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Title: On modeling Richtmyer–Meshkov turbulent mixing widths

Journal Article · · Physica. D, Nonlinear Phenomena
 [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

In this paper, we present several observations concerning the Richtmyer- Meshkov mixing widths after a shock or reshock passes through the interface between two fluids. The mixing evolves with two oppositely-moving fronts: A bubble (b) side into the heavier fluid and a spike (s) side into the lighter fluid. Our first observation concerns the reference surface used to partition the total mix width, hb+s, into separate hb and hs widths. Next, we point out that if and when hb and hs obey power-laws t$$\theta$$ with separate $$\theta$$b and $$\theta$$s, then hb+s cannot be given, except as an approximation, by a single $$\theta$$b+s. Finally, we describe a fully continuous model for hi(t), i = b, s, or b + s, as the solution to the “drag equation” with a time-dependent $$\theta$$i(t).

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1670553
Alternate ID(s):
OSTI ID: 1580638
Report Number(s):
LLNL-JRNL-781430; 976217; TRN: US2203862
Journal Information:
Physica. D, Nonlinear Phenomena, Vol. 402, Issue na; ISSN 0167-2789
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 5 works
Citation information provided by
Web of Science

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Figures / Tables (5)


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