Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session Q28: Flow Instability: Rayleigh-Taylor/Richtmyer-Meshkov III
12:50 PM–3:26 PM,
Tuesday, November 20, 2018
Georgia World Congress Center
Room: B316
Chair: Jacob McFarland, University of Missouri
Abstract ID: BAPS.2018.DFD.Q28.12
Abstract: Q28.00012 : Effect of plasma parameters on magnetic suppression of the Richtmyer-Meshkov instability in two-fluid plasmas*
3:13 PM–3:26 PM
Presenter:
Yuan Li
(King Abdullah University of Science and Technology)
Authors:
Vincent Wheatley
(Univ of Queensland)
Daryl M Bond
(Univ of Queensland)
Yuan Li
(King Abdullah University of Science and Technology)
Ravi Samtaney
(King Abdullah Univ of Sci & Tech (KAUST))
Dale I. Pullin
(Caltech)
The Richtmyer-Meshkov instability (RMI) of a shock accelerated perturbed density interface is important in both inertial confinement fusion and astrophysics, where the materials involved are typically in the plasma state. In the single-fluid magnetohydrodynamic model, it has been demonstrated that the plasma RMI can be mitigated by magnetizing the plasma with a sufficiently strong field. We will show that this is also the case in the two-fluid plasma model, which couples a separate set of conservation laws for each species to Maxwell’s equations. We will explore how the suppression mechanism varies with plasma parameters. For low density plasmas with larger plasma length-scales, the mechanism is a Lorentz force driven inversion of the sign of vorticity on the interface. As plasma density increases and plasma length-scales decrease, the vorticity generated by the shock interaction is increasingly transported from the interface by plasma waves.
*This work was partially supported by the KAUST Office of Sponsored Research under Award URF/1/3418-01.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.Q28.12
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