𝔖 Bobbio Scriptorium
✦   LIBER   ✦

A Method to Suppress the Finite-Grid Instability in Plasma Simulations

✍ Scribed by J.W. Brackbill; Giovanni Lapenta

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
380 KB
Volume
114
Category
Article
ISSN
0021-9991

No coin nor oath required. For personal study only.

✦ Synopsis

A technique for suppressing the finite-grid instability in plasma simulation by jiggling the computation mesh is revisited. Linear dispersion theory suggests a reduction in growth rate of (50 %) when the mesh is randomly jiggled. With an implicit method, a large time step, and a grid with variable spacing, a nearly complete absence of the instability is observed. Because of its simplicity and low cost, it is suggested the method can be used routinely with variable zoning or adaptive grids to suppress the finite-grid instability. (c) 1994 Academic Press, Inc.

πŸ“œ SIMILAR VOLUMES

Hall Currents and the Rayleigh-Taylor In
Hall Currents and the Rayleigh-Taylor Instability of a Finitely Conducting Plasma in the Presence of Coriolis Forces
✍ V. D. Sankhla; P. K. Bhatia πŸ“‚ Article πŸ“… 1978 πŸ› John Wiley and Sons 🌐 English βš– 221 KB πŸ‘ 1 views

We have studied the effect of rotation on the development of Ragleigh-Taylor instability of an incompressible, viscous, Hall, finitely conducting plasma of variable density. The solution is developed, through variational methods, for n semi-infinite pliisma in which the density varies exponentially

A flux-limited numerical method for solv
A flux-limited numerical method for solving the MHD equations to simulate propulsive plasma flows
✍ K. Sankaran; L. Martinelli; S. C. Jardin; E. Y. Choueiri πŸ“‚ Article πŸ“… 2001 πŸ› John Wiley and Sons 🌐 English βš– 156 KB

## Abstract For numerical simulations to be effective tools in plasma propulsion research, a high‐order accurate solver that captures MHD shocks monotonically and works reliably for strong magnetic fields is needed. For this purpose, a characteristics‐based scheme for the MHD equations, with flux l

A Finite Difference Method for Dispersiv
A Finite Difference Method for Dispersive Linear Waves with Applications to Simulating Microwave Pulses in Water
✍ Jonathan H.C Luke πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 168 KB

The EP d method, a finite difference method for highly dispersive linear wave equations, is introduced and analyzed. Motivated by the problem of simulating the propagation of microwave pulses through water, the method attempts to relieve the computational burden of resolving fast processes, such as

A FINITE ELEMENT TECHNIQUE TO SIMULATE T
A FINITE ELEMENT TECHNIQUE TO SIMULATE THE STABLE SHAPE EVOLUTION OF PLANAR CRACKS WITH AN APPLICATION TO A SEMI-ELLIPTICAL SURFACE CRACK IN A BIMATERIAL FINITE SOLID
✍ RICARDO GALDOS πŸ“‚ Article πŸ“… 1997 πŸ› John Wiley and Sons 🌐 English βš– 383 KB πŸ‘ 3 views

This paper describes a numerical procedure to model the crack front evolution of initially arbitrary shaped planar cracks in a three-dimensional solid. The influence of a bimaterial interface on the fracture path of a semi-elliptical surface crack in a three-dimensional structure is examined. The an