Ray Methods for Acoustic Scattering, Optics Of Bubbles, Diffraction Catastrophes, and Nonlinear Acoustics.
Abstract
This report indexes research completed in several areas: (A) Ray Methods for the Scattering of Sound by Elastic Objects in Water -- Glory scattering was analyzed for solid and fluid spheres and calibration targets. Ray methods were extended to leaky Rayleigh and whispering gallery waves and then to leaky Lamb waves on shells. A related product expansion of the S function was studied. (B) Acoustical and Optical Diffraction Catastrophes -- These were observed and calculated for several situations of varying degree of complexity. (C) Light Scattering by Bubbles in Water - - Observations and physical optics approximations for backward and forward glories, critical angle scattering, optical levitation, and photoacoustic emission. (D) Nonlinear Acoustics and Radiation Pressure -- Included studies of the interaction of sound with sound in bubble layers and free surfaces, radiation pressure and torques on drops, rapid cavitation due to shock reflection, and the response of hydrodynamic shear layers to oscillations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 24, 1992
- Accession Number
- ADA258938
Entities
People
- Philip L Marston
Organizations
- Washington State University