Sound Propagation Simulations Using Lattice Gas Methods

摘要

A new lattice gas model for one-dimensional sound propagation has been recently proposed by the authors. In this paper, its extension to a sound propagation model In " two-dimensional .square lattice Is discussed. A variation on standard splitting methods is used to extend the formulation developed for the one-dimensional model to obtain a two-dimensional model. In arbitrary directions of propagation the method Is nt least second-order accurate. However, the accuracy is greatly Increased for narrow angle propagation along the coordinate axes.