Advanced mesh generation and update methods for 3D flow simulations

Advanced mesh generation and update methods for parallel 3D computation of complex flow problems are presented. The complexities of the class of probl ems targeted include complex geometries, unsteady behavior, and moving boun daries and interfaces, such as those encountered in fluid-object interactio ns. Parallel 3D simulation of 1000 spheres falling in a liquid-filled tube, and other computations, are presented in this paper to demonstrate the cha llenges involved in this class of flow problems and the methods developed t o address these challenges.