Further Experimental Investigations of the Richtmyer-Meshkov Instability

Details Further Experimental Investigations of the Richtmyer-Meshkov Instability Further Experimental Investigations of the Richtmyer-Meshkov Instability

Nov 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aps..dfd..hc05m&link_type=abstract

American Physical Society, Division of Fluid Dynamics Meeting, November 24-26, 1996, abstract #HC.05

Physics

Fluid Dynamics

Scientific paper

We report on further experimental investigations of the Richtmyer-Meshkov instability from an initially nonlinear perturbation, conducted on the Nova laser. The experiments use a Nova hohlraum as a driver source for a strong shock in a miniature shock tube attached to the hohlraum. The shock tube contains brominated plastic and low-density carbon foam as the two working fluids, with a micro-machined sawtooth interface between them serving as the perturbation. The shock, upon crossing the interface, instigates the Richtmyer-Meshkov instability from the perturbation. The resulting growth of the mixing layer is diagnosed radiographically. We have previously reported upon a results from a single wavelength and amplitude of perturbation (T. A. Peyser et al., Phys. Rev. Lett.) 75, 2332 (1996).. A study of the effect of variations in amplitude and wavelength on the nonlinear growth of the instability will be discussed.

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