Radiation
from a circular plane rigid baffled piston:
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Fluid is ambiant air.
The piston is at the origin, and has a radius a=30 cm..
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The frequency is 1825
Hz, corresponding to ka=10. (corresponds to Figure 7.4.5 in K&F, 4th
ed).
-
Shown here is the instantaneous
acoustic velocity.
-
The length of the arrows
is proportional to the square root of local velocity amplitude.
The movie was created
using MATLAB (Registered Trademark).