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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

REAL-TIME EVOLUTION OF NOZZLE INTERNAL FLOW AND SPRAY BREAKUP UNDER HIGH FUEL TEMPERATURE AND HIGH AMBIENT PRESSURE

Volume 31, Edição 12, 2021, pp. 1-19
DOI: 10.1615/AtomizSpr.2021036334
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RESUMO

Injector nozzle internal flow and the following spray atomization considerably affect combustion characteristics and emissions from diesel engines. This study focuses on the instantaneous cavitation evolution inside the diesel injector nozzle. The aim is to study how the nozzle internal flow influences the real-time near-filed diesel spray evolution and its atomization characteristics. A high-speed camera coupled with a microscope was employed to capture the instantaneous cavitation evolution inside an optical quartz nozzle under high fuel temperature and high ambient pressure conditions. The area-based cavitation fraction was used to quantify the cavitation intensity in the nozzle. Results show that increasing fuel temperature leads to less residual fuel left in the nozzle at the end injection due to a reduction of fuel viscosity; consequently, gas bubbles increase at the next injection event. Compared with the saturated vapor pressure changing with the temperature, the size of the initial bubbles has a greater influence on the development of subsequent cavitation strength. The influence of back pressure on the cavitation strength is weaker than that of temperature. The relationship between the instantaneous cavitation intensity and the spray cone angle is linear.

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