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

Autor:	Ping Wang, Ye Zhou, MacLaren, Stephan A., Huntington, Channing M., Raman, Kumar S., Doss, Forrest W., Flippo, Kirk A.
Předmět:	THEORY of wave motion SHEAR flow REYNOLDS number NAVIER-Stokes equations SHOCK tubes
Zdroj:	Physics of Plasmas; 215, Vol. 22 Issue 11, p1-10, 10p, 4 Color Photographs, 2 Black and White Photographs, 4 Diagrams, 7 Graphs
Abstrakt:	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. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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