Comparison of Tomo-PIV and 3D-PTV for microfluidic flows

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dc.contributor.authorKim, Hyoungsooko
dc.contributor.authorWesterweel, Jerryko
dc.contributor.authorElsinga, Gerrit E.ko
dc.date.accessioned2017-03-28T06:58:50Z-
dc.date.available2017-03-28T06:58:50Z-
dc.date.created2017-03-03-
dc.date.created2017-03-03-
dc.date.issued2013-02-
dc.identifier.citationMEASUREMENT SCIENCE AND TECHNOLOGY, v.24, no.2-
dc.identifier.issn0957-0233-
dc.identifier.urihttp://hdl.handle.net/10203/221031-
dc.description.abstractTwo 3D-3C velocimetry techniques for micro-scale measurements are compared: tomographic particle image velocimetry (Tomo-PIV) and 3D particle-tracking velocimetry (3D-PTV). Both methods are applied to experimental data from a confined shear-driven liquid droplet over a moving surface. The droplet has 200 mu m height and 2 mm diameter. Micro 3D-PTV and Tomo-PIV are used to obtain the tracer particle distribution and the flow velocity field for the same set of images. It is shown that the reconstructed particle distributions are distinctly different, where Tomo-PIV returns a nearly uniform distribution over the height of the volume, as expected, and PTV reveals a clear peak in the particle distribution near the plane of focus. In Tomo-PIV, however, the reconstructed particle peak intensity decreases in proportion to the distance from the plane of focus. Due to the differences in particle distributions, the measured flow velocities are also different. In particular, we observe Tomo-PIV to be in closer agreement with mass conservation. Furthermore, the random noise level is found to increase with distance to the plane of focus at a higher rate for 3D-PTV as compared to Tomo-PIV. Thus, for a given noise threshold value, the latter method can measure reliably over a thicker volume.-
dc.languageEnglish-
dc.publisherIOP PUBLISHING LTD-
dc.subjectPARTICLE IMAGE VELOCIMETRY-
dc.subjectMICRO-PIV-
dc.subjectTRACKING-
dc.titleComparison of Tomo-PIV and 3D-PTV for microfluidic flows-
dc.typeArticle-
dc.identifier.wosid000313750300008-
dc.identifier.scopusid2-s2.0-84872736137-
dc.type.rimsART-
dc.citation.volume24-
dc.citation.issue2-
dc.citation.publicationnameMEASUREMENT SCIENCE AND TECHNOLOGY-
dc.identifier.doi10.1088/0957-0233/24/2/024007-
dc.contributor.localauthorKim, Hyoungsoo-
dc.contributor.nonIdAuthorWesterweel, Jerry-
dc.contributor.nonIdAuthorElsinga, Gerrit E.-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorinstrumentation and measurement methods in fluid dynamics-
dc.subject.keywordAuthorvelocity measurements-
dc.subject.keywordAuthorflow visualization and imaging-
dc.subject.keywordAuthorimage reconstruction-
dc.subject.keywordAuthortomography-
dc.subject.keywordAuthorfluidics-
dc.subject.keywordAuthormicro- and nano-scale flow phenomena-
dc.subject.keywordAuthorliquid thin films-
dc.subject.keywordPlusPARTICLE IMAGE VELOCIMETRY-
dc.subject.keywordPlusMICRO-PIV-
dc.subject.keywordPlusTRACKING-
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