Modeling and Simulation of Parametric Nonlinear Focused Ultrasound in Three-Dimensional Bubbly Liquids with Axial Symmetry by a Finite-Element Model

Figure 10

Waveform and spectral decomposition at the focus of acoustic pressure (a, b) and bubble volume variation (c, d), distribution of acoustic pressure in the (z, r) plane after 10 periods (e). Nonlinear regime,  kPa. Single-frequency case. Double-source case.

(a)

(b)

(c)

(d)

(e)