Numerical Modelling Of Nonlinear Ultrasound Propagation

Numerical modelling of ultrasonic transducers pressure field plays an important role in setting safety precautions for both diagnostic and therapeutic ultrasound applications. As the commonly applied intensities grow there is a concern that linear assumptions in ultrasound propagation modelling are not sufficient and non-linear effects have to be taken into account. Presented paper deals with a numerical model implementation allowing to simulate both linear and nonlinear ultrasound propagation in physical media. Simulation results of linear and non-linear models are compared for a set of initial acoustic pressure amplitudes.