VISCOUS POW COMPUTATIONS FOR COMPLEX GEOMETRIES ON PARALLEL COMPUTERS

A widely used computational fluid dynamics (CFD) code known as TLNS3D, which was developed for large, shared-memory computers, is ported to a distributed computing environment. An engineering approach is used h ere to parallelize this code so that minimal deviation from the origin al (non-parallel) code is incurred. A natural partitioning along grid blocks is adopted in which one or more blocks are distributed to each of the available processors. An automatic, static load-balancing strat egy is employed for equitable distribution of computational work to sp ecified processors. The message passing interface (MPI) protocols are incorporated for data communication. Both synchronous and asynchronous communication modes have been incorporated. As the number of processo rs is increased, the asynchronous communication mode shows much better scalability and clearly outperforms the synchronous mode of communica tion. (C) 1998 Elsevier Science Limited. All rights reserved.