BREAKUP - A computer code for parallelizing the overset grid approach

摘要

A computer code, BREAKUP, has been developed which allows the widely used overset grid method to be run in a parallel computer environment to achieve faster run times for computational field simulations over complex geometries. ^The overset grid method involves multiple structured grids that are computationally connected in a solver via interpolation coefficients used for grid-to-grid communications of boundary data. ^Overset grids have been in widespread use for many years on serial computers, and several well-known Navier-Stokes flow solvers have been extensively developed and validated to support their use. ^One drawback of serial overset grid methods has been the extensive compute time required to update flow solutions one grid at a time. ^Parallelizing the overset grid method overcomes this limitation by updating each grid or subgrid simultaneously. ^BREAKUP prepares overset grids for parallel processing by subdividing each overset grid into statically load-balanced subgrids. ^Two-dimensional examples with sample solutions, as well as 3D examples, are presented. ^(Author)