Acoustic streaming generated by a focused Gaussian beam and finite amplitude tonebursts.
Theoretical models for calculating the on-axis acoustic streaming velocity generated by a continuous-wave (CW) and pulsed finite amplitude ultrasonic beams have been developed. Using these models, the on-axis streaming velocity is calculated for unfocused linear plane wave ultrasonic beams, focused linear Gaussian beams, and unfocused ultrasonic tonebursts of finite amplitude. The numerical results show that the on-axis streaming velocity is significantly enhanced by the nonlinear harmonic generation of finite-amplitude ultrasonic tonebursts.
Wu
J
J
Department of Physics, University of Vermont, Burlington 05405.
Du
G
G
D000162:Acoustics; D006801:Humans; D008433:Mathematics; D008954:Models, Biological; D014463:Ultrasonography / Q000379:methods*