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Title: Three- and two-dimensional simulations of counter-propagating shear experiments at high energy densities at the National Ignition Facility

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4934612· OSTI ID:1262180

Three- and two-dimensional numerical studies have been carried out to simulate recent counter-propagating shear flow experiments on the National Ignition Facility. A multi-physics three-dimensional, time-dependent radiation hydrodynamics simulation code is used. Using a Reynolds Averaging Navier-Stokes model, we show that the evolution of the mixing layer width obtained from the simulations agrees well with that measured from the experiments. A sensitivity study is conducted to illustrate a 3D geometrical effect that could confuse the measurement at late times, if the energy drives from the two ends of the shock tube are asymmetric. Implications for future experiments are discussed.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344; AC52-06NA25396
OSTI ID:
1262180
Alternate ID(s):
OSTI ID: 1225403
Report Number(s):
LLNL-JRNL-676841; PHPAEN
Journal Information:
Physics of Plasmas, Vol. 22, Issue 11; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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Cited By (4)

Modeling hydrodynamics, magnetic fields, and synthetic radiographs for high-energy-density plasma flows in shock-shear targets journal January 2020
Turbulent mixing and transition criteria of flows induced by hydrodynamic instabilities journal August 2019
Long-duration direct drive hydrodynamics experiments on the National Ignition Facility: Platform development and numerical modeling with CHIC journal August 2019
Late-time mixing and turbulent behavior in high-energy-density shear experiments at high Atwood numbers journal May 2018