MATEC Web of Conferences (Jan 2019)

Volume oscillation and acoustical scattering of a gas bubble

  • Ma Yan,
  • Ma Tao,
  • Zhao Feiyan

DOI
https://doi.org/10.1051/matecconf/201928306002
Journal volume & issue
Vol. 283
p. 06002

Abstract

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The exact solution of a gas bubble’ volume was obtained based on volume oscillation of a gas bubble. The volume pulsation, acoustic impedance, scattering pressure of a gas bubble, acoustical power of scattering and acoustical scattering cross section of a single bubble are researched in a small amplitude acoustic field. The results show that a big bubble oscillates more violently than that of a small bubble in a weak acoustic field if the linear resonance does not happen. The occurrence of a linear resonance response of a single bubble leads to the volume oscillation and the scattering ability of a gas bubble become stronger. Additionally, the scattering cross section does not depend on the driving pressure. The amplitude of scattering pressure of a big bubble can reach the magnitude compared to the driving pressure when the resonance response occurs.