Supercomputer Particle Simulations of Saturn's Rings  Hyperfine Structure Conference Paper uri icon

abstract

  • An asymptotic theory of spiral density waves and their instabilities in the Saturnian ring system of mutually gravitating and colliding particles has been developed (Griv et al. 2000, Pl&SS, 48, 679-698). The theory is successfully applied to interpreting the observations of the fine-scale structure of Saturn's rings. Our aim is to test the validity of the theory by computer many-body (that is, N-body) calculations. As is known, N-body models of Saturn's rings suffer from graininess due to the finite number of particles in direct simulations; the graininess manifests itself as a numeri-cal noise in the calculation. For the first time in planetary ring dynamics, we change the existing direct simulation code. This change involves multiprocessing: with the multiple processors in supercomputers it is possible to reduce the running time by processing more than one group of particles at a time. Use of …

publication date

  • January 1, 2002