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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

ULTRASOUND-MODULATED TWO-FLUID ATOMIZATION OF VISCOUS NEWTONIAN LIQUIDS

Volume 13, Numéro 4, 2003, pp. 395-412
DOI: 10.1615/AtomizSpr.v13.i4.40
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RÉSUMÉ

In this article, ultrasound-modulated two-fluid (UMTF) atomization of viscous Newtonian liquids at a lower ultrasonic frequency (25 kHz) is compared to that at fundamental frequencies of 54 and 110 kHz. The experimental data obtained show a shift to smaller drop sizes at a higher air velocity and a larger ratio of air-to-liquid mass flow rate, consistent with those obtained previously at the higher fundamental frequencies. Also consistent with earlier findings, the drop-size distribution becomes narrower as liquid viscosity increases. The experimental results of drop-size distribution are consistent with the theoretical predictions of greater-amplitude growth rates for the capillary waves generated by higher (third and above) harmonics than by the first and second harmonics based on the modified Taylor’s dispersion relation. However, since the harmonics differ in frequency by 25 kHz only, more than one higher harmonic (up to fifth) make significant contributions in UMTF atomization. Compared to the acoustic-modulated pressure atomization that also operates at 25 kHz, the UMTF atomization requires an ultrasonic drive two orders of magnitude smaller.

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