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Computational Strategies for Three-Dimensional Flow Simulations on Distributed Computer Systems

Download or Read eBook Computational Strategies for Three-Dimensional Flow Simulations on Distributed Computer Systems PDF written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-17 with total page 190 pages. Available in PDF, EPUB and Kindle.
Computational Strategies for Three-Dimensional Flow Simulations on Distributed Computer Systems
Author :
Publisher : Createspace Independent Publishing Platform
Total Pages : 190
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ISBN-10 : 1722973870
ISBN-13 : 9781722973872
Rating : 4/5 (70 Downloads)

Book Synopsis Computational Strategies for Three-Dimensional Flow Simulations on Distributed Computer Systems by : National Aeronautics and Space Administration (NASA)

Book excerpt: This research effort is directed towards an examination of issues involved in porting large computational fluid dynamics codes in use within the industry to a distributed computing environment. This effort addresses strategies for implementing the distributed computing in a device independent fashion and load balancing. A flow solver called TEAM presently in use at Lockheed Aeronautical Systems Company was acquired to start this effort. The following tasks were completed: (1) The TEAM code was ported to a number of distributed computing platforms including a cluster of HP workstations located in the School of Aerospace Engineering at Georgia Tech; a cluster of DEC Alpha Workstations in the Graphics visualization lab located at Georgia Tech; a cluster of SGI workstations located at NASA Ames Research Center; and an IBM SP-2 system located at NASA ARC. (2) A number of communication strategies were implemented. Specifically, the manager-worker strategy and the worker-worker strategy were tested. (3) A variety of load balancing strategies were investigated. Specifically, the static load balancing, task queue balancing and the Crutchfield algorithm were coded and evaluated. (4) The classical explicit Runge-Kutta scheme in the TEAM solver was replaced with an LU implicit scheme. And (5) the implicit TEAM-PVM solver was extensively validated through studies of unsteady transonic flow over an F-5 wing, undergoing combined bending and torsional motion. These investigations are documented in extensive detail in the dissertation, 'Computational Strategies for Three-Dimensional Flow Simulations on Distributed Computing Systems', enclosed as an appendix. Sankar, Lakshmi N. and Weed, Richard A. Unspecified Center APPLICATIONS PROGRAMS (COMPUTERS); BALANCING; CODING; COMPUTATIONAL FLUID DYNAMICS; DISTRIBUTED PROCESSING; THREE DIMENSIONAL FLOW; ALGORITHMS; FLOW EQUATIONS; MAN MACHINE SYSTEMS; RUNGE-KUTTA METHOD; STATIC LOADS; TRANSONIC FLOW; UNSTEADY FLOW...


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