Study on Infrasound Propagation of Finite Amplitude Wave in the Big Size Horn

This study aims to determine the coordinate of the horn’s axial section at which the amplitude reaches its highest value, as well as variations in the acoustic pressure amplitude of the second harmonic in the horn during excitation in the horn throat of the finite amplitude wave. The laws of growth and decrease of the second harmonic during stimulation of the finite amplitude wave in the air-horn are analysed using analytical equations. It is calculated the distance at which the second harmonic propagating via the air-horn reaches its maximum. Air-horns of various shapes are subjected to a comparative investigation. All calculations were done assuming a horn with a length of 10 metres and a diameter of 4 metres at the outlet section. The acoustic signal in such a mouthpiece has a resonance frequency of 20 Hz.

Author (S) Details

Galyna Ivanovna Sokol
Department of Physics and Technology, Dnipropetrovs’k National University named of Oles Gonchar, Dnepropetrovsk, Ukraine.

Vladyslav Yurievich Kotlov
Department of Physics and Technology, Dnipropetrovs’k National University named of Oles Gonchar, Dnepropetrovsk, Ukraine.

Elena Sergeevna Mironenko
Department of Physics and Technology, Dnipropetrovs’k National University named of Oles Gonchar, Dnepropetrovsk, Ukraine.

Sergey Yurievich Kirichenko
Department of Physics and Technology, Dnipropetrovs’k National University named of Oles Gonchar, Dnepropetrovsk, Ukraine.

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