Near-surface dynamics of a gas bubble collapsing above a crevice
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...
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| creator | Trummler, Theresa Bryngelson, Spencer H Schmidmayer, Kevin Schmidt, Steffen J Colonius, Tim Adams, Nikolaus A |
| description | 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. |
| doi_str_mv | 10.48550/arxiv.1912.07022 |
| format | Article |
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| language | eng |
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| source | Freely Accessible Journals; arXiv.org |
| subjects | Axisymmetric flow Bubbles Cavitation erosion Compressibility Coordinates Nucleation Physics - Fluid Dynamics Pressure distribution Stress concentration Structural damage Surface dynamics Two dimensional flow |
| title | Near-surface dynamics of a gas bubble collapsing above a crevice |
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