Abstract
The author's transformation method for finding the acoustic field in steady homentropic potential flow at low Mach number is applied to acoustic generation by vibrating bodies. In order to get round the restriction of the method to acoustic propagation in a steady basic flow, the boundary condition on the vibrating body surface is transferred on the mean position of that surface. The method is applied to a pulsating sphere and a juddering sphere without restriction on wave number, and the results are found to agree with those obtained by Dowling for acoustically compact spheres.
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