The numerical simulation of strongly unsteady flow with hundreds of movingbodies

A methodology for the simulation of strongly unsteady flows with hundreds o f moving bodies has been developed. An unstructured grid, high-order, monot onicity preserving, ALE solver with automatic refinement and remeshing capa bilities was enhanced by adding equations of state for high explosives, dea ctivation techniques and optimal data structures to minimize CPU overheads, automatic recovery of CAD data from discrete data, two new remeshing optio ns, and a number of visualization tools for the preprocessing phase of larg e runs. The combination of these improvements has enabled the simulation of strongly unsteady flows with hundreds of moving bodies. Several examples d emonstrate the effectiveness of the proposed methodology. Copyright (C) 199 9 John Wiley & Sons, Ltd.