Abstract
The events following the impulsive acceleration (e.g. by a shock wave) of the interface between gases of different acoustic impedance can be classified into two main categories: the refraction of the shock (involving a transmitted and a reflected shock and the distortion of their shapes) and the baroclinic generation of vorticity at the interface consequent to the non-zero cross product between the density gradient associated with the interface and the pressure gradient across the shock wave. The resulting flow field leads to the unbounded growth of any perturbations initially present on the interface, a phenomenon called the Richtmyer-Meshkov instability (RMI). Because it originates from baroclinic vorticity, the RMI can be interpreted as the “impulsive analog” of the Rayleigh-Taylor instability (RTI) which develops at an interface subjected to sustained acceleration.
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Bonazza, R. (2017). A Review of the Richtmyer-Meshkov Instability from an Experimental Perspective. In: Ben-Dor, G., Sadot, O., Igra, O. (eds) 30th International Symposium on Shock Waves 1. Springer, Cham. https://doi.org/10.1007/978-3-319-46213-4_3
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DOI: https://doi.org/10.1007/978-3-319-46213-4_3
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