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Title: Large-eddy and unsteady RANS simulations of a shock-accelerated heavy gas cylinder

Journal Article · · Shock Waves
 [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Two-dimensional numerical simulations of the Richtmyer–Meshkov unstable “shock-jet” problem are conducted using both large-eddy simulation (LES) and unsteady Reynolds-averaged Navier–Stokes (URANS) approaches in an arbitrary Lagrangian–Eulerian hydrodynamics code. Turbulence statistics are extracted from LES by running an ensemble of simulations with multimode perturbations to the initial conditions. Detailed grid convergence studies are conducted, and LES results are found to agree well with both experiment and high-order simulations conducted by Shankar et al. (Phys Fluids 23, 024102, 2011). URANS results using a k–L approach are found to be highly sensitive to initialization of the turbulence lengthscale L and to the time at which L becomes resolved on the computational mesh. As a result, it is observed that a gradient diffusion closure for turbulent species flux is a poor approximation at early times, and a new closure based on the mass-flux velocity is proposed for low-Reynolds-number mixing.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1313559
Report Number(s):
LLNL-JRNL-659268
Journal Information:
Shock Waves, Vol. 26, Issue 4; ISSN 0938-1287
Publisher:
SpringerCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 39 works
Citation information provided by
Web of Science

References (43)

A tensor artificial viscosity using a finite element approach journal December 2009
T HE R ICHTMYER -M ESHKOV I NSTABILITY journal January 2002
Adaptive mesh refinement for hyperbolic partial differential equations journal March 1984
Two-Dimensional Turbulence journal January 2012
Large eddy simulation of a shocked gas cylinder instability induced turbulence journal February 2010
Evolution of X-ray cavities journal June 2009
The dynamics of shock accelerated light and heavy gas cylinders journal September 1993
Statistical Theory of Turbulence journal September 1935
The Role of Mixing in Astrophysics journal April 2000
Effects of WENO flux reconstruction order and spatial resolution on reshocked two-dimensional Richtmyer–Meshkov instability journal February 2007
Monotonically Integrated Large Eddy Simulation of Free Shear Flows journal May 1999
A rationale for implicit turbulence modelling journal January 2002
Two-dimensional viscous flow simulation of a shock accelerated heavy gas cylinder journal February 2011
Progress toward Ignition and Burn Propagation in Inertial Confinement Fusion journal September 1992
K-L turbulence model for the self-similar growth of the Rayleigh-Taylor and Richtmyer-Meshkov instabilities journal August 2006
Computation of the Energy Spectrum in Homogeneous Two-Dimensional Turbulence journal January 1969
Two-dimensional turbulence journal May 1980
A comparison of mix models for the Rayleigh–Taylor instability journal January 2012
Experimental study of incompressible Richtmyer–Meshkov instability journal February 1996
Density ratio dependence of Rayleigh–Taylor mixing for sustained and impulsive acceleration histories journal February 2000
Local adaptive mesh refinement for shock hydrodynamics journal May 1989
A comparative study of the turbulent Rayleigh–Taylor instability using high-resolution three-dimensional numerical simulations: The Alpha-Group collaboration journal May 2004
Enthalpy diffusion in multicomponent flows journal May 2009
Assessment of localized artificial diffusivity scheme for large-eddy simulation of compressible turbulent flows journal March 2010
Applications of shock-induced mixing to supersonic combustion journal May 1993
Three-dimensional effects in shock-cylinder interactions journal April 2008
Measurements of turbulent mixing due to Kelvin–Helmholtz instability in high-energy-density plasmas journal March 2013
Comparison of two- and three-dimensional simulations of miscible Richtmyer-Meshkov instability with multimode initial conditions journal October 2014
Assessing implicit large eddy simulation for two-dimensional flow journal September 2011
Taylor instability in shock acceleration of compressible fluids journal May 1960
Instability of the interface of two gases accelerated by a shock wave journal January 1972
PLIF flow visualization and measurements of the Richtmyer–Meshkov instability of an air/SF 6 interface journal August 2002
Interaction of weak shock waves with cylindrical and spherical gas inhomogeneities journal September 1987
An experimental investigation of mixing mechanisms in shock-accelerated flow journal September 2008
Experimental and numerical study of shock-accelerated elliptic heavy gas cylinders journal November 2010
Turbulence statistics in fully developed channel flow at low Reynolds number journal April 1987
A study of ALE simulations of Rayleigh–Taylor instability journal March 2001
Large eddy simulation and ALE mesh motion in Rayleigh–Taylor instability simulation journal April 2002
Implicit Large Eddy Simulation: Computing Turbulent Fluid Dynamics book July 2007
Development and validation of a turbulent-mix model for variable-density and compressible flows journal October 2010
Experimental investigation of RayleighTaylor mixing at small Atwood numbers journal January 1999
Detailed measurements of a statistically steady Rayleigh–Taylor mixing layer from small to high Atwood numbers journal August 2010
Monotonically integrated large eddy simulation of free shear flows conference August 1998

Cited By (8)

Comment on “Large-eddy and unsteady RANS simulations of a shock-accelerated heavy gas cylinder” by B. E. Morgan, J. Greenough journal September 2018
Response to “Comment on ‘Large-eddy simulation and unsteady RANS simulations of a shock-accelerated heavy gas cylinder’ by B. E. Morgan, J. Greenough” journal September 2018
Optimization of a high-yield, low-areal-density fusion product source at the National Ignition Facility with applications in nucleosynthesis experiments journal May 2018
Linear response of a Hall magnetic drift wave for verification of Hall MHD algorithms journal July 2019
Theoretical and experimental investigation of the equation of state of boron plasmas journal August 2018
The Spack package manager: bringing order to HPC software chaos
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Exploring the crossover between high-energy-density plasma and ultracold neutral plasma physics journal October 2019