On modeling Richtmyer–Meshkov turbulent mixing widths
- 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
Web of Science
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