摘要: The purpose was to explore computationally the 3-D hydrodynamics of extragalactic radio jets. This entailed putting together a large number of numerical tools before such simulations could be performed. Three chapters on numerical techniques are presented testing out both particle and grid-based methods for computational fluid dynamics. Four chapters of astrophysical applications are then presented which: (1) consider the flow of a supersonic jet in a transonic cross-wind as a model for narrow angle tails; (2) consider jet-shock interactions as a model for wide angle tails; (3) try out jet-cloud interactions as a model for the largest of wide angle tails; and (4) use wall-jets as a model for hot spot formation. (Dissert. Abstr.)