skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Scale interactions and anisotropy in Rayleigh–Taylor turbulence

Journal Article · · Journal of Fluid Mechanics
DOI:https://doi.org/10.1017/jfm.2021.902· OSTI ID:1837434

We study energy scale transfer in Rayleigh–Taylor (RT) flows by coarse graining in physical space without Fourier transforms, allowing scale analysis along the vertical direction. Two processes are responsible for kinetic energy flux across scales: baropycnal work Λ, due to large-scale pressure gradients acting on small scales of density and velocity; and deformation work Π, due to multiscale velocity. Our coarse-graining analysis shows how these fluxes exhibit self-similar evolution that is quadratic-in-time, similar to the RT mixing layer. We find that Λ is a conduit for potential energy, transferring energy non-locally from the largest scales to smaller scales in the inertial range where Π takes over. In three dimensions, Π continues a persistent cascade to smaller scales, whereas in two dimensions Π rechannels the energy back to larger scales despite the lack of vorticity conservation in two-dimensional (2-D) variable density flows. This gives rise to a positive feedback loop in 2-D RT (absent in three dimensions) in which mixing layer growth and the associated potential energy release are enhanced relative to 3-D RT, explaining the oft-observed larger α values in 2-D simulations. Despite higher bulk kinetic energy levels in two dimensions, small inertial scales are weaker than in three dimensions. Moreover, the net upscale cascade in two dimensions tends to isotropize the large-scale flow, in stark contrast to three dimensions. Furthermore, our findings indicate the absence of net upscale energy transfer in three-dimensional RT as is often claimed; growth of large-scale bubbles and spikes is not due to ‘mergers’ but solely due to baropycnal work Λ.

Research Organization:
Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Argonne National Laboratory (ANL), Argonne, IL (United States). Argonne Leadership Computing Facility (ALCF)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE National Nuclear Security Administration (NNSA); National Aeronautics and Space Administration (NASA); National Science Foundation (NSF)
Grant/Contract Number:
NA0003856; SC0014318; SC0020229; 80NSSC18K0772; PHY-2020249; SC0019329; NA0003914; AC02-05CH11231; AC02-06CH11357
OSTI ID:
1837434
Alternate ID(s):
OSTI ID: 1864922; OSTI ID: 1903417
Journal Information:
Journal of Fluid Mechanics, Vol. 930; ISSN 0022-1120
Publisher:
Cambridge University PressCopyright Statement
Country of Publication:
United States
Language:
English

References (107)

