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- W4256195612 abstract "Richtmyer-Meshkov Instability (RMI) is an instability that develops at the interface between fluids of contrasting densities when impacted by a shock wave. Its applications include inertial confinement fusion, supernovae explosions, and the evolution of blast waves. We systematically study the effect of the adiabatic index of the fluids on the dynamics of strong-shock driven flows, particularly the amount of shock energy available for interfacial mixing. Only limited information is currently available about the dynamic properties of matter at these extreme regimes. Smooth Particle Hydrodynamics simulations are employed to ensure accurate shock capturing and interface tracking. A range of adiabatic indexes is considered, approaching limits which, to the best of the author’s knowledge, have never been considered before. We analyse the effect of the adiabatic indexes on the interface speed and growth-rate immediately after the shock passage. The simulation results are compared, wherever possible, with rigorous theories and with experiments, achieving good quantitative and qualitative agreement. We find that the more challenging cases for simulations arise where the adiabatic indexes are further apart, and that the initial growth rate is a non-monotone function of the initial perturbation amplitude, which holds across all adiabatic indexes of the fluids considered. The applications of these findings on experiment design are discussed." @default.
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- W4256195612 date "2021-01-01" @default.
- W4256195612 modified "2023-10-17" @default.
- W4256195612 title "Effect of Adiabatic Index on Richtmyer-Meshkov Flows Induced by Strong Shocks" @default.
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- W4256195612 doi "https://doi.org/10.1007/978-3-030-62497-2_18" @default.
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