Numerical analysis of shipping water impacting a step structure

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dc.contributor.authorKhojasteh, Danial
dc.contributor.authorTavakoli, Sasan
dc.contributor.authorDashtimanesh, Abbas
dc.contributor.authorDolatshah, Azam
dc.contributor.authorHuang, Luofeng
dc.contributor.authorGlamore, William
dc.contributor.authorSadat-Noori, Mahmood
dc.contributor.authorIglesias, Gregorio
dc.contributor.funderUniversity of New South Walesen
dc.contributor.funderUniversity of Melbourneen
dc.contributor.funderSwinburne University of Technologyen
dc.contributor.funderNortek AS, Norwayen
dc.date.accessioned2020-05-19T09:08:20Z
dc.date.available2020-05-19T09:08:20Z
dc.date.issued2020-06-05
dc.date.updated2020-05-19T08:56:23Z
dc.description.abstractShipping water, the flow washing over and impacting the upper decks of ships and offshore structures, occurs frequently during their service life and often causes structural problems. For engineers to design safe floating structures subjected to shipping water it is essential to gain an in-depth understanding of its depth and flow field, and the resulting impact forces. In this work, Computational Fluid Dynamics (CFD) is applied to understand the physics of shipping water washing over a stepped platform. We find that the most accurate solutions are obtained with the k-ϵ turbulence closure. The hydrodynamic load generated by the shipping water is found to strongly depends on the kinematic energy of the water hitting the step. It is shown that with smaller values of the freeboard a more dynamic flow ensues, with a stronger vortex and larger velocity gradient resulting in deeper shipping water and a larger impact force.en
dc.description.sponsorshipUniversity of New South Wales (Scientia PhD Scholarship); University of Melbourne (Melbourne Research Scholarship); Swinburne University of Technology (Postgraduate Research Award)en
dc.description.statusPeer revieweden
dc.description.versionPublished Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationKhojasteh, D., Tavakoli, S., Dashtimanesh, A., Dolatshah, A., Huang, L., Glamore, W., Sadat-Noori, M. and Iglesias, G. (2020) 'Numerical analysis of shipping water impacting a step structure', Ocean Engineering, 209, 107517 (10pp). doi: 10.1016/j.oceaneng.2020.107517en
dc.identifier.doi10.1016/j.oceaneng.2020.107517
dc.identifier.issn0029-8018
dc.identifier.journaltitleOcean Engineeringen
dc.identifier.urihttps://hdl.handle.net/10468/9982
dc.language.isoenen
dc.publisherElsevier B.V.en
dc.rights© 2020, The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectGreen wateren
dc.subjectFloating structuresen
dc.subjectDam-breaken
dc.subjectImpact forceen
dc.subjectCFDen
dc.subjectOpenFoamen
dc.titleNumerical analysis of shipping water impacting a step structureen
dc.typeArticle (peer-reviewed)en
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