Self-consistent stability analysis of ablation fronts with large Froude numbers

被引：140

作者：

Goncharov, VN ^{[1
]}

Betti, R ^{[1
]}

McCrory, RL ^{[1
]}

Sorotokin, P ^{[1
]}

Verdon, CP ^{[1
]}

机构：

[1] UNIV ROCHESTER, DEPT MECH ENGN, ROCHESTER, NY 14623 USA

来源：

PHYSICS OF PLASMAS | 1996年 / 3卷 / 04期

关键词：

D O I：

10.1063/1.871730

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

The linear stability analysis of accelerated ablation fronts is carried out self-consistently by retaining the effect of finite thermal conductivity. Its temperature dependence is included through a power law (kappa similar to T-nu) with a power index nu > 1. The growth rate is derived for Fr much greater than 1 (Fr is the Froude number) by using a boundary layer analysis. The self-consistent Atwood number and the ablative stabilization term depend on the mode wavelength, the density gradient scale length, and the power index nu. The analytic formula for the growth rate is shown to be in excellent agreement with the numerical fit of Takabe, Mima, Montierth, and Morse [Phys. Fluids 28, 3676 (1985)] for nu = 2.5 and the numerical results of Kull [Phys. Fluids B 1, 170 (1989)] over a large range of nu's. (C) 1996 American Institute of Physics.

引用

页码：1402 / 1414

页数：13

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