Near-surface dynamics of a gas bubble collapsing above a crevice
Abstract
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.
Additional Information
© The Author(s), 2020. Published by Cambridge University Press. Received 13 December 2019; revised 24 March 2020; accepted 23 May 2020. Published online by Cambridge University Press: 21 July 2020. The research stay of T.T. at Caltech was supported by the Deutscher Akademischer Austauschdienst (DAAD), the TUM Graduate School, and the ERC Advanced Grant NANOSHOCK (2015). S.H.B., K.S., and T.C. acknowledge support from the US Office of Naval Research under grant numbers N0014-18-1-2625 and N0014-17-1-2676. The authors report no conflict of interest.Attached Files
Supplemental Material - S0022112020004322sup013.pdf
Supplemental Material - urn_cambridge.org_id_binary_20200721110602702-0856_S0022112020004322sup001.mp4
Supplemental Material - urn_cambridge.org_id_binary_20200721110753696-0599_S0022112020004322sup002.mp4
Supplemental Material - urn_cambridge.org_id_binary_20200721110923786-0634_S0022112020004322sup003.mp4
Supplemental Material - urn_cambridge.org_id_binary_20200721111053840-0278_S0022112020004322sup004.mp4
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Supplemental Material - urn_cambridge.org_id_binary_20200721112224268-0498_S0022112020004322sup011.mp4
Supplemental Material - urn_cambridge.org_id_binary_20200721112354271-0546_S0022112020004322sup012.mp4
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Additional details
- Eprint ID
- 104774
- DOI
- 10.1017/jfm.2020.432
- Resolver ID
- CaltechAUTHORS:20200806-103840041
- Deutscher Akademischer Austauschdienst (DAAD)
- Technical University of Munich
- European Research Council (ERC)
- NANOSHOCK
- Office of Naval Research (ONR)
- N0014-18-1-2625
- Office of Naval Research (ONR)
- N0014-17-1-2676
- Created
-
2020-08-06Created from EPrint's datestamp field
- Updated
-
2021-11-16Created from EPrint's last_modified field