Modified ICED-ALE method for astrogeophysical plasma flows

Details Modified ICED-ALE method for astrogeophysical plasma flows Modified ICED-ALE method for astrogeophysical plasma flows

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aiaa.confq....w&link_type=abstract

AIAA, Fluid Dynamics, Plasma Dynamics and Lasers Conference, 22nd, Honolulu, HI, June 24-26, 1991. 10 p.

Statistics

Computation

Computational Fluid Dynamics, Cosmic Plasma, Energy Conservation, Internal Energy, Kinetic Energy, Magnetohydrodynamic Flow, Space Plasmas, Algorithms, Boltzmann Transport Equation, Flow Velocity, Iterative Solution, Magnetic Flux

Scientific paper

The Implicit-Continuous-Eulerian-Difference Mesh-Arbitrary-Lagrangian-Eulerian (ICED-ALE) algorithm of Brackbill and Pracht (1973) is modified for the study of astrophysical plasma flows in which dynamical effects are important. In the present study the general-energy-conservation law is directly applied to the iteration process, with the total (kinetic-, specific-internal-, and magnetic-) energy density being obtained implicitly at the end of the process. An example is computed in which the convergence speed of the latter method is substantially faster than that of the former. The initializing calculation, or explicit phase, in which the electric current density, magnetic diffusion of field, energy augmentation, and zero-order approximation of the flow velocity are given, is described. Consideration is given to the iteration process, or implicit phase, from which the exact Lagrangian solution for energy density, velocity, and a magnetic field is obtained.

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