NASA Technical Reports Server (NTRS) : Particle pdf

NASA Technical Reports Server (NTRS) : Particle

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Description of the Book:

Particle simulations, in which collective phenomena in plasmas are studied by following the self consistent motions of many discrete particles, involve several highly repetitive sets of calculations that are readily adaptable to SIMD parallel processing. A fully electromagnetic, relativistic plasma simulation for the massively parallel processor is described. The particle motions are followed in 2 1/2 dimensions on a 128 x 128 grid, with periodic boundary conditions. The two dimensional simulation space is mapped directly onto the processor network; a Fast Fourier Transform is used to solve the field equations. Particle data are stored according to an Eulerian scheme, i.e., the information associated with each particle is moved from one local memory to another as the particle moves across the spatial grid. The method is applied to the study of the nonlinear development of the whistler instability in a magnetospheric plasma model, with an anisotropic electron temperature.

The wave distribution function is included as a new diagnostic to allow simulation results to be compared with satellite observations

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 7/1/1987
• Year: 1987
• Book Topics/Themes: NASA Technical Reports Server (NTRS), COMPUTER SYSTEMS PERFORMANCE, COMPUTERIZED SIMULATION, MASSIVELY PARALLEL PROCESSORS, PARALLEL PROCESSING (COMPUTERS), PARTICLE INTERACTIONS, PARTICLE MOTION, RELATIVISTIC PLASMAS, COMPUTATIONAL GRIDS, FAST FOURIER TRANSFORMATIONS, MAGNETOSPHERIC INSTABILITY, PARTICLE COLLISIONS, PLASMA PHYSICS, RELATIVISTIC VELOCITY, SIMD (COMPUTERS), TWO DIMENSIONAL MODELS, Gledhill, I. M. A., Storey, L. R. O

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