Two-Dimensional Numerical Simulation and Analysis of Nonlinear Acoustic Waves in Bubbly Liquids with a Non-Homogeneous Bubble Distribution

In this work, a time-domain model of the two-dimensional acoustic field in a bubble-containing fluid medium is established. The finite-difference time-domain (FDTD) method is used to simulate sound field bubbly liquids with a non-homogeneous bubble distribution. The distribution of the sound field in two-dimensional space when sound waves propagate in a special equivalent medium is analyzed in detail. The results show that bubbles affect not only the speed of sound and attenuation of sound waves in the medium but also the nonlinear phenomenon can be clearly observed during numerical analysis.