Parallel ocean flow computations on a regular and on an irregular grid

Abstract

Ocean flow problems can be discretized and solved either on a regular grid, by taking land points into account in the computations, or on an irregular grid. In the latter approach, the number of unknowns is less than for the regular grid. The data structures are completely different for the two approaches. As a consequence, different numerical techniques may be required. In this paper we study different preconditioning techniques, and show how the solution algorithms can be parallelized.