Oscillations of nonspherical and spherical bubbles

Abstract

Murray Strasberg maintained an interest in bubble oscillations throughout his career and frequently offered an incisive perspective. His early bubble research includes [Strasberg, J. Acoust. Soc. Am. 25, 536–537 (1952); Strasberg, Acustica 4, 450 (1954)]. His pertinent application of an electrostatic potential theory analogy expands interests of some of James Clerk Maxwell's students. In addition some related discussions with Murray will be recalled and experiments from the 1980s and 1990s at Washington State University pertaining to bubbles and their associated dynamics reviewed. Those experiments concern the response of bubbles to steady and modulated optical radiation forces [Unger and Marston, J. Acoust. Soc. Am. 83, 970–975 (1988); Unger and Marston, Ocean Optics IX, Proc. SPIE 925, 326–333 (1988)] and to modulated acoustical radiation forces [Asaki et al., Phys. Rev. Lett. 75, 2686–2689, (E) 4336 (1995); Asaki and Marston, J. Fluid Mech. 300, 149–167 (1995); Asaki and Marston, J. Acoust. Soc. Am. 102, 3372–3377 (1997)]. The latter papers pertain to the simultaneous measurement of the frequency and damping of bubble shape oscillations. [Work supported by ONR.]