Surface acoustic wave propagation model based on the Runge-Kutta method

Abstract

The simulation of acoustic wave propagation in the surface layer region is carried out by obtaining a positive acoustic velocity gradient, so that the wave phenomenon in the surface layer region is left in this simulation. In this study, the emission of acoustic rays was carried out by changing the angle of incidence and length of the used beam, and the determination of the acoustic velocity gradient was carried out using the 2nd order Runge-Kutta procedure. The results showed that with an acoustic velocity of 1405 m/s at a depth of 0 to 40 meters, a minimum angle of incidence of 0.09 radians was obtained with a wave propagation of 250 meters at a length of 1 meter and a gradient pattern of +2.5. The comparison of analytical and computational results for wave propagation in the surface layer region is 4.51% error.