Experimental investigation of the three-dimensional interaction of a strong shock with a spherical density inhomogeneity

被引：38

作者：

Robey, HF ^{[1
]}

Perry, TS

Klein, RI

Kane, JO

Greenough, JA

Boehly, TR

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[2] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[3] Univ Rochester, Laser Energet Lab, Rochester, NY 14623 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.89.085001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Laser-driven experiments are described which probe the interaction of a very strong shock with a spherical density inhomogeneity. The interaction is viewed from two orthogonal directions enabling visualization of both the initial distortion of the sphere into a double vortex ring structure as well as the onset of an azimuthal instability that ultimately results in the three-dimensional breakup of the ring. The experimental results are compared with 3D numerical simulations and are shown to be in remarkable agreement with the incompressible theory of Widnall et al. [J. Fluid Mech. 66, 35 (1974)].

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页码：085001/1 / 085001/4

页数：4

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