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dc.contributor.authorMusumerci, Rosaria
dc.contributor.authorMarletta, Vincenzo
dc.contributor.authorSánchez-Arcilla Conejo, Agustín
dc.contributor.authorFoti, Enrico
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.identifier.citationMusumerci, R., Marletta, V., Sanchez-arcilla, A., Foti, E. A ferrofluid-based sensor to measure bottom shear stresses under currents and waves. "Journal of hydraulic research", Febrer 2018, vol. 56, núm. 5, p. 630-647.
dc.descriptionThis is an Accepted Manuscript of an article published by Taylor & Francis Group in Journal of Hydraulic Research on 2018, available online at:
dc.description.abstractThe measurement of the near-bottom flow characteristics is crucial to correctly understand coastal processes. To overcome some of the limits of present state-of-the-art measuring instruments, we propose a novel approach to measure bottom shear stress under currents and waves based on the exploitation of magneto-rheological fluids, named ferrofluids. In particular, the deformation of a magnetically controlled ferrofluid drop O(0.01 ml) is transformed by a conditioning circuit into an output voltage which is proportional to the bottom shear stress. Calibration curves are presented for both steady-current and regular wave conditions, over fixed and weakly mobile beds, showing that the behaviour of the proposed measuring system can be assumed linear. In the range of the investigated parameters, it is shown that the working range is comprised between 0.08 N m-2 and an upper limit which is a function of the controlling magnetic field and the flow type.
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Ports i costes
dc.subject.lcshCoast changes
dc.subject.otherBottom shear stress measurement
dc.subject.othergravity waves
dc.subject.othermeasurements and experimental methods
dc.subject.otherlaboratory studies
dc.subject.otherlaminar boundary layers
dc.subject.othermagneto-rheological fluids
dc.subject.otherRosensweig effect
dc.titleA ferrofluid-based sensor to measure bottom shear stresses under currents and waves
dc.subject.lemacCanvis costaners
dc.contributor.groupUniversitat Politècnica de Catalunya. LIM/UPC - Laboratori d'Enginyeria Marítima
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorMusumerci, R.; Marletta, V.; Sanchez-arcilla, A.; Foti, E.
upcommons.citation.publicationNameJournal of hydraulic research

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