Accession Number : ADA189639

Title :   An Efficient Parallel Algorithm for the Simulation of Three-Dimensional Compressible Transition in a 20 Processor Flex/32 Multicomputer.

Descriptive Note : Final rept.,

Corporate Author : INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA

Personal Author(s) : Erlebacher, G ; Bokhari, Shahid H ; Hussaini, M Y

PDF Url : ADA189639

Report Date : Jul 1987

Pagination or Media Count : 20

Abstract : The compressible, three-dimensional, time-dependent Navier Stokes equations are solved on a 20 processor Flex/32 computer. The code is a parallel implementation of an existing code operational on the Cray 2 at NASA Ames which performs direct simulations of the initial stages of the transition process of the transition process of wall-bounded flow at supersonic Mach numbers . Spectral collocation in all three spatial directions (Fourier along the plate and Chebyshev normal to it) insures high accuracy of the flow variables. By hiding most of the parallelism in low level routines, the casual user is shielded from most of the non-standard coding constructs. Speedups of 13 out of a maximum of 16 are achieved on the largest computational grids.

Descriptors :   *COMPRESSIBLE FLOW, *NAVIER STOKES EQUATIONS, *COMPUTER PROGRAMMING, ALGORITHMS, CODING, COMPUTATIONS, GRIDS, MACH NUMBER, PARALLEL ORIENTATION, SPATIAL DISTRIBUTION, SUPERSONIC FLIGHT, TIME DEPENDENCE, TRANSITIONS, VARIABLES, PARALLEL PROCESSING, THREE DIMENSIONAL FLOW, DIGITAL SIMULATION, FOURIER ANALYSIS, CHEBYSHEV APPROXIMATIONS

Subject Categories : Fluid Mechanics
      Computer Programming and Software

Distribution Statement : APPROVED FOR PUBLIC RELEASE