Acoustic behavior of large encapsulated gas bubbles with resonance frequencies in the 50 to 100 Hz range Conference Paper uri icon


  • A one-dimensional resonator technique was used to investigate the acoustic behavior of water containing large spherical and toroidal encapsulated air bubbles. Tethered balloons and inner tubes, respectively, were used to create the bubbles, which had effective spherical radii of approximately 5 cm. The number of balloons or inner tubes varied from 3 to 6, which resulted in void fractions from 1.5% to 5%. Effective mixture sound speeds for both shapes were inferred from the resonances of a water and bubble-filled waveguide 1.8 meters in length. For the spherical bubbles, the Commander and Prosperetti (CP) model [J. Acoust. Soc. Am. 85, 732-746 (1989)] quantitatively described the measured sound speed dispersion approaching the individual bubble resonance frequency, and qualitatively predicted the frequency range of high attenuation, even in this regime of high void fractions and discrete bubble distribution within the waveguide. Qualitative agreement was found between the CP model and the toroidal bubble measurements. Finite-element simulations of both experiments were performed, which help explain the discrepancy between the model and the spherical bubble measurements. 2010 Acoustical Society of America.

name of conference

  • 159th Meeting Acoustical Society of America/NOISE-CON 2010

published proceedings

  • Proceedings of Meetings on Acoustics

author list (cited authors)

  • Wochner, M. S., Hinojosa, K. T., Lee, K., Argo, T. F., Wilson, P. S., & Mercier, R. S.

citation count

  • 0

complete list of authors

  • Wochner, Mark S||Hinojosa, Kevin T||Lee, Kevin||Argo, Theodore F||Wilson, Preston S||Mercier, Richard S

publication date

  • January 2010