Distributed parallel processing applied to an implicit multigrid Euler/Navier-Stokes algorithm

Conference · Thu Dec 31 23:00:00 EST 1992

OSTI ID:6127063

Tysinger, T L; Caughey, D A ^[1]

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1. Fluent, Inc., Lebanon, NH (United States) Cornell Univ., Ithaca, NY (United States)

An implicit multigrid algorithm for the solution of the Euler and Navier-Stokes equations has been implemented within the framework of multiple block-structured grids in which the physical domain is spatially decomposed into several blocks and the solution is advanced in parallel on each block. Utilities have been developed to implement such a scheme in a distributed computing environment. The multi-block algorithm is designed so that the explicit residual calculation is identical to that of single-block scheme, and therefore converged solutions for both schemes must be the same. To accelerate convergence, synchronous and asynchronous multigrid strategies are implemented. Significant speedups have been achieved in a multiple processor environment, while convergence rates similar to those of the single-block scheme are observed. 10 refs.

• Research Organization: National Aeronautics and Space Administration, Moffett Field, CA (United States). Ames Research Center
• OSTI ID: 6127063
• Report Number(s): AIAA-Paper--93-0057; CONF-930108--; CNN: NAG2-665
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALGORITHMS
COMPUTERIZED SIMULATION
COMPUTERS
CONVERGENCE
DIFFERENTIAL EQUATIONS
DIGITAL COMPUTERS
EQUATIONS
FLUID FLOW
FORTRAN
IDEAL FLOW
MATHEMATICAL LOGIC
NAVIER-STOKES EQUATIONS
NUMERICAL SOLUTION
PARALLEL PROCESSING
PARTIAL DIFFERENTIAL EQUATIONS
PROGRAMMING
PROGRAMMING LANGUAGES
SIMULATION
SUPERCOMPUTERS
TRANSONIC FLOW