Power Laws and Similarity of Rayleigh-Taylor and Richtmyer-Meshkov Mixing Fronts at All Density Ratios
- Physics Department, Nuclear Research Centre Negev, P.O. Box 9001, Beer-Sheva 84190 (Israel) Laboratory for Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)
The nonlinear evolution of large structure in Rayleigh-Taylor and Richtmyer-Meshkov bubble and spike fronts is studied numerically and explained theoretically on the basis of single-mode and two-bubble interaction physics at Atwood numbers ([ital A]). Multimode Rayleigh-Taylor bubble (spike) fronts are found as [ital h][sub [ital B]]=[alpha][sub [ital B]][ital Agt][sup 2] [[ital h][sub [ital s]]=[alpha][sub [ital s]]([ital A])[ital gt][sup 2]] with [alpha][sub [ital B]]=0.05, while Richtmyer-Meshkov bubble (spike) fronts are found as [ital h][sub [ital B]]=[ital a][sub [ital B]][ital t][sup [theta][sub [ital B]]] ([ital h][sub [ital s]]=[ital a][sub [ital s]][ital t][sup [theta][sub [ital s]]([ital A])]) with [theta][sub [ital B]]=0.4 at all [ital A]'s. The dependence of these scaling laws and parameters on [ital A] and on initial conditions is explained.
- DOE Contract Number:
- FC03-92SF19460
- OSTI ID:
- 6544432
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 74:4; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nonlinear evolution of the Rayleigh-Taylor and Richtmyer-Meshkov instabilities
Extended model for Richtmyer-Meshkov mix
Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ASTROPHYSICS
BUBBLES
CONFINEMENT
COUPLING
DATA
DENSITY
FLUIDS
INERTIAL CONFINEMENT
INFORMATION
INSTABILITY
INTERFACES
MIXING
NONLINEAR PROBLEMS
NUMERICAL DATA
PHYSICAL PROPERTIES
PLASMA CONFINEMENT
RAYLEIGH-TAYLOR INSTABILITY
SHOCK WAVES
SIMULATION
THEORETICAL DATA
WAVE PROPAGATION