Three- and two-dimensional simulations of counter-propagating shear experiments at high energy densities at the National Ignition Facility [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 2015.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description:: Article numbers 112,701 : digital, PDF file
Additional Creators:: Lawrence Berkeley National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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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.

Report Numbers:

E 1.99:llnl-jrnl--676841
llnl-jrnl--676841

Subject(s):

Note:

Published through SciTech Connect.
11/06/2015.
"llnl-jrnl--676841"
Physics of Plasmas 22 11 ISSN 1070-664X; PHPAEN AM
Ping Wang; Ye Zhou; Stephan A. MacLaren; Channing M. Huntington; Kumar S. Raman; Forrest W. Doss; Kirk A. Flippo.

Funding Information:

AC52-07NA27344
AC52-06NA25396

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