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arXiv · 1109.3175

Confined Shocks inside Isolated Liquid Volumes -- A New Path of Erosion?

Danail Obreschkow·Nicolas Dorsaz·Philippe Kobel·Aurele de Bosset·Marc Tinguely·John Field·Mohamed Farhat
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Abstract

The unique confinement of shock waves inside isolated liquid volumes amplifies the density of shock-liquid interactions. We investigate this universal principle through an interdisciplinary study of shock-induced cavitation inside liquid volumes, isolated in 2 and 3 dimensions. By combining high-speed visualizations of ideal water drops realized in microgravity with smoothed particle simulations we evidence strong shock-induced cavitation at the focus of the confined shocks. We extend this analysis to ground-observations of jets and drops using an analytic model, and argue that cavitation caused by trapped shocks offers a distinct mechanism of erosion in high-speed impacts (>100 m/s).

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Danail Obreschkow, Nicolas Dorsaz, Philippe Kobel, Aurele de Bosset, Marc Tinguely, John Field, Mohamed Farhat. 2011-09-28. Confined Shocks inside Isolated Liquid Volumes -- A New Path of Erosion?. https://doi.org/10.1063/1.3647583

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