Onescu C., Pavic G., Parlac S., Stanescu N.

The paper treats the acoustic radiation of a finite cylinder using the numerical method called the equivalent source method. The cylinder is mechanically excited by a white noise. The velocity distribution on the cylinder surface is found by measurements. The surface velocity reconstruction with minimum errors is made by optimising the positions of equivalent simple sources (monopoles) and using different methods to solve matrix equation. A comparison between the measured and synthesized acoustic pressure is incorporated into the procedure. The computing time is optimised by minimizing the number of sources without decrease of the accuracy. Using the correct number of surface control points (i.e. the number of measurement points) the error of radiated acoustic power can be minimized.