Shape oscillation and static deformation of drops and bubbles driven by modulated radiation stresses—Theory

摘要: Deformations of drops and bubbles opposed by surface tension driven radiation stresses at the interface are calculated using spherical harmonic expansions for radial tangential stresses. Superimposed acoustic waves produce which oscillate difference frequency ω in addition to static When effects viscosity on omitted, stress vanishes; a procedure is proposed calculating from theory ’’Acoustic Radiation Pressure Compressible Sphere’’ [K. Yosioka Y. Kawasima, Acustica 5, 167–173 (1955)]. The calculation response assumes incompressible second‐order flow omits body forces normally asociated with streaming. Resonance phase shifts enhancements should occur when close natural oscillation mode. Quadrupole resonance have been observed author [J. Acoust. Soc. Am. 67, 27–37 (1980)]. Diverse applications include possibilities of: inference interfacial response; emulsification exciting large amplitude oscillations; deformation or splitting decay time free also calculated; new term found small but significant surrounded liquid supplements ’’The Oscillations Fluid Droplet Immersed Another Fluid’’ [C. A. Miller L. E. Scriven, J. Mech. 32, 417–435 (1968)].