Defocusing Digital Particle Image Velocimetry: A 3-Component 3-Dimensional DPIV Measurement Technique. Application to Bubbly Flows (Articolo in rivista)

Type
Label
  • Defocusing Digital Particle Image Velocimetry: A 3-Component 3-Dimensional DPIV Measurement Technique. Application to Bubbly Flows (Articolo in rivista) (literal)
Anno
  • 2000-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s003480070010 (literal)
Alternative label
  • Pereira F., Gharib M., Dabiri D., Modarress D. (2000)
    Defocusing Digital Particle Image Velocimetry: A 3-Component 3-Dimensional DPIV Measurement Technique. Application to Bubbly Flows
    in Experiments in fluids (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Pereira F., Gharib M., Dabiri D., Modarress D. (literal)
Pagina inizio
  • S78 (literal)
Pagina fine
  • S84 (literal)
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  • Brevetto US 7,006,132 Commercializzato da TSI Inc (literal)
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  • http://link.springer.com/article/10.1007%2Fs003480070010 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 29 (literal)
Rivista
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  • 7 (literal)
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  • S (literal)
Note
  • ISI Web of Science (WOS) (literal)
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Center for Quantitative Visualization, California Institute of Technology, Pasadena, CA 91125, United States (literal)
Titolo
  • Defocusing Digital Particle Image Velocimetry: A 3-Component 3-Dimensional DPIV Measurement Technique. Application to Bubbly Flows (literal)
Abstract
  • This paper describes a three-dimensional imaging system for the purpose of mapping two-phase bubbly flows. The defocusing digital particle image ve-locimetry instrument records high resolution images of the bubble field and is capable of providing bubble size and bubble location within a cubic foot volume. The velocity ield is calculated from the volumetric cross-correlation of consecutive three-dimensional sets of bubble locations. The bubble size information is estimated from the bubble scattered peak intensity. Both quantities correlate following a power law, as predicted by the Mie scattering theory. The technique is applied to the study of the dynamics of sub-millimeter air bubbles in a three-dimensional vortical flow generated by a propeller. Velocity, bubble size distribution and void fraction are briely discussed. (literal)
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