Investigation of the Rayleigh-Taylor and Richtmyer-Meshkov instabilities

Bonazza, Riccardo ; Anderson, Mark ; Oakley, Jason

University of Wisconsin--Madison

关键词: Hydrodynamic Instabilities;    Inertial Confinement Fusion;    70 Plasma Physics And Fusion Technology Rayleigh-Taylor Instability;    Target Implosion.;    Richtmyer-Meshkov Instability;   

DOI  :  10.2172/894506
RP-ID  :  DOE/FG/00061-F
RP-ID  :  FG52-03NA00061
RP-ID  :  894506

美国|英语

来源: UNT Digital Library

【 摘 要 】

The present research program is centered on the experimental and numerical study of two instabilities that develop at the interface between two different fluids when the interface experiences an impulsive or a constant acceleration. The instabilities, called the Richtmyer-Meshkov and Rayleigh-Taylor instability, respectively, adversely affect target implosion in experiments aimed at the achievement of nuclear fusion by inertial confinement by causing the nuclear fuel contained in a target and the shell material to mix, leading to contamination of the fuel, yield reduction or no ignition at all. The laboratory experiments summarized in this report include shock tube experiments to study a shock-accelerated bubble and a shock-accelerated 2-D sinusoidal interface; and experiments based on the use of magnetorheological fluids for the study of the Rayleigh-Taylor instability. Computational experiments based on the shock tube experimental conditions are also reported.