غلامحسن اسماعيلي

‎For underwater acoustic wave propagation modeling‎, ‎it is necessary to solve complete wave equation for 3D media‎. ‎Because of limitations in computational resources‎, ‎solving complete wave equation with all ideal considerations such as heterogeneity‎, ‎and absorption‎, ‎for 3D media is difficult‎. Thus by considering easier conditions‎, ‎we can solve wave equation with normal computers‎. Solving wave equation with computers needs to discretization techniques such as finite-element or finite-difference methods‎. This study deals with parabolic equation modeling of wave propagation in a 2D acoustic heterogeneous media‎, ‎using the second-order approximation of acoustic wave equation in the frequency domain‎. To avoid spurious reflections from the model boundaries‎, ‎a perfectly matched layer (PML) is implemented‎..