Shock and structure interaction in three-dimensional flow

An algorithm to study shock and structure interaction in three-dimensional flow has been developed on the basis of the Fyfe et al. (1984) algorithm, by implementing new boundary conditions to allow for curvature in a rectilinear mesh. A code, designated FAST3D, is described that solves the three-dimensional hydrodynamic equations for the conservation of mass, momentum, and energy of an ideal fluid, using a new leapfrog flux-corrected-transport (FCT) technique, based on the FCT algorithm of Boris and Book. The new algorithm has low diffusive properties while remaining simple and fast. As written, it can be completely vectorized to run efficiently on Cray-class supercomputers, either in-core or out of core. In conjunction with the technique developed for treating irregular internal and external boundaries, it provides a flexible, convenient, versatile tool for solving a broad class of supersonic hydrodynamic problems.