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 The information provided may be out of date.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.
Modeling an acoustic t-junction
Posted Nov 13, 2012, 11:10 AM EST Version 4.3a 5 Replies
I am currently trying to model an acoustic t-junction with the frequency domain acoustic pressure module. But while the 3D simulation gives me reasonable results I only get nonsense from the 2D one. All the walls are defined as hard walls, only one side of the main duct has a plane wave radiation boundary condition with an incident pressure field.
I attached some of the results and it would be great, if anyone had an idea what I might be doing wrong or what is happening here.
The first picture is 2D at a 100 Hz.
The second one 2D at 700 Hz.
As you can see there is a singularity kind of thing in the center of the junction and the pressure distribution looks kind of strange.
Thanks for the help.