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Atomization and Sprays

Publicado 12 números por año

ISSN Imprimir: 1044-5110

ISSN En Línea: 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

ELECTROHYDRODYNAMICS OF CHARGE INJECTION ATOMIZATION: REGIMES AND FUNDAMENTAL LIMITS

Volumen 13, Edición 2&3, 2003, 18 pages
DOI: 10.1615/AtomizSpr.v13.i23.20
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SINOPSIS

The dynamics and controlling mechanisms of a charge injection electrostatic atomization method for insulating liquids have been investigated using a sharp electrode as a current source, which is placed inside the atomizer and held at a high electrical potential. The method is applicable to highly insulating liquids such as hydrocarbon oils and oil-based solutions, and potential uses of this technology include combustion systems and high-quality spray coating/deposition applications. Subcritical and supercritical flow regimes of atomizer operation are delineated by different types of electrical breakdown. The subcritical flow regime is limited by an insulation failure of the liquid hydrocarbon itself and occurs inside the atomizer. This regime, although of interest to understand the fundamental nature of the electrohydromechanics, does not produce finely atomized sprays. Atomization performance in the supercritical flow regime is characterized by the maximum spray specific charge being limited by a partial discharge in the gas outside the nozzle, around the liquid jet as it emerges from the nozzle. In this case, finely atomized sprays are possible, and with no electrical limitation on the upper flow rate limit. The maximum spray specific charge achievable in the supercritical regime has been found to increase at larger nozzle exit velocities and also for smaller orifice diameters. These two factors, combined with the increased aerodynamic shear acting on the charged liquid jet as it emerges from the orifice at higher velocities, enhances the destabilization of the charged liquid jet to produce finely atomized and well-dispersed sprays of insulating liquids.

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