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Explosions at the water surface

Abstract : We study the shape and dynamics of cavities created by the explosion of firecrackers at the surface of a large pool of water. Without confinement, the explosion generates a hemispherical air cavity which grows, reaches a maximum size and collapses in a generic w-shape to form a final central jet. When a rigid open tube confines the firecracker, the explosion produces a cylindrical cavity that expands without ever escaping the free end of the tube. We discuss a potential flow model, which captures most of these features
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Contributor : Denis Roura Connect in order to contact the contributor
Submitted on : Monday, August 25, 2014 - 1:06:31 PM
Last modification on : Friday, August 5, 2022 - 11:54:11 AM
Long-term archiving on: : Tuesday, April 11, 2017 - 8:14:22 PM


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Adrien Benusiglio, David Quéré, Christophe Clanet. Explosions at the water surface. Journal of Fluid Mechanics, 2014, 752 (august), pp.123-139. ⟨10.1017/jfm.2014.255⟩. ⟨hal-01057751⟩



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