The scope of this thesis is to investigate the nonlinear physics fundamental to the
progressive distortion of a bounded finite amplitude ultrasonic beam. Emphasis is placed on …

In many domains of acoustic field propagation, such as medical ultrasound imaging,
lithotripsy shock treatment, and underwater sonar, a realistic calculation of beam patterns …

Sound pressure amplitudes of the first three harmonics in finite-amplitude CW ultrasound
beams are measured along and across the beam axis in fresh water. The sound source is a …

Some problems relevant to medical ultrasonics are addressed through experimental
measurements of focused, pure‐tone beam patterns under quasilinear conditions where …

A numerical solution of the KZK‐type parabolic nonlinear evolution equation is presented for
finite‐amplitude sound beams radiated by rectangular sources. The initial acoustic …

This study introduces a KZK-type model describing the nonlinear wave propagation due to
“slowly” modulated ultrasound excitation, where the ratio between the (dominant) …

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 …

This paper deals with diffraction effects related to the determination of nonlinearity
parameters B/A in liquids using the parametric interaction. A diffraction model, based on …

The work presented in this dissertation investigates numerical simulations that solve
nonlinear ultrasonic wave propagation in both the strongly nonlinear regime, where shocks …

A method for fast numerical simulation of high-intensity focused ultrasound beams is
derived. The method is based on the frequency-domain representation of the Khokhlov …