Multi-scale gradient expansion of the turbulent stress tensor journal February 2006
Localness of energy cascade in hydrodynamic turbulence. I. Smooth coarse graining journal November 2009
Modal model for the nonlinear multimode Rayleigh–Taylor instability journal August 1996
Two-Dimensional Turbulence journal January 2012
Revisiting the late-time growth of single-mode Rayleigh–Taylor instability and the role of vorticity journal February 2020
Analysis of turbulent transport and mixing in transitional Rayleigh–Taylor unstable flow using direct numerical simulation data journal October 2010
Analytical Model of Nonlinear, Single-Mode, Classical Rayleigh-Taylor Instability at Arbitrary Atwood Numbers journal March 2002
Comprehensive numerical methodology for direct numerical simulations of compressible Rayleigh–Taylor instability journal May 2016
Core-collapse supernova simulations in one and two dimensions: comparison of codes and approximations journal September 2018
Study of ultrahigh Atwood-number Rayleigh–Taylor mixing dynamics using the nonlinear large-eddy simulation method journal April 2011
Experimental study of Rayleigh–Taylor instability with a complex initial perturbation journal March 2009
Scale-to-scale energy and enstrophy transport in two-dimensional Rayleigh–Taylor turbulence journal December 2015
Stable Steady Flows in Rayleigh-Taylor Instability journal July 1998
Scale decomposition in compressible turbulence journal March 2013
Detailed measurements of a statistically steady Rayleigh–Taylor mixing layer from small to high Atwood numbers journal August 2010
A public turbulence database cluster and applications to study Lagrangian evolution of velocity increments in turbulence journal January 2008
Variable-density effects in incompressible non-buoyant shear-driven turbulent mixing layers journal August 2020
Self-Similar Multimode Bubble-Front Evolution of the Ablative Rayleigh-Taylor Instability in Two and Three Dimensions journal October 2018
Three-dimensional simulations of low foot and high foot implosion experiments on the National Ignition Facility journal March 2016
Toward a burning plasma state using diamond ablator inertially confined fusion (ICF) implosions on the National Ignition Facility (NIF) journal November 2018
Inviscid criterion for decomposing scales journal May 2018
Recent advances in the turbulent Rayleigh–Taylor instability journal May 2005
Theory of the Rayleigh-Taylor instability journal August 1991
A scaling analysis of turbulent flows driven by Rayleigh–Taylor and Richtmyer–Meshkov instabilities journal February 2001
The direct enstrophy cascade of two-dimensional soap film flows journal May 2014
Locality of turbulent cascades journal July 2005
Turbulence theories and statistical closure approaches journal November 2021
Inhibition of turbulence in inertial-confinement-fusion hot spots by viscous dissipation journal May 2014
Time-dependent study of anisotropy in Rayleigh-Taylor instability induced turbulent flows with a variety of density ratios journal August 2019
Compact finite difference schemes with spectral-like resolution journal November 1992
Nonlinear evolution of multimode Rayleigh–Taylor instability in two and three dimensions journal June 1995
Energy transfer in Rayleigh-Taylor instability journal August 2002
Effect of cross-beam energy transfer on target-offset asymmetry in direct-drive inertial confinement fusion implosions journal November 2020
Inertial-confinement fusion with lasers journal May 2016
Advection and the Efficiency of Spectral Energy Transfer in Two-Dimensional Turbulence journal August 2016
Variable-density mixing in buoyancy-driven turbulence journal May 2008
Inertial Ranges in Two-Dimensional Turbulence journal January 1967
Effects of isothermal stratification strength on vorticity dynamics for single-mode compressible Rayleigh-Taylor instability journal September 2019
Influence of orientation on the evolution of small perturbations in compressible shear layers with inflection points journal March 2017
Effects of Background Stratification on the Compressible Rayleigh Taylor Instability conference June 2017
Energy and spectral dynamics in forced compressible turbulence journal June 1990
A novel two-dimensional coupled lattice Boltzmann model for incompressible flow in application of turbulence Rayleigh–Taylor instability journal October 2017
Impact of Neutrino Opacities on Core-collapse Supernova Simulations journal February 2018
Dependence of turbulent Rayleigh-Taylor instability on initial perturbations journal May 2004
Rayleigh–Taylor mixing in an otherwise stable stratification journal November 2011
Comparison of two- and three-dimensional simulations of miscible Rayleigh-Taylor instability journal April 2006
On the Instability of Superposed Fluids in a Gravitational Field. journal July 1955
Influence of subgrid scales on resolvable turbulence and mixing in Rayleigh–Taylor flow journal March 2004
Mixing in ICF implosions on the National Ignition Facility caused by the fill-tube journal March 2020
Bolgiano scale in confined Rayleigh–Taylor turbulence journal November 2011
Further space-time correlations of velocity in a turbulent boundary layer journal January 1958
Phenomenology of Rayleigh-Taylor Turbulence journal September 2003
Exact Results on Scaling Exponents in the 2D Enstrophy Cascade journal May 1995
Subgrid‐scale backscatter in turbulent and transitional flows journal July 1991
