Laboratory study of the wave-induced mean flow and set-down in unidirectional surface gravity wavepackets on finite water depth
dc.contributor.author | Calvert, R | |
dc.contributor.author | Whittaker, C | |
dc.contributor.author | Raby, Alison | |
dc.contributor.author | Taylor, PH | |
dc.contributor.author | Borthwick, Alistair | |
dc.contributor.author | van den Bremer, T | |
dc.date.accessioned | 2019-09-02T08:41:46Z | |
dc.date.issued | 2019-11-22 | |
dc.identifier.issn | 2469-990X | |
dc.identifier.issn | 2469-990X | |
dc.identifier.other | 114801 | |
dc.identifier.uri | http://hdl.handle.net/10026.1/14843 | |
dc.description | No embargo required | |
dc.description.abstract |
The net movement of Lagrangian particles under water waves comprises a Stokes drift in the direction of wave propagation and an Eulerian return flow in the opposing direction. Accurate prediction of the Eulerian return flow in the ocean is of importance in modeling the transport of plastic pollution, oil, wreckage, and sediment. Herein, we derive a multiple-scales solution for the Eulerian mean flow under wave packets that is valid for all water depths, relative to both the length of the wave and the length of the wave packet. To validate this solution, we carry out particle tracking velocimetry experiments in a long flume to extract the mean motion from Lagrangian seeding particles under wave packets, finding good agreement. The extraction technique is able to deal with small background motion and subharmonic error waves associated with wave generation by the paddle, the latter being relatively large in finite-depth flume experiments. In finite depth, the return flow is forced by both the divergence of the Stokes transport on the wave-packet scale and the formation of a non-negligible mean set-down underneath the packet, which acts like a bounding streamtube in the form of a convergent-divergent duct. The magnitude of the horizontal return flow is thus enhanced, with particular relevance to transport in the finite-depth coastal environment. | |
dc.format.extent | 114801- | |
dc.language | en | |
dc.language.iso | en | |
dc.publisher | American Physical Society | |
dc.title | Laboratory study of the wave-induced mean flow and set-down in unidirectional surface gravity wavepackets on finite water depth | |
dc.type | journal-article | |
dc.type | Journal Article | |
plymouth.author-url | https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000498898900004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008 | |
plymouth.issue | 11 | |
plymouth.volume | 4 | |
plymouth.publication-status | Published online | |
plymouth.journal | Physical Review Fluids | |
dc.identifier.doi | 10.1103/PhysRevFluids.4.114801 | |
plymouth.organisational-group | /Plymouth | |
plymouth.organisational-group | /Plymouth/Admin Group - REF | |
plymouth.organisational-group | /Plymouth/Admin Group - REF/REF Admin Group - FoSE | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering/School of Engineering, Computing and Mathematics | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA/UoA12 Engineering | |
plymouth.organisational-group | /Plymouth/Users by role | |
plymouth.organisational-group | /Plymouth/Users by role/Academics | |
plymouth.organisational-group | /Plymouth/Users by role/Researchers in ResearchFish submission | |
dcterms.dateAccepted | 2019-08-21 | |
dc.rights.embargodate | 2019-12-14 | |
dc.identifier.eissn | 2469-990X | |
dc.rights.embargoperiod | Not known | |
rioxxterms.versionofrecord | 10.1103/PhysRevFluids.4.114801 | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
rioxxterms.type | Journal Article/Review |