NDLI: Finite difference simulations of the Navier-Stokes equations using parallel distributed computing

Content Provider	IEEE Xplore Digital Library
Author	De Angeli, J.P. Valli, A.M.P. Reis Jr., N.C. De Souza, A.F.
Copyright Year	2003
Description	Author affiliation: Dept. de Informatica, UFES, Vitoria, Brazil (De Angeli, J.P.; Valli, A.M.P.)
Abstract	We discuss the implementation of a numerical algorithm for simulating incompressible fluid flows based on the finite difference method and designed for parallel computing platforms with distributed-memory, particularly for clusters of workstations. The solution algorithm for the Navier-Stokes equations utilizes an explicit scheme for pressure and an implicit scheme for velocities, i. e., the velocity field at a new time step can be computed once the corresponding pressure is known. The parallel implementation is based on domain decomposition, where the original calculation domain is decomposed into several blocks, each of which given to a separate processing node. All nodes then execute computations in parallel, each node on its associated subdomain. The parallel computations include initialization, coefficient generation, linear solution on the subdomain, and inter-node communication. The exchange of information across the subdomains, or processors, is achieved using the message passing interface standard, MPI. The use of MPI ensures portability across different computing platforms ranging from massively parallel machines to clusters of workstations. The execution time and speed-up are evaluated through comparing the performance of different numbers of processors. The results indicate that the parallel code can significantly improve prediction capability and efficiency for large-scale simulations.
Sponsorship	Brazilian Comput. Soc
Starting Page	149
Ending Page	156
File Size	329807
Page Count	8
File Format	PDF
ISBN	0769520464
DOI	10.1109/CAHPC.2003.1250333
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-11-12
Publisher Place	Brazil
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Finite difference methods Computational modeling Navier-Stokes equations Distributed computing Concurrent computing Clustering algorithms Workstations Numerical simulation Fluid flow Design methodology
Content Type	Text
Resource Type	Article

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