Magnetohydrodynamic Implosion Symmetry and Suppression of Richtmyer-Meshkov Instability in an Octahedrally Symmetric Field

Abstract

We present numerical simulations of ideal magnetohydrodynamics showing suppression of the Richtmyer-Meshkov instability in spherical implosions in the presence of an octahedrally symmetric magnetic field. This field configuration is of interest owing to its high degree of spherical symmetry in comparison with previously considered dihedrally symmetric fields. The simulations indicate that the octahedral field suppresses the instability comparably to the other previously considered candidate fields for light-heavy interface accelerations while retaining a highly symmetric underlying flow even at high field strengths. With this field, there is a reduction in the root-mean-square perturbation amplitude of up to approximately 50% at representative time under the strongest field tested while maintaining a homogeneous suppression pattern compared to the other candidate fields.

Department(s)

Mechanical and Aerospace Engineering

Keywords and Phrases

Compressible flows; Magnetohydrodynamics; Richtmyer-Meshkov instability

International Standard Serial Number (ISSN)

2469-990X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2017 American Physical Society (APS), All rights reserved.

Publication Date

26 Jan 2017

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