k-Wave

1. dimimyl
   

   Member
   Joined: Apr '20
   Posts: 1

   Hello,

   I' m working on a project about the propagation of sound waves of low frequency (50- 150 Hz) through walls of different density. During simulations the absorption of sound by a wall with thickness 1cm seems to be high. Although because of the small thickness of the wall and the low frequency of the sound wave, i would expect almost no absorption or reflection effects. In order to simulate the wall i change the medium density and the sound speed in that area of the grid. Do yo have any suggestions in order to improve my simulations?

   Posted 3 years ago #

2. Bradley Treeby
   

   Developer
   Joined: Mar '10
   Posts: 1,643

   Hi dimimyl,

   Hard to say without knowing the specifics. As long as you're using a sensible number of points per wavelength, the transmission coefficients calculated using k-Wave should be ok. Have you tried running a convergence test (using smaller dx and dt and checking you get the same answer)? You could also try setting up a 1D simulation for your material properties and comparing with the analytical solution for transmission through a layered medium.

   Brad.

   Posted 3 years ago #

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