A Boundary Condition for Comlputational Magnetohydrohynamics
Abstract
A new "background plasma" method for treating boundaries in Eulerian magnetohydrodynamic computations is presented. Previously unconsidered aspects of plasma confinement by a wall are examined in the formulation of the boundary condition. Innovations include a distinct condition under which a plasma can separate from a wall resulting in an influx of "background plasma," the use of boundary values which are interpreted to be interface values not included in volume integrations, and a condition under which a plasma returns to the wall resulting in a stoppage of the outflux of "background plasma." Excellent agreement is obtained between a Lagrangian computation and an Eulerian computation incorporating the new boundary condition.
- Publication:
-
Journal of Computational Physics
- Pub Date:
- October 1977
- DOI:
- 10.1016/0021-9991(77)90015-8
- Bibcode:
- 1977JCoPh..25..104L
- Keywords:
-
- Boundary Conditions;
- Boundary Value Problems;
- Computerized Simulation;
- Magnetohydrodynamic Flow;
- Plasma Control;
- Coding;
- Finite Difference Theory;
- Flow Velocity;
- Mathematical Models;
- Plasma Density;
- Plasma Oscillations;
- Plasma Pinch;
- Time Lag;
- Wall Flow;
- Plasma Physics