Ring Source/Force Excitation of Axisymmetric Shell Structure
Abstract
Formulae are given for the near field pressures, far field pressures and acoustic particle displacements of a ring source and a ring axial force. These quantities are necessary ingredients for calculations of far field radiation, in the presence of the scattering action of an axisymmetric shell structure. Numerical examples are given. In many hydroacoustics problems the excitation is located close to the shell's surface: it may be monopole type due to cavitation sources, dipole type due to fluctuating fluid forces or quadrupole type due to turbulence sources. Herein the excitation cases of an axial ring source and an axial ring force are analysed. They model, in a very simple way, propulsor generated cavitation and fluctuating thrust in the surrounding fluid. Great Britain.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1988
- Accession Number
- ADA205757
Entities
People
- J. H. James
Organizations
- Admiralty Research Establishment