Accession Number:

ADA390775

Title:

An Implicit, Conservative Multi-Temperature MHD Algorithm

Descriptive Note:

Final rept. 15 Dec 1998-30 Nov 1999

Corporate Author:

WASHINGTON UNIV SEATTLE AEROSPACE AND ENERGETICS RESEARCH PROGRAM

Personal Author(s):

Report Date:

2000-05-25

Pagination or Media Count:

27.0

Abstract:

A novel algorithm to accurately simulate realistic plasmas with constituent species at multiple temperatures using an extended MHD model was developed. The algorithm was based on a ROE-type approximate Riemann solver. The algorithm was implemented in a code to model the time-dependent, three-dimensional, arbitrary-geometry MHD model which includes viscous and resistive effects. The code was extended to include thermal diffusion for the constituent temperatures neutrals, ions, and electrons. A time-dependent ionization model was added which self-consistently calculates the ionization fraction of the fluid. Energy loss mechanisms were added for the constituent fluid components. The algorithm was implemented on parallel supercomputers to allow the detailed modeling of realistic plasmas in complex three-dimensional geometries.

Subject Categories:

  • Plasma Physics and Magnetohydrodynamics
  • Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE