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dc.contributor.authorEtemad Shahidi, Amiren_US
dc.contributor.authorH. Bass, Jacoen_US
dc.contributor.authorKazeminezhad, Mohammad Hosseinen_US
dc.contributor.authorYeganeh-Bakhtiary, Abbasen_US
dc.date.accessioned2017-04-04T22:59:49Z
dc.date.available2017-04-04T22:59:49Z
dc.date.issued2012en_US
dc.date.modified2013-06-03T04:38:00Z
dc.identifier.issn07339429en_US
dc.identifier.doi10.1061/(ASCE)HY.1943-7900.0000540en_US
dc.identifier.urihttp://hdl.handle.net/10072/47164
dc.description.abstractAn Eulerian two-phase flow model was presented and employed to investigate wave-induced tunnel scour beneath marine pipelines. The model is based on the Euler-Euler coupled governing equations for the fluid and sediment phases, i.e., time-averaged continuity and momentum equations were solved for both phases with a modified k e turbulence closure for the fluid phase. Fluid-particle, particle-particle, and fluid-structure interactions were implemented in the simulation. The model accounts for the interphase momentum exchange by considering the drag, lift, and added mass forces. The flow model was validated against an oscillatory flow around an isolated cylinder and a cylinder close to a rigid wall. The two-phase model was also validated against an oscillatory sheet-flow motion above a plane bed. Then, the two-phase model was used to simulate the wave-induced tunnel scour beneath the pipeline laid on a plane erodible bed.Comparison between the numerical results and experimental measurements indicates that the model simulates the bed profile successfully during the tunnel scour stage. Investigations revealed that the tremendous sediment transport takes place during the tunnel scour stage under high turbulence intensity. A phase-lag was observed between the flow velocity in the scour hole and the free stream velocity.en_US
dc.description.peerreviewedYesen_US
dc.description.publicationstatusYesen_US
dc.format.extent322601 bytes
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.language.isoen_US
dc.publisherAmerican Society of Civil Engineersen_US
dc.publisher.placeUnited Statesen_US
dc.relation.ispartofstudentpublicationNen_US
dc.relation.ispartofpagefrom517en_US
dc.relation.ispartofpageto529en_US
dc.relation.ispartofissue6en_US
dc.relation.ispartofjournalJournal of Hydraulic Engineeringen_US
dc.relation.ispartofvolume138en_US
dc.rights.retentionYen_US
dc.subject.fieldofresearchCivil Engineering not elsewhere classifieden_US
dc.subject.fieldofresearchcode090599en_US
dc.titleTwo-Phase Simulation of Wave-Induced Tunnel Scour beneath Marine Pipelinesen_US
dc.typeJournal articleen_US
dc.type.descriptionC1 - Peer Reviewed (HERDC)en_US
dc.type.codeC - Journal Articlesen_US
gro.rights.copyrightCopyright 2012 American Society of Civil Engineers (ASCE). This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.en_US
gro.date.issued2012
gro.hasfulltextFull Text


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