have a non-reflecting boundary in my thermoviscous acoustic simulation, but it seems this so-called "PML" is not working the way it should. in my simulation pml geometry is a rectangle surrounding a partcle and I want pml to absorb scattered wave off the particle (which are spherical-shaped waves) but it's not working. You think it might be due to the scatterd way angle to PML?
Kind regards