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Atomization and Sprays
Editor-in-Chief Europe: Günter Brenn (open in a new tab)
Editor-in-Chief Americas: Marcus Herrmann (open in a new tab)
Редактор-основатель: Norman Chigier (open in a new tab)

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ISSN Печать: 1044-5110

ISSN Онлайн: 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

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FEMTOSECOND DIGITAL HOLOGRAPHY IN THE NEAR-NOZZLE REGION OF A DODECANE SPRAY

Том 29, Выпуск 3, 2019, pp. 251-267
DOI: 10.1615/AtomizSpr