The onset of cavitation during the collision of a sphere with a wetted surface
Type
ArticleAuthors
Mansoor, Mohammad M.
Uddin, Jamal
Marston, Jeremy
Vakarelski, Ivan Uriev

Thoroddsen, Sigurdur T

KAUST Department
High-Speed Fluids Imaging LaboratoryMechanical Engineering Program
Physical Science and Engineering (PSE) Division
Date
2014-01-05Online Publication Date
2014-01-05Print Publication Date
2014-01Permanent link to this record
http://hdl.handle.net/10754/563303
Metadata
Show full item recordAbstract
We investigate the onset of cavitation during the collision of a sphere with a solid surface covered with a layer of Newtonian liquid. The conventional theory dictates cavitation to initiate during depressurization, i.e. when the sphere rebounds from the solid surface. Using synchronized dual-view high-speed imaging, we provide conclusive experimental evidence that confirms this scenario- namely-that cavitation occurs only after the sphere makes initial contact with the solid surface. Similar to previous experimental observations for spheres released above the liquid surface, bubbles are formed on the sphere surface during entry into the liquid layer. These were found to squeeze radially outwards with the liquid flow as the sphere approached the solid surface, producing an annular bubble structure unrelated to cavitation. In contrast, spheres released below the liquid surface did not exhibit these patterns. © Springer-Verlag Berlin Heidelberg 2014.Citation
Mansoor, M. M., Uddin, J., Marston, J. O., Vakarelski, I. U., & Thoroddsen, S. T. (2014). The onset of cavitation during the collision of a sphere with a wetted surface. Experiments in Fluids, 55(1). doi:10.1007/s00348-013-1648-6Publisher
Springer NatureJournal
Experiments in Fluidsae974a485f413a2113503eed53cd6c53
10.1007/s00348-013-1648-6