Parallelisation of a novel 3D hybrid structured-unstructured grid CFD production code

Abstract

In this paper we describe an aeronautical cell-vertex based flow code which can handle a series of complex geometries defined by either block structured grids, unstructured grids or a hybrid of the two grids, this code is called ESAUNA. We then discuss the implementation of such a code on a parallel processing platform using a domain decomposition approach and the single program multiple data model. Such an implementation is necessary to allow for the solution of complex flows over large complex geometries needed by the aerospace industry to accurately predict flow behaviour. We conclude with some initial results on two development systems — Parsytec GC/Powerplus and the IBM SP2 machine.