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Bulk turbulent transport and structure in Rayleigh–Taylor, Richtmyer–Meshkov, and variable acceleration instabilities

Published online by Cambridge University Press:  03 March 2004

ANTOINE LLOR
ANTOINE LLOR
Affiliation:
Commissariat à l'Energie Atomique, Bruyères le Châtel, France
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Abstract

Directed energy and turbulence structure are shown to be crucial in understanding the growth of self-similar Rayleigh–Taylor and incompressible Richtmyer–Meshkov turbulent mixing zones. Averaging over the mixing zone is used to analyze the response of a modified k–ε model and a turbulent two-fluid model. Three different transport regimes are then identified by considering self-similar variable acceleration RT flows (SSVARTs), which appear as promising reference flows for model testing.

Keywords

Mining instabilitiesRayleigh–TaylorRichtmyer–MeshkovSelf-similar flowsTurbulence structureTurbulent models
Type
Research Article
Information
Laser and Particle Beams , Volume 21 , Issue 3 , July 2003 , pp. 305 - 310
Copyright
© 2003 Cambridge University Press

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