期刊
PHYSICAL REVIEW LETTERS
卷 117, 期 22, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.117.225001
关键词
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资金
- U.S. Department of Energy by the Los Alamos National Laboratory [DE-AC52-06NA25396]
- Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
Using a large volume high-energy-density fluid shear experiment (8.5 cm(3)) at the National Ignition Facility, we have demonstrated for the first time the ability to significantly alter the evolution of a supersonic sheared mixing layer by controlling the initial conditions of that layer. By altering the initial surface roughness of the tracer foil, we demonstrate the ability to transition the shear mixing layer from a highly ordered system of coherent structures to a randomly ordered system with a faster growing mix layer, indicative of strong mixing in the layer at a temperature of several tens of electron volts and at near solid density. Simulations using a turbulent-mix model show good agreement with the experimental results and poor agreement without turbulent mix.
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