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sound wavemodel

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Hi, Everyone,

I would like to make a propagation of sound wave model with PDE.


f=250Hz
Material = Air
lambda = c(sound speed of Air)/f
t= (sweep 0 to 5(sec) step 0.1sec)
k=2*pi/Lambda(wave number (rad/m))


If I use PDE[c], on source/flux tag needs "g"
Example, I think g = -i*u*k is a stationary wave.


But , I need a TRAVELING WAVE equation.

How to write on the "g=" ?


If you know, please tell me, traveling wave's "g"


I would like to animat the propagation of sound wave (pressuer) on conter graph.




Thank you very much

Yung hyo


0 Replies Last Post 8 mai 2011, 01:09 UTC−4
COMSOL Moderator

Hello Yung hyo

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