ORIGINAL ARTICLE: PDF OnlyPINDERA MACIEJ Z.; SIEGEL, JOHN M. JR.; MAKHIJANI, VINOD B.ASAIO Journal: September-October 1997 - p M465 Free Abstract A numerical model has been developed to simulate propagation of ultrasonic beams in inhomogeneous moving media. The model is based on the ray theory of propagating waves, valid in the limit of high frequencies. The resulting equations depend only on local values of the velocity field and the speed of sound. In its implementation, the model assumes that the interactions of sound with the surrounding flow field are decoupled. This allows for applying the model in a post processing mode to flows computed by other means. The model was used to investigate beam behavior in unsteady cavitating. © Lippincott-Raven Publishers.