Wu J, Du G
Department of Physics, University of Vermont, Burlington 05405.
Ultrasound Med Biol. 1993;19(2):167-76. doi: 10.1016/0301-5629(93)90008-c.
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.
