Modified ICEDALE method for astrogeophysical plasma flows
Abstract
The ImplicitContinuousEulerianDifference MeshArbitraryLagrangianEulerian (ICEDALE) 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 generalenergyconservation law is directly applied to the iteration process, with the total (kinetic, specificinternal, 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 zeroorder 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.
 Publication:

Space Manufacturing 8  Energy and Materials from Space
 Pub Date:
 June 1991
 Bibcode:
 1991aiaa.confQ....W
 Keywords:

 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;
 Astrophysics