Oblique shocks and the combined Rayleigh--Taylor, Kelvin--Helmholtz, and Richtmyer--Meshkov instabilities
- University of California, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
This Letter considers the evolution of perturbations at an interface between two fluids subjected to an oblique shock. The normal component of the shock generates the Richtmyer--Meshkov (RM) instability, and the parallel component generates the Kelvin--Helmholtz (KH) instability. If a constant normal acceleration is also present it induces the Rayleigh--Taylor (RT) instability or, depending on the sign of [ital gA] ([ital g]=acceleration, [ital A]=Atwood number), it acts to stabilize the KH and RM instabilities. Treating the shock as an instantaneous acceleration, analytic formulas are derived for the evolution of the perturbations. This Letter illustrates with an application to inertial-confinement-fusion capsules.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 7281173
- Journal Information:
- Physics of Fluids; (United States), Vol. 6:6; ISSN 1070-6631
- Country of Publication:
- United States
- Language:
- English
Similar Records
A buoyancy–shear–drag-based turbulence model for Rayleigh–Taylor, reshocked Richtmyer–Meshkov, and Kelvin–Helmholtz mixing
Rayleigh–Taylor and Richtmyer–Meshkov instabilities: A journey through scales
Related Subjects
GENERAL PHYSICS
SHOCK WAVES
HELMHOLTZ INSTABILITY
RAYLEIGH-TAYLOR INSTABILITY
ACCELERATION
COMPRESSIBLE FLOW
INERTIAL CONFINEMENT
PLASMA CONFINEMENT
CONFINEMENT
FLUID FLOW
INSTABILITY
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
661300* - Other Aspects of Physical Science- (1992-)