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Title: Three-dimensional single-mode nonlinear ablative Rayleigh-Taylor instability

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4940917· OSTI ID:1239798
 [1];  [1];  [2];  [1];  [1];  [1]
  1. Univ. of Rochester, Rochester, NY (United States)
  2. Univ. Politecnica de Madrid, Madrid (Spain)

The nonlinear evolution of the single-mode ablative Rayleigh-Taylor instability is studied in three dimensions. As the mode wavelength approaches the cutoff of the linear spectrum (short-wavelength modes), it is found that the three-dimensional (3D) terminal bubble velocity greatly exceeds both the two-dimensional (2D) value and the classical 3D bubble velocity. Unlike in 2D, the 3D short-wavelength bubble velocity does not saturate. The growing 3D bubble acceleration is driven by the unbounded accumulation of vorticity inside the bubble. As a result, the vorticity is transferred by mass ablation from the Rayleigh-Taylor spikes to the ablated plasma filling the bubble volume.

Research Organization:
Univ. of Rochester, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Fusion Energy Sciences (FES); USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
NA0001944; FG02-04ER54789; SC0014318; DEFG02- 04ER54789
OSTI ID:
1239798
Alternate ID(s):
OSTI ID: 1236654
Journal Information:
Physics of Plasmas, Vol. 23, Issue 2; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 19 works
Citation information provided by
Web of Science

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