The fast nearfield method applied to axisymmetric radiators
Keywords:Acoustic waves, Acoustics, Error analysis, Pressure effects, Rayleigh scattering, Velocity measurement, Apodized pressure field, Axisymmetric radiators, Fast nearfield method (FNM), Rayleigh-Sommerfield integral
AbstractA fast nearfield method (FNM) was developed for pistons that have a spatially uniform velocity. This fast nearfield method was implemented and compared with the standard Rayleigh integral approach. The Rayleigh-Sommerfield integral representing the apodized pressure field was also evaluated using the point source method. It was found that speedup on the order of 4 is achieved at 10 and 1% peak errors.
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