Parallel simulation of time-domain acoustic wave propagation

Simulations of acoustic wave propagation are an important tool for reconstructing structure of Earth's subsurface. The core of such simulations is an efficient and accurate method of time-domain acoustic wave simulation in an inhomogeneous domain. Radial Basis Function-generated Finite Differences (RBF-FD) method is a popular variant of local strong form meshless methods that does not require predefined connections between nodes, making it easier to adapt node distribution to the problem under consideration. This paper explores RBF-FD as an alternative to traditionally FDM based methods for time-domain wave propagation. It is demonstrated that RBF-FD provides accurate results even in challenging cases, where conventional methods struggle to even obtain a stable solution.