Many applications of intense sound, such as in sonar, medicine, and nondestructive
evaluation, involve radiation from directional sources. Linear effects of diffraction determine …

Nonlinear effects in Rayleigh wave beams are investigated analytically and numerically.
Diffraction effects are taken into account within the parabolic approximation, and nonlinearity …

Two theoretical models and the corresponding numerical codes for the description of
nonlinear acoustic beams radiated from intense cw sources in water are presented. In the …

Focused finite amplitude sound fields are investigated with numerical solutions of the
Khokhlov‐Zabolotskaya‐Kuznetsov (KZK) equation. The numerical solution is based on the …

Propagation and interaction of two collinear finite amplitude sound beams is investigated
using Fourier series expansions and numerical methods to solve the nonlinear parabolic …

Acoustic fields of powerful ultrasound sources with Gaussian spatial apodization and initial
excitation in the form of a periodic wave or single pulse are examined based on the …

A special analytical method, which combines the parabolic approximation (KZ equation) with
nonlinear geometrical acoustics, is developed to model nonlinear and diffraction effects near …

An existing model, the Bergen code, is used to simulate the propagation of ultrasonic beams
of finite amplitude, due to rectangular and square sources. It is found that the edges of the …

Nonlinear effects in focused sound beams are investigated with numerical solutions of the
Khokhlov–Zabolotskaya–Kuznetsov (KZK) parabolic wave equation. The KZK equation …

Distortion and harmonic generation in the nearfield of a finite amplitude sound beam are
considered, assuming time‐periodic but otherwise arbitrary on‐source conditions. The basic …