Algorithm Development for the Two-Fluid Plasma Model

Abstract

A preliminary algorithm based on the two-fluid plasma model is developed to investigate the possibility of simulating plasmas with a more physically accurate model than the MHD (magnetohydrodynamic) model. The algorithm is based on a Roe-type approximate Riemann Solver. Beginning with the two-fluid plasma model, the governing equations are normalized and formulated in conservation form. The eigenvalues and eigenvectors of the system flux Jacobians are determined and properly normalized to prevent catastrophic cancellation. An approximate Reimann solver is developed based on the derived fluxes. The electromagnetic fields are solved and coupled to the two-fluid approximate Reimann solver. The field solver is an electrostatic potential solver appropriate for electric fields and solves Poisson's equation.

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Document Details

Document Type
Technical Report
Publication Date
May 13, 2002
Accession Number
ADA402595

Entities

People

  • Uri Shumlak

Organizations

  • University of Washington

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Algorithms
  • Boltzmann Equation
  • Cauchy Problem
  • Computational Fluid Dynamics
  • Computational Science
  • Current Density
  • Differential Equations
  • Eigenvalues
  • Electric Fields
  • Electromagnetic Fields
  • Electrons
  • Equations
  • Magnetic Fields
  • Plasma Oscillation
  • Three Dimensional

Readers

  • Computational Fluid Dynamics (CFD)
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Plasma Physics / Magnetohydrodynamics