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dc.contributor.authorZhang, Z.
dc.contributor.authorGuo, Yakun
dc.contributor.authorYang, Y.
dc.contributor.authorShi, B.
dc.contributor.authorWu, X.
dc.date.accessioned2022-03-22T14:26:42Z
dc.date.accessioned2022-04-08T09:58:06Z
dc.date.available2022-03-22T14:26:42Z
dc.date.available2022-04-08T09:58:06Z
dc.date.issued2021-12-12
dc.identifier.citationZhang Z, Guo Y, Yang Y et al (2021) Scale model experiment on local scour around submarine pipelines under bidirectional tidal currents. Journal of Marine Science and Engineering. 9(12): 1421.en_US
dc.identifier.urihttp://hdl.handle.net/10454/18864
dc.descriptionYesen_US
dc.description.abstractIn nearshore regions, bidirectional tidal flow is the main hydrodynamic factor, which induces local scour around submarine pipelines. So far, most studies on scour around submarine pipelines only consider the action of unidirectional, steady currents and little attention has been paid to the situation of bidirectional tidal currents. To deeply understand scour characteristics and produce a more accurate prediction method in bidirectional tidal currents for engineering application, a series of laboratory scale experiments were conducted in a bidirectional current flume. The experiments were carried out at a length scale of 1:20 and the tidal currents were scaled with field measurements from Cezhen pipeline in Hangzhou Bay, China. The experimental results showed that under bidirectional tidal currents, the scour depth increased significantly during the first half of the tidal cycle and it only increased slightly when the flow of the tidal velocity was near maximum flood or ebb in the following tidal cycle. Compared with scour under a unidirectional steady current, the scour profile under a bidirectional tidal current was more symmetrical, and the scour depth in a bidirectional tidal current was on average 80% of that under a unidirectional, steady current based on maximum peak velocity. Based on previous research and the present experimental data, a more accurate fitted equation to predict the tidally induced live-bed scour depth around submarine pipelines was proposed and has been verified using field data from the Cezhen pipeline.en_US
dc.language.isoenen_US
dc.rights(c) 2021 The Authors. This is an Open Access article distributed under the Creative Commons CC-BY license (https://creativecommons.org/licenses/by/4.0/)en_US
dc.subjectBidirectional tidal currenten_US
dc.subjectScale model experimenten_US
dc.subjectScouren_US
dc.subjectSubmarine pipelineen_US
dc.subjectUnidirectional currenten_US
dc.titleScale model experiment on local scour around submarine pipelines under bidirectional tidal currentsen_US
dc.status.refereedYesen_US
dc.date.Accepted2021-12-08
dc.typeArticleen_US
dc.type.versionPublished versionen_US
dc.identifier.doihttps://doi.org/10.3390/jmse9121421
dc.rights.licenseCC-BYen_US
dc.date.updated2022-03-22T14:26:43Z
refterms.dateFOA2022-04-08T09:58:29Z
dc.openaccess.statusopenAccessen_US


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