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dc.contributor.authorYang, S.
dc.contributor.authorGuo, Yakun
dc.contributor.authorShi, B.
dc.contributor.authorYu, G.
dc.contributor.authorYang, L.
dc.contributor.authorZhang, M.
dc.date.accessioned2022-03-22T14:07:21Z
dc.date.accessioned2022-04-08T10:49:26Z
dc.date.available2022-03-22T14:07:21Z
dc.date.available2022-04-08T10:49:26Z
dc.date.issued2021-11-15
dc.identifier.citationYang S, Guo Y, Shi B et al (2021) Numerical investigation of the influence of the small pipeline on local scour morphology around the piggyback pipeline. Ocean Engineering. 240: 109973.en_US
dc.identifier.urihttp://hdl.handle.net/10454/18866
dc.descriptionYesen_US
dc.description.abstractThis paper presents the results from a numerical simulation study to investigate the effect of the position angle (α) of small pipeline on the local scour and the hydrodynamic force around the piggyback pipeline in steady current conditions. Results show that the local scour depth around the piggyback pipeline increases first and then decreases with the increase of α. The scour depth and width reach the maximum values as the small pipe locates at the top of the large pipeline (i.e. α = 90°). The scour around the piggyback pipeline is accelerated when α ranges between 30° and 165°, while for α = 0°–30° and 165°–180°, the local scour around the piggyback pipeline is inhibited. Furthermore, the small pipe placed in front of the large pipe has slightly larger effect on the scour hole morphology than that when it is placed behind the large pipe. The drag force coefficient increases first and reaches the maximum value at α = 75°, and then decreases with the increase of α. Eventually the drag force coefficient approaches roughly a constant. The lift force coefficient is approximately a V-shaped with the variation of α and has the maximum value at α = 90°.en_US
dc.language.isoenen_US
dc.rights© 2021 Elsevier. Reproduced in accordance with the publisher's self-archiving policy. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
dc.subjectHydrodynamic forcesen_US
dc.subjectNumerical modelsen_US
dc.subjectPiggyback pipelinesen_US
dc.subjectPosition angleen_US
dc.subjectScouren_US
dc.subjectSteady flowen_US
dc.titleNumerical investigation of the influence of the small pipeline on local scour morphology around the piggyback pipelineen_US
dc.status.refereedYesen_US
dc.date.application2021-10-08
dc.typeArticleen_US
dc.type.versionAccepted manuscripten_US
dc.identifier.doihttps://doi.org/10.1016/j.oceaneng.2021.109973
dc.rights.licenseCC-BY-NC-ND
dc.date.updated2022-03-22T14:07:24Z
refterms.dateFOA2022-04-08T10:49:46Z
dc.openaccess.statusopenAccessen_US
dc.date.accepted2021-10-02


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