The velocity field underneath a breaking rogue wave:Laboratory experiments versus numerical simulations

Alberello, Alberto and Iafrati, Alessandro (2019) The velocity field underneath a breaking rogue wave:Laboratory experiments versus numerical simulations. Fluids, 4 (2). ISSN 2311-5521

[img] PDF (Published_Version) - Published Version
Available under License Creative Commons Attribution.

Download (3MB)

Abstract

Wave breaking is the most characteristic feature of the ocean surface. Physical investigations (in the field and at laboratory scale) and numerical simulations have studied the driving mechanisms that lead to wave breaking and its effects on hydrodynamic loads on marine structures. Despite computational advances, accurate numerical simulations of the complex breaking process remain challenging. Validation of numerical codes is routinely performed against experimental observations of the surface elevation. However, it is still uncertain whether simulations can accurately reproduce the velocity field under breaking waves due to the lack of ad-hoc measurements. In the present work, the velocity field recorded with a Particle Image Velocimetry method during experiments conducted in a unidirectional wave tank is directly compared to the results of a corresponding numerical simulation performed with a Navier-Stokes (NS) solver. It is found that simulations underpredict the velocity close to the wave crest compared to measurements. Higher resolutions seem necessary in order to capture the most relevant details of the flow.

Item Type: Article
Additional Information: Funding Information: Acknowledgments: A.A. acknowledges support from the Air-Sea-Ice Lab Project. A.A. thanks Alessandro Toffoli for interesting discussions. Publisher Copyright: © 2019 by the authors. Licensee MDPI, Basel, Switzerland.
Uncontrolled Keywords: cfd,navier-stokes,particle image velocimetry,water waves,wave breaking,waves,condensed matter physics,mechanical engineering,fluid flow and transfer processes,sdg 14 - life below water ,/dk/atira/pure/subjectarea/asjc/3100/3104
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 13 Nov 2021 01:51
Last Modified: 15 Nov 2021 01:43
URI: https://ueaeprints.uea.ac.uk/id/eprint/82079
DOI: 10.3390/fluids4020068

Actions (login required)

View Item View Item