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Atomization and Sprays

Erscheint 12 Ausgaben pro Jahr

ISSN Druckformat: 1044-5110

ISSN Online: 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

INTERNAL AND NEAR-NOZZLE FLOW OF A PRESSURE-SWIRL ATOMIZER UNDER VARIED FUEL TEMPERATURE

Volumen 17, Ausgabe 6, 2007, pp. 529-550
DOI: 10.1615/AtomizSpr.v17.i6.30
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ABSTRAKT

Gasoline fuel spray from a swirl injector collapses at high fuel temperatures due to the flash boiling effect. In order to clarify the influence of fuel temperature on the spray structure, a variety of internal and near-nozzle flows were examined at different fuel temperatures. The initial development of fuel flows was analyzed by imaging the spray behavior with high-magnification optics and by static pressure measurements of the spray field with a piezoresistive transducer. The experimental results are discussed with a mathematical liquid film model. Fuel evaporation at high fuel temperatures causes static gas pressure to increase inside and near the nozzle. The reduced viscosity of fuel at high temperature causes enhanced swirl motion of the spray. These lead to reduced liquid film thickness inside the nozzle, in addition to increased flow divergence at the nozzle exit. At locations further downstream, the spray is driven toward the spray axis at high fuel temperatures as a result of the augmented pressure drop inside the spray and entrained air. The shorter breakup time at high fuel temperatures makes the spray lose its initial momentum and be easily affected by the pressure difference between the inner and outer parts of the spray and entrained air.

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