Numerical study on nonlinear acoustic pulse propagation for parametric array with different fluid layer

We present numerical results of nonlinear acoustic pulse propagation emitted from parametric array utilizing different fluid layer in water environment. A numerical simulation was carried out using the compressible forms fluid dynamic equations in cylindrical coordinate system for the parametric sound propagation in water with and without different fluid layer composed of ethanol. The numerical results indicated that the asymmetry of the acoustic pulse increased with different fluid layer due to the combined effect of diffraction and nonlinearity in the propagation.