Wave radiation from multiple cylinders of arbitrary cross sections

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dc.check.date2021-05-17
dc.check.infoAccess to this article is restricted until 24 months after publication by request of the publisher.en
dc.contributor.authorZheng, Siming
dc.contributor.authorZhang, Yongliang
dc.contributor.authorLiu, Yingyi
dc.contributor.authorIglesias, Gregorio
dc.contributor.funderChina Postdoctoral Science Foundationen
dc.contributor.funderNational Natural Science Foundation of Chinaen
dc.contributor.funderEuropean Commissionen
dc.date.accessioned2019-06-07T10:04:24Z
dc.date.available2019-06-07T10:04:24Z
dc.date.issued2019-05-17
dc.date.updated2019-06-07T09:47:41Z
dc.description.abstractA semi-analytic model based on linear potential theory is developed to solve wave radiation from an array of truncated cylinders with arbitrary cross sections, free to oscillate independently in water of finite depth. The radiated velocity potential in the interior region below each cylinder and the exterior region extending to infinity are expressed as a series of eigenfunctions in the local cylindrical coordinate system using the method of separation of variables. They are solved subsequently by imposing the continuity condition of the velocity and pressure at the wetted surfaces of the cylinders and the fluid interfaces between adjacent regions. In the process, the Fourier series expansion method is applied to the terms regarding the arbitrary cross sections. The model is successfully validated through a case study with two caissons รข excellent agreement is obtained with a numerical model based on the boundary element method. The semi-analytic model is then applied to explore the influence of layout (angle and spacing between the two caissons) on the added-mass and radiation damping coefficients. It is found that the hydrodynamic interaction between the two caissons can increase or decrease the value of the coefficients depending on the wave frequency.en
dc.description.sponsorshipChina Postdoctoral Science Foundation (Grant No. 2016M601041; 2017T100085); National Natural Science Foundation of China (51679124; 51879144); European Commission (INTERREG V Intelligent Community Energy (ICE) Project No. 5025)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationZheng, S., Zhang, Y., Liu, Y. and Iglesias, G. (2019) 'Wave radiation from multiple cylinders of arbitrary cross sections', Ocean Engineering, 184, pp. 11-22. doi: 10.1016/j.oceaneng.2019.05.018en
dc.identifier.doi10.1016/j.oceaneng.2019.05.018en
dc.identifier.endpage22en
dc.identifier.issn0029-8018
dc.identifier.journaltitleOcean Engineeringen
dc.identifier.startpage11en
dc.identifier.urihttps://hdl.handle.net/10468/8033
dc.identifier.volume184en
dc.language.isoenen
dc.publisherElsevier Ltd.en
dc.relation.urihttp://www.sciencedirect.com/science/article/pii/S0029801819302434
dc.rightsยฉ 2019, Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license.en
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectWave radiationen
dc.subjectFloating cylinderen
dc.subjectHydrodynamic coefficientsen
dc.subjectAdded massen
dc.subjectRadiation dampingen
dc.subjectPotential flowen
dc.titleWave radiation from multiple cylinders of arbitrary cross sectionsen
dc.typeArticle (peer-reviewed)en
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