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Simultaneous size and velocity measurements of cavitating microbubbles using interferometric laser imaging
Sapienza University of Rome.ORCID iD: 0000-0002-8038-1127
CNR-INSEAN.ORCID iD: 0000-0002-8681-5432
CNR-INSEAN.ORCID iD: 0000-0001-5396-1743
CNR-INSEAN.ORCID iD: 0000-0001-6290-0264
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2011 (English)In: Experiments in Fluids, ISSN 0723-4864, E-ISSN 1432-1114, Vol. 50, p. 1153-1167Article in journal (Refereed) Published
Abstract [en]

In this paper, interferometric laser imaging droplet sizing—ILIDS—is applied to incipient cavitation in the wake of a marine propeller model with the aim to evaluate simultaneously bubbles velocity and diameter. Until now, the feasibility of this technique has been demonstrated especially in sprays of water droplets in air where an optimal light scattering is obtained thanks to the spherical shape and to the given relative refractive index. In the present setup, to allow simultaneous size–velocity measurements, a single camera is used and the object distance over lens diameter ratio is kept as small as possible, thus increasing the size measurement resolution. These details, together with the algorithms used for image analysis at each single frame and in two consecutive frames, allow deriving cavitation bubble size and velocity distributions in the propeller wake.

Place, publisher, year, edition, pages
2011. Vol. 50, p. 1153-1167
National Category
Aerospace Engineering
Identifiers
URN: urn:nbn:se:kth:diva-223691DOI: 10.1007/s00348-011-1055-9Scopus ID: 2-s2.0-79954431509OAI: oai:DiVA.org:kth-223691DiVA, id: diva2:1186505
Note

QC 20180312

Available from: 2018-02-28 Created: 2018-02-28 Last updated: 2018-03-12Bibliographically approved

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Lacagnina, GiovanniGrizzi, SilvanoFalchi, MassimoDi Felice, FabioRomano, Giovanni Paolo
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