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Title: The high-energy-density counterpropagating shear experiment and turbulent self-heating

The counterpropagating shear experiment has previously demonstrated the ability to create regions of shock-driven shear, balanced symmetrically in pressure, and experiencing minimal net drift. This allows for the creation of a high-Mach-number high-energy-density shear environment. New data from the counterpropagating shear campaign is presented, and both hydrocode modeling and theoretical analysis in the context of a Reynolds-averaged-Navier-Stokes model suggest turbulent dissipation of energy from the supersonic flow bounding the layer is a significant driver in its expansion. A theoretical minimum shear flow Mach number threshold is suggested for substantial thermal-turbulence coupling.
Authors:
; ; ; ;  [1]
  1. Los Alamos National Laboratory, New Mexico 87545 (United States)
Publication Date:
OSTI Identifier:
22218351
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 12; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ENERGY DENSITY; MACH NUMBER; NAVIER-STOKES EQUATIONS; PLASMA; PLASMA EXPANSION; PLASMA HEATING; PLASMA SIMULATION; REYNOLDS NUMBER; SHEAR; SHOCK WAVES; SUPERSONIC FLOW; TURBULENCE