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

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-Sto...

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Bibliographic Details
Published in:Physics of plasmas 2015-11, Vol.22 (11)
Main Authors: Wang, Ping, Zhou, Ye, MacLaren, Stephan A., Huntington, Channing M., Raman, Kumar S., Doss, Forrest W., Flippo, Kirk A.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Computational fluid dynamics
Computer simulation
Experiments
Fluid flow
Hydrodynamics
Ignition
Mathematical models
Plasma physics
Reynolds averaging
Shear flow
Time dependence
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Summary: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.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.4934612