Mesh Optimization for the Acoustic Parabolic Equation

This work is devoted to increasing the computational efficiency of numerical methods for one-way Helmholtz Equation (higher-order parabolic equation) in a heterogeneous underwater environment. The finite-difference rational Padé approximation propagation operator considered, whose artificial parameters are grid cell sizes and reference sound speed. relationship between medium established. An optimized method automatic determination proposed. optimization makes it possible account any angle arbitrary variations refractive index. simulation results confirm adequacy proposed approach. Automating selection process eliminate human errors avoid excessive consumption resources.