Near-surface dynamics of a gas bubble collapsing above a crevice
| Autor: | Spencer H. Bryngelson, Kevin Schmidmayer, Nikolaus A. Adams, Theresa Trummler, Tim Colonius, Steffen J. Schmidt |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Jet (fluid)
Materials science Mechanical Engineering Coordinate system Flow (psychology) Rotational symmetry Fluid Dynamics (physics.flu-dyn) FOS: Physical sciences Mechanics Physics - Fluid Dynamics Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics Mechanics of Materials Cavitation 0103 physical sciences Compressibility Erosion 010306 general physics Intensity (heat transfer) |
| Popis: | The impact of a collapsing gas bubble above rigid, notched walls is considered. Such surface crevices and imperfections often function as bubble nucleation sites, and thus have a direct relation to cavitation-induced erosion and damage structures. A generic configuration is investigated numerically using a second-order-accurate compressible multi-component flow solver in a two-dimensional axisymmetric coordinate system. Results show that the crevice geometry has a significant effect on the collapse dynamics, jet formation, subsequent wave dynamics, and interactions. The wall-pressure distribution associated with erosion potential is a direct consequence of development and intensity of these flow phenomena. 21 pages, 16 figures, submitted to the Journal of Fluid Mechanics |
| Databáze: | OpenAIRE |
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