Energy Cascade in Large-Eddy Simulations of Turbulent Fluid Flows book January 1975
Compressibility effects on the Rayleigh–Taylor instability growth between immiscible fluids journal January 2004
Validation of the Sharp–Wheeler bubble merger model from experimental and computational data journal January 1988
Cascades and transitions in turbulent flows journal November 2018
Carbon ablator areal density at fusion burn: Observations and trends at the National Ignition Facility journal May 2020
Three-Dimensional Simulations of Rayleigh-Taylor Mixing in Core-Collapse Supernovae journal October 2010
Turbulence with Large Thermal and Compositional Density Variations journal January 2020
High-Reynolds number Rayleigh–Taylor turbulence journal January 2009
Statistics of turbulence subgrid‐scale stresses: Necessary conditions and experimental tests journal February 1994
Compressible Turbulence: The Cascade and its Locality journal April 2011
Filtering, averaging, and scale dependency in homogeneous variable density turbulence journal February 2021
Viscous effects on the Rayleigh-Taylor instability with background temperature gradient journal July 2016
Statistical measurements of scaling and anisotropy of turbulent flows induced by Rayleigh-Taylor instability journal January 2013
Incompressible Rayleigh–Taylor Turbulence journal January 2017
Baropycnal Work: A Mechanism for Energy Transfer across Scales journal May 2019
Kinetic energy transfer in compressible isotropic turbulence journal February 2018
Buoyancy-driven variable-density turbulence journal October 2007
Scale-Invariance and Turbulence Models for Large-Eddy Simulation journal January 2000
Rayleigh–Taylor and Kelvin–Helmholtz instability studied in the frame of a dimension-reduced model journal June 2020
New phenomena in variable-density Rayleigh–Taylor turbulence journal December 2010
Aspect-ratio-constrained Rayleigh–Taylor instability journal May 2020
Rayleigh–Taylor instability in magnetohydrodynamic simulations of the Crab nebula journal July 2014
An overview of Rayleigh-Taylor instability journal July 1984
Gas Dynamics of the Nickel-56 Decay Heating in Pair-instability Supernovae journal July 2020
Numerical simulation of mixing by Rayleigh–Taylor and Richtmyer–Meshkov instabilities journal December 1994
Kolmogorov scaling and intermittency in Rayleigh-Taylor turbulence journal June 2009
Late-time quadratic growth in single-mode Rayleigh-Taylor instability journal October 2012
A three-dimensional renormalization group bubble merger model for Rayleigh–Taylor mixing journal March 2002
Mapping the Energy Cascade in the North Atlantic Ocean: The Coarse-Graining Approach journal February 2018
Localness of energy cascade in hydrodynamic turbulence. II. Sharp spectral filter journal November 2009
Spectral Calculations of Isotropic Turbulence: Efficient Removal of Aliasing Interactions journal January 1971
Dimensionality dependence of the Rayleigh–Taylor and Richtmyer–Meshkov instability late-time scaling laws journal June 2001
The late-time dynamics of the single-mode Rayleigh-Taylor instability journal July 2012
Nonlinear excitation of the ablative Rayleigh-Taylor instability for all wave numbers journal January 2018
Power Laws and Similarity of Rayleigh-Taylor and Richtmyer-Meshkov Mixing Fronts at All Density Ratios journal January 1995
A comparative study of the turbulent Rayleigh–Taylor instability using high-resolution three-dimensional numerical simulations: The Alpha-Group collaboration journal May 2004
Rayleigh–Taylor turbulence: self-similar analysis and direct numerical simulations journal May 2004
Type Ia Supernova Explosion Models journal September 2000
Temperature distributions and gradients in laser-heated plasmas relevant to magnetized liner inertial fusion journal August 2020
New directions for Rayleigh–Taylor mixing
  • Glimm, James; Sharp, David H.; Kaman, Tulin
  • Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 371, Issue 2003 https://doi.org/10.1098/rsta.2012.0183
journal November 2013
Cascade of Kinetic Energy in Three-Dimensional Compressible Turbulence journal May 2013
Numerical simulations of two-fluid turbulent mixing at large density ratios and applications to the Rayleigh–Taylor instability journal November 2013
Turbulence: the filtering approach journal May 1992
High-order, stable, and conservative boundary schemes for central and compact finite differences journal April 2019
Three‐dimensional numerical simulation of turbulent mixing by Rayleigh–Taylor instability journal May 1991
Computational investigation of single mode vs multimode Rayleigh–Taylor seeding in Z-pinch implosions journal December 1998
On using large-eddy simulation for the prediction of noise from cold and heated turbulent jets journal August 2005
Reynolds number effects on Rayleigh–Taylor instability with possible implications for type Ia supernovae journal July 2006
The instability of liquid surfaces when accelerated in a direction perpendicular to their planes. I journal March 1950
Energy cascade and scaling in supersonic isothermal turbulence journal July 2013
Transition stages of Rayleigh–Taylor instability between miscible fluids journal September 2001
Progress in understanding turbulent mixing induced by Rayleigh–Taylor and Richtmyer–Meshkov instabilities journal May 2003
Physical Mechanism of the Two-Dimensional Enstrophy Cascade journal November 2003