Sound radiation from a water-loaded cylinder due to machine noise
نویسندگان
چکیده
This paper presents the modelling and analysis of the noise radiation due to internal acoustic excitation of a cylinder submerged in a heavy fluid. The cylinder consists of a cylindrical shell filled with air and attached to rigid end plates. The acoustic excitation is modelled as monopoles to simulate the operation of a machine noise source in the cylindrical shell. In order to model the noise transmission and radiation, the machine noise is characterised as multiple monopole sources with random amplitudes and random phases on the surfaces of an imaginary component boundary. An initial study including the effect of absorbing material on noise radiation is presented. Some of the analytical results are compared with those from numerical finite element / boundary element models. Excellent agreement is obtained between the analytical results and results from the numerical method.
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