Lattice-Gas Automata Fluids on Parallel Supercomputers
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A condensed history and theoretical development of lattice-gas automata in the Boltzmann limit is presented. This is provided as background to set up the context for understanding the implementation of the lattice-gas method on two parallel supercomputers: the MIT cellular automata machine CAM-8 and the Connection Machine CM-5. The macroscopic limit of two-dimensional fluids is tested by simulating the Rayleigh-Bénard convective instability, Kelvin-Helmholtz shear instability, and the Von Karman vortex shedding instability. Performance of the two machines in terms of both site update rate and maximum problem size are comparable. The CAM-8, being a low-cost desktop machine, demonstrates the potential of special-purpose digital hardware.
21 pages, revtex.sty used to generate Computers in Physics Compuscript, epsf.sty used to include 10 postscript images, submitted to Computers in Physics Jan 94. Postscript figures appended at the bottom in tar-compress-uuencode form
21 pages, revtex.sty used to generate Computers in Physics Compuscript, epsf.sty used to include 10 postscript images, submitted to Computers in Physics Jan 94. Postscript figures appended at the bottom in tar-compress-uuencode form