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Atomization and Sprays

Publication de 12  numéros par an

ISSN Imprimer: 1044-5110

ISSN En ligne: 1936-2684

The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) IF: 1.2 To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years. 2017 Journal Citation Reports (Clarivate Analytics, 2018) 5-Year IF: 1.8 The Immediacy Index is the average number of times an article is cited in the year it is published. The journal Immediacy Index indicates how quickly articles in a journal are cited. Immediacy Index: 0.3 The Eigenfactor score, developed by Jevin West and Carl Bergstrom at the University of Washington, is a rating of the total importance of a scientific journal. Journals are rated according to the number of incoming citations, with citations from highly ranked journals weighted to make a larger contribution to the eigenfactor than those from poorly ranked journals. Eigenfactor: 0.00095 The Journal Citation Indicator (JCI) is a single measurement of the field-normalized citation impact of journals in the Web of Science Core Collection across disciplines. The key words here are that the metric is normalized and cross-disciplinary. JCI: 0.28 SJR: 0.341 SNIP: 0.536 CiteScore™:: 1.9 H-Index: 57

Indexed in

VISCOELASTIC AIR-BLAST SPRAYS IN A CROSS-FLOW. PART 2: DROPLET VELOCITIES

Volume 20, Numéro 8, 2010, pp. 721-735
DOI: 10.1615/AtomizSpr.v20.i8.40
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RÉSUMÉ

To better understand spray coating in field conditions, we have examined the effect of a cross-flow on two different airblast sprays, one comprising water and the other a viscoelastic industrial coating. Using particle image velocimetry, we measured the time-averaged spatial distribution of droplet velocity over a wide range of spray:cross-flow momentum-flux ratios: 134 ≤ qab ≤ 1382. For both sprays, increasing the relative momentum-flux of the cross-flow caused the droplet velocity magnitude to decay more rapidly with streamwise distance. Along the deflecting spray centerline, the decay followed jetlike scaling in the near field but wakelike scaling in the far field. The transverse droplet velocity, meanwhile, showed a local maximum in the main spray body, which was always substantially higher than the cross-flow velocity; normalized values of the local maximum increased with qab, reaching as high as 65%. As for differences between the two sprays, the coating droplets were markedly faster than the water droplets because they had lower drag-momentum ratios and could thus better preserve their initial momentum. For a similar reason, the water droplets were able to more closely track the carrier airflow, approaching the jet/wakelike velocity scaling earlier than did the coating droplets.

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