期刊
PHYSICAL REVIEW LETTERS
卷 111, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.111.184503
关键词
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资金
- DOE-BES Theoretical Condensed Matter Physics Grant [DE-FG0204ER46130]
- Novel Computational Impact on Theory and Experiment (INCITE) Grant
Cavitation bubbles occur in fluids subjected to rapid changes in pressure. We use billion-atom reactive molecular dynamics simulations on a 163 840-processor BlueGene/P supercomputer to investigate damage caused by shock-induced collapse of nanobubbles in water near an amorphous silica surface. Collapse of an empty bubble generates a high-speed nanojet, which causes pitting on the silica surface. We find pit radii are close to bubble radii, and experiments also indicate linear scaling between them. The gas-filled bubbles undergo partial collapse and, consequently, the damage on the silica surface is mitigated.
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