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Title: Richtmyer-Meshkov instability-induced mixing: initial conditions modeling, three-dimensional simulations and comparisons to experiment

Abstract

Turbulent transport and mixing in the reshocked multi-mode Richtmyer-Meshkov instability is investigated using three-dimensional ninth-order weighted essentially non-oscillatory simulations. A two-mode initial perturbation with superposed random noise is used to model the Mach 1.5 air/SF{sub 6} Vetter-Sturtevant [1] experiment. The mass fraction isosurfaces and density cross-sections show the detailed structure before, during, and after reshock. The effects of reshock are quantified using the baroclinic enstrophy production, buoyancy production, and shear production terms. The mixing layer growth agrees well with the experimental growth rate. The post-reshock growth is in good agreement with the Mikaelian reshock model [2].

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
899437
Report Number(s):
UCRL-CONF-227160
TRN: US200708%%292
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: International Workshop on the Physics of Compressible Turbulent Mixing, Paris, France, Jul 17 - Jul 21, 2006
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CROSS SECTIONS; INSTABILITY; PHYSICS; PRODUCTION; SHEAR; SIMULATION; TRANSPORT

Citation Formats

Latini, M, Schilling, O, and Don, W S. Richtmyer-Meshkov instability-induced mixing: initial conditions modeling, three-dimensional simulations and comparisons to experiment. United States: N. p., 2007. Web.
Latini, M, Schilling, O, & Don, W S. Richtmyer-Meshkov instability-induced mixing: initial conditions modeling, three-dimensional simulations and comparisons to experiment. United States.
Latini, M, Schilling, O, and Don, W S. Mon . "Richtmyer-Meshkov instability-induced mixing: initial conditions modeling, three-dimensional simulations and comparisons to experiment". United States. doi:. https://www.osti.gov/servlets/purl/899437.
@article{osti_899437,
title = {Richtmyer-Meshkov instability-induced mixing: initial conditions modeling, three-dimensional simulations and comparisons to experiment},
author = {Latini, M and Schilling, O and Don, W S},
abstractNote = {Turbulent transport and mixing in the reshocked multi-mode Richtmyer-Meshkov instability is investigated using three-dimensional ninth-order weighted essentially non-oscillatory simulations. A two-mode initial perturbation with superposed random noise is used to model the Mach 1.5 air/SF{sub 6} Vetter-Sturtevant [1] experiment. The mass fraction isosurfaces and density cross-sections show the detailed structure before, during, and after reshock. The effects of reshock are quantified using the baroclinic enstrophy production, buoyancy production, and shear production terms. The mixing layer growth agrees well with the experimental growth rate. The post-reshock growth is in good agreement with the Mikaelian reshock model [2].},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 08 00:00:00 EST 2007},
month = {Mon Jan 08 00:00:00 EST 2007}
}

Conference:
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