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A ferrofluid-based sensor to measure bottom shear stresses under currents and waves

Author
Musumerci, R.; Marletta, V.; Sanchez-arcilla, A.; Foti, E.
Type of activity
Journal article
Journal
Journal of hydraulic research
Date of publication
2018-02
Volume
56
Number
5
First page
630
Last page
647
DOI
https://doi.org/10.1080/00221686.2017.1397779 Open in new window
Repository
http://hdl.handle.net/2117/117113 Open in new window
URL
https://www.tandfonline.com/doi/abs/10.1080/00221686.2017.1397779 Open in new window
Abstract
The 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 volta...
Citation
Musumerci, 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.
Keywords
Bottom shear stress measurement, Rosensweig effect, gravity waves, instrumentation, laboratory studies, laminar boundary layers, magneto-rheological fluids, measurements and experimental methods
Group of research
LIM/UPC - Maritime Engineering Laboratory

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