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Atomization and Sprays

Publicou 12 edições por ano

ISSN Imprimir: 1044-5110

ISSN On-line: 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

CHARACTERISTICS OF INTERIMPINGEMENT DIESEL SPRAY

Volume 12, Edição 4, 2002, pp. 431-449
DOI: 10.1615/AtomizSpr.v12.i4.50
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RESUMO

A mutual impingement of spray in a diesel engine was tried to assess the probability of further atomization of conventional diesel spray. The effects of impingement distance and impingement angle on the characteristics of the impingement spray were investigated by comparing with a nonimpingement free spray. In this study, the experiment was conducted for two typical impingement patterns, the jet-to-jet impingement of liquid columns in the vicinity of the nozzles and the spray-to-spray impingement of fully developed sprays away from the nozzles. The spray tip penetration was reduced rapidly after the impingement in both cases of jet-to-jet and spray-to-spray impingements with impingement angle of 90°. On the other hand, in the case of spray-to-spray impingement with 60° impingement, the penetrations were longer than that of free spray at just after the impingement. Spray tip velocity was calculated by differentiating the spray tip penetration curve. In the case of 90' impingement, the spray tip velocity was reduced rapidly by the impingement. However, in the case of spray-to-spray impingement with 60' impingement, the impinged spray had a tendency to increase instantaneously just after the impingement. This means that the spray may be accelerated by the mutual impingement. Atomization behavior was observed using a high-speed camera and it was found that the mutual impingement of diesel sprays caused the swelling of the sprays after the impingement. So, a simple model for estimation of impinging spray volume was proposed. The spray volume was about 1.5 times larger than that of free spray when the impingement distance was near the breakup point of the free spray. Also, the Sauter mean diameter (SMD) of the impingement spray was compared with that of nonimpingement free spray. The result showed that the SMD was slightly smaller compared with that of the free spray in the case of spray-to-spray impingement.

CITADO POR
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