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dc.contributor.advisorRadko, Timour
dc.contributor.authorDanieletto, Marco
dc.date.accessioned2018-10-26T19:21:17Z
dc.date.available2018-10-26T19:21:17Z
dc.date.issued2018-09
dc.identifier.urihttp://hdl.handle.net/10945/60388
dc.descriptionApproved for public release. distribution is unlimiteden_US
dc.description.abstractDrag evaluation and prediction have always been integral to maximizing the efficiency of nautical vehicles. Yet, the total friction acting on a body moving in a fluid can be difficult to predict even today. In this regard, a still poorly understood source of drag with significant effects for vessels sailing in stratified waters is the so-called dead-water phenomenon. The dead-water phenomenon represents the dramatic increase in drag associated with radiation of internal waves created by the body itself. This phenomenon has been studied in the literature for surface vessels, but little attention has been given to the extent that dead-water affects submersibles. To address this issue, our research investigates the dead-water effects on a cylindrical body, comparing laboratory and numerical outcomes for both submerged and floating body experiments. Our results show more pronounced dead-water effects for submersibles than for boats, showing greater velocity loss (a factor of 1.28) and larger power loss (a factor of 2.4). These results have major implications for military operations. In particular, they show how a thorough understanding of dead-water effects can significantly increase the performance of naval vessels by improving their maneuverability and fuel consumption characteristics.en_US
dc.description.sponsorshipNaval Research Programen_US
dc.description.urihttp://archive.org/details/immortalscienceo1094560388
dc.publisherMonterey, CA; Naval Postgraduate Schoolen_US
dc.rightsCopyright is reserved by the copyright owner.en_US
dc.titleIMMORTAL SCIENCE OF DEAD WATER: EFFECTS OF INTERNAL WAVE DRAG ON SUBMERSIBLESen_US
dc.typeThesisen_US
dc.contributor.secondreaderJoseph, John E.
dc.contributor.departmentOceanography
dc.subject.authordead wateren_US
dc.subject.authorphenomenonen_US
dc.subject.authorinternal wavesen_US
dc.subject.authorstratified fluiden_US
dc.subject.authorsubmerged bodyen_US
dc.subject.authorfloating bodyen_US
dc.description.serviceNavy, Italyen_US
etd.thesisdegree.nameMaster of Science in Physical Oceanographyen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplinePhysical Oceanographyen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.identifier.thesisid29729


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