Accession Number : ADA295612


Title :   Parallel Simulation of Subsonic Fluid Dynamics on a Cluster of Workstations.


Descriptive Note : Memorandum rept.,


Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE ARTIFICIAL INTELLIGENCE LAB


Personal Author(s) : Skordos, Panayotis A.


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a295612.pdf


Report Date : NOV 1994


Pagination or Media Count : 19


Abstract : An effective approach of simulating fluid dynamics on a cluster of non-dedicated workstations is presented. The approach uses local interaction algorithms, small communication capacity, and automatic migration of parallel processes from busy hosts to free hosts. The approach is well-suited for simulating subsonic flow problems which involve both hydrodynamics and acoustic waves; for example, the flow of air inside wind musical instruments. Typical simulations achieve $80/%$ parallel efficiency (speedup/processors) using 20 HP-Apollo workstations. Detailed measurements of the parallel efficiency of 2D and 3D simulations are presented, and a theoretical model of efficiency is developed which fits closely the measurements. Two numerical methods of fluid dynamics are tested: explicit finite differences, and the lattice Boltzmann method.


Descriptors :   *COMPUTERIZED SIMULATION , *PARALLEL PROCESSING , *SUBSONIC FLOW , *FLUID DYNAMICS , ALGORITHMS , DISTRIBUTED DATA PROCESSING , MODELS , CAPACITY(QUANTITY) , INTERACTIONS , TWO DIMENSIONAL , ACOUSTIC WAVES , THEORY , AIR FLOW , EFFICIENCY , THREE DIMENSIONAL , FINITE DIFFERENCE THEORY , CLUSTERING , WORK STATIONS , COMMUNICATION AND RADIO SYSTEMS , ARTIFICIAL INTELLIGENCE , MIGRATION , SUBSONIC CHARACTERISTICS , NUMERICAL METHODS AND PROCEDURES , AUTOMATIC , HYDRODYNAMICS , BOLTZMANN EQUATION.


Subject Categories : COMPUTER PROGRAMMING AND SOFTWARE
      FLUID MECHANICS


Distribution Statement : APPROVED FOR PUBLIC RELEASE