skip to main content

DOE PAGESDOE PAGES

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

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.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1]
  1. Univ. of Rochester, Rochester, NY (United States)
  2. Univ. Politecnica de Madrid, Madrid (Spain)
Publication Date:
Grant/Contract Number:
NA0001944; FG02-04ER54789; SC0014318; DEFG02- 04ER54789
Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 23; Journal Issue: 2; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Research Org:
Univ. of Rochester, Rochester, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24); USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; bubble dynamics; Rayleigh Taylor instabilities; rotating flows; laser ablation; kinematics
OSTI Identifier:
1239798
Alternate Identifier(s):
OSTI ID: 1236654

Yan, R., Betti, R., Sanz, J., Aluie, H., Liu, B., and Frank, A.. Three-dimensional single-mode nonlinear ablative Rayleigh-Taylor instability. United States: N. p., Web. doi:10.1063/1.4940917.
Yan, R., Betti, R., Sanz, J., Aluie, H., Liu, B., & Frank, A.. Three-dimensional single-mode nonlinear ablative Rayleigh-Taylor instability. United States. doi:10.1063/1.4940917.
Yan, R., Betti, R., Sanz, J., Aluie, H., Liu, B., and Frank, A.. 2016. "Three-dimensional single-mode nonlinear ablative Rayleigh-Taylor instability". United States. doi:10.1063/1.4940917. https://www.osti.gov/servlets/purl/1239798.
@article{osti_1239798,
title = {Three-dimensional single-mode nonlinear ablative Rayleigh-Taylor instability},
author = {Yan, R. and Betti, R. and Sanz, J. and Aluie, H. and Liu, B. and Frank, A.},
abstractNote = {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.},
doi = {10.1063/1.4940917},
journal = {Physics of Plasmas},
number = 2,
volume = 23,
place = {United States},
year = {2016},
month = {2}
}