Power Laws and Similarity of Rayleigh-Taylor and Richtmyer-Meshkov Mixing Fronts at All Density Ratios

Journal Article · Mon Jan 23 00:00:00 EST 1995 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.74.534· OSTI ID:6544432

Alon, U; Hecht, J; Ofer, D; Shvarts, D ^[1]

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1. 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), Vol. 74:4; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
FLUIDS
RAYLEIGH-TAYLOR INSTABILITY
INTERFACES
ASTROPHYSICS
BUBBLES
COUPLING
DENSITY
INERTIAL CONFINEMENT
MIXING
NONLINEAR PROBLEMS
SHOCK WAVES
SIMULATION
THEORETICAL DATA
WAVE PROPAGATION
CONFINEMENT
DATA
INFORMATION
INSTABILITY
NUMERICAL DATA
PHYSICAL PROPERTIES
PLASMA CONFINEMENT
665000* - Physics of Condensed Matter- (1992-)