Granular eruptions
| Autor: | Devaraj van der Meer, Gert-Wim Bruggert, Michel Versluis, E.G.C Koene, René Mikkelsen, Detlef Lohse, Ko van der Weele |
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| Přispěvatelé: | Faculty of Science and Technology, Physics of Fluids |
| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics Splash geography geography.geographical_feature_category Mechanical Engineering Bubble Computational Mechanics Astrophysics Mechanics Condensed Matter Physics Physics::Geophysics Condensed Matter::Soft Condensed Matter Physics::Fluid Dynamics Impact velocity Volcano Mechanics of Materials Boiling Fluid motion Air bubble |
| Zdroj: | Physics of fluids, 14(9). American Institute of Physics |
| ISSN: | 1070-6631 |
| DOI: | 10.1063/1.4739204 |
| Popis: | Upon impact, sand is blown away in all directions, forming a splash. The ball digs a cylindrical void in the sand and the jet is formed when this void collapses: The focused sand pressure pushes the jet straight up into the air. When the jet comes down again, it breaks up into fragments, i.e., granular clusters. For sufficiently high impact velocity, air is entrained by the collapsing void, forming an air bubble in the sand. This bubble slowly rises to the surface, and upon reaching it causes a granular eruption. This looks like a boiling liquid, or even a volcano! Gallery of Fluid Motion Award-winning entry 2002 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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