Visualization of microscale cavitating flow regimes via particle shadow sizing imaging and vision based estimation of the cone angle

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dc.authorid0000-0001-7739-2346en_US
dc.authorid0000-0001-6283-6717en_US
dc.contributor.authorGhorbani, Morteza
dc.contributor.authorAlcan, Gokhan
dc.contributor.authorUnel, Mustafa
dc.contributor.authorGozuacik, Devrim
dc.contributor.authorEkici, Sinan
dc.contributor.authorUvet, Huseyin
dc.contributor.authorSabanovic, Asif
dc.contributor.authorKosar, Ali
dc.date.accessioned2024-07-12T21:46:57Z
dc.date.available2024-07-12T21:46:57Z
dc.date.issued2016en_US
dc.departmentMaltepe Üniversitesien_US
dc.description.abstractRecent studies show the destructive effect of the energy released from the collapse of cavitation bubbles, which are generated in micro domains, on the targeted surfaces. The cavitation phenomenon occurs at low local pressures within flow restrictive elements and strongly affects fluid flow regimes inside microchannels which results in spray formation. Extended cavitation bubbles toward the outlet of the microchannel, droplet evolution, and spray breakup are among crucial mechanisms to be considered in spray structure. In this study, various spray structures under the effect of hydrodynamic cavitation were recorded using a high speed visualization system. Acquired images were analyzed and characterized using several image processing algorithms. In this regard, the fluid flow with ascending upstream pressures from 10 to 120 bar were passed through a microchannel with an inner diameter of 0.152 mm. The spray at the outlet of the microchannel was analyzed for these pressures in four different segments. Particle Shadow Sizing (PSS) imaging and several image processing techniques such as contrast stretching, thresholding and morphological operations were employed to identify the flow regimes in the separated segments. In addition, a vision based estimation technique that utilizes a Kalman filter was developed to estimate cone angle of the spray. Furthermore, classification of fluid flow regimes and morphological characteristics of the spray structure were outlined based on the cavitation number. (C) 2016 Published by Elsevier Inc.en_US
dc.description.sponsorshipTUBITAK (The Scientific and Technological Research Council of Turkey) Support Program for Scientific and Technological Research Projects Grants [113S092]; TUBITAK (The Scientific and Technological Research Council of Turkey) Support Program for Scientific and Technological Research Projects Grants [113S092]en_US
dc.description.sponsorshipThis work was supported by TUBITAK (The Scientific and Technological Research Council of Turkey) Support Program for Scientific and Technological Research Projects Grants, 113S092. Equipment utilization support from Sabanci University Nanotechnology Research and Applications Center (SUNUM) is also gratefully appreciated.en_US
dc.identifier.doi10.1016/j.expthermflusci.2016.04.026
dc.identifier.endpage333en_US
dc.identifier.issn0894-1777
dc.identifier.issn1879-2286
dc.identifier.scopus2-s2.0-84976531651en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage322en_US
dc.identifier.urihttps://dx.doi.org/10.1016/j.expthermflusci.2016.04.026
dc.identifier.urihttps://hdl.handle.net/20.500.12415/7975
dc.identifier.volume78en_US
dc.identifier.wosWOS:000381835200030en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoenen_US
dc.publisherELSEVIER SCIENCE INCen_US
dc.relation.ispartofEXPERIMENTAL THERMAL AND FLUID SCIENCEen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmzKY00904
dc.subjectCavitationen_US
dc.subjectCone angleen_US
dc.subjectKalman filteren_US
dc.subjectMicrochannelen_US
dc.subjectSprayen_US
dc.subjectVisualizationen_US
dc.titleVisualization of microscale cavitating flow regimes via particle shadow sizing imaging and vision based estimation of the cone angleen_US
dc.typeArticle
dspace.entity.typePublication

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