The example below shows results of a transient analysis of a horn. The mouth of the horn is mounted in an infinite rigid baffle. The piston at the throat has a single pulse prescribed as the displacement history.
An axisymmetric model is used. Acoustic finite elements model the air inside the horn and extend out to a spherical surface. Wave envelope elements then model the remainder of the half space.
This model is a specially created illustrative example, it is not a commercially available horn.
Axial displacement at horn throat v time |
Pressure on axis of symmetry at horn mouth v time. |
Animated pressure field showing the pulse travelling from the horn throat into the air.