Nonlinear evolution of localized perturbations in the deceleration-phase Rayleigh-Taylor instability of an inertial confinement fusion capsule

2007 ◽  
Vol 14 (7) ◽  
pp. 070701 ◽  
Author(s):  
A. Schiavi ◽  
S. Atzeni
Keyword(s):  
Inertial Confinement Fusion ◽  
Nonlinear Evolution ◽  
Taylor Instability ◽  
Inertial Confinement ◽  
Deceleration Phase ◽  
Confinement Fusion ◽  
Rayleigh Taylor Instability

scholarly journals Three-dimensional simulations of the Rayleigh–Taylor instability during the deceleration phase

1994 ◽  
Vol 12 (2) ◽  
pp. 163-183 ◽  
Author(s):  
R.P.J. Town ◽  
B.J. Jones ◽  
J.D. Findlay ◽  
A.R. Bell
Keyword(s):  
Inertial Confinement Fusion ◽  
Nonlinear Evolution ◽  
Three Dimensional ◽  
Taylor Instability ◽  
Three Dimensions ◽  
Inertial Confinement ◽  
Deceleration Phase ◽  
Confinement Fusion ◽  
Rayleigh Taylor Instability ◽  
Three Dimensional Simulations

The growth of the Rayleigh-Taylor instability in three dimensions is ex amined during the deceleration phase of an inertial confinement fusion implosion. A detailed discussion of the three-dimensional hydrocode, PLATO, is presented. A review of previous calculations is given, concentrating on theshape of the R-T instability in three dimensions. Results of the growth rate during the linear phase, the saturation amplitude, and the nonlinear evolution are presented.

scholarly journals Rayleigh–Taylor instability: Modes and nonlinear evolution

1986 ◽  
Vol 4 (3-4) ◽  
pp. 473-493 ◽  
Author(s):  
H. J. Kull
Keyword(s):  
Inertial Confinement Fusion ◽  
Nonlinear Evolution ◽  
Vortex Formation ◽  
Taylor Instability ◽  
Analytical Models ◽  
Inertial Confinement ◽  
Flow Models ◽  
Instability Modes ◽  
Confinement Fusion ◽  
Rayleigh Taylor Instability

Analytical models are presented for describing modifications of the classical Rayleigh–Taylor instability theory in the context of inertial confinement fusion. The effects of stratification, finite layers, compressibility, convection and heat conduction are analysed and their mutual importance is estimated. It is found, that convective stabilization dominates for usual flow parameters and can account for growth reductions by a factor of 2 to 3. It was further possible to calculate the nonlinear evolution with the help of representative flow models and to follow the dynamics of bubble, spike and vortex formation.

scholarly journals Intuitive calculation of the relativistic Rayleigh-Taylor instability linear growth rate

2011 ◽  
Vol 29 (2) ◽  
pp. 255-257 ◽  
Author(s):  
Antoine Bret
Keyword(s):  
Growth Rate ◽  
Inertial Confinement Fusion ◽  
Linear Growth ◽  
Taylor Instability ◽  
Linear Growth Rate ◽  
Inertial Confinement ◽  
Direct Derivation ◽  
Straightforward Calculation ◽  
Confinement Fusion ◽  
Rayleigh Taylor Instability

AbstractThe Rayleigh-Taylor instability is a key process in many fields of Physics ranging from astrophysics to inertial confinement fusion. It is usually analyzed deriving the linearized fluid equations, but the physics behind the instability is not always clear. Recent works on this instability allow for an very intuitive understanding of the phenomenon and for a straightforward calculation of the linear growth rate. In this Letter, it is shown that the same reasoning allows for a direct derivation of the relativistic expression of the linear growth rate for an incompressible fluid.

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