Suppression of Richtmyer-Meshkov Instability via Special Pairs of Shocks and Phase Transitions.

Autor: Schill WJ; Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA., Armstrong MR; Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA., Nguyen JH; Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA., Sterbentz DM; Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA., White DA; Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA., Benedict LX; Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA., Rieben RN; Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA., Hoff A; Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA., Lorenzana HE; Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA., Belof JL; Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, California 94550, USA., La Lone BM; Special Technologies Laboratory, 5520 Ekwill Street, Suite B, Santa Barbara, California 93117, USA., Staska MD; Special Technologies Laboratory, 5520 Ekwill Street, Suite B, Santa Barbara, California 93117, USA.
Jazyk: angličtina
Zdroj: Physical review letters [Phys Rev Lett] 2024 Jan 12; Vol. 132 (2), pp. 024001.
DOI: 10.1103/PhysRevLett.132.024001
Abstrakt: The classical Richtmyer-Meshkov instability (RMI) is a hydrodynamic instability characterizing the evolution of an interface following shock loading. In contrast to other hydrodynamic instabilities such as Rayleigh-Taylor, it is known for being unconditionally unstable: regardless of the direction of shock passage, any deviations from a flat interface will be amplified. In this article, we show that for negative Atwood numbers, there exist special sequences of shocks which result in a nearly perfectly suppressed instability growth. We demonstrate this principle computationally and experimentally with stepped fliers and phase transition materials. A fascinating immediate corollary is that in specific instances, a phase-transitioning material may self-suppress RMI.
Databáze: MEDLINE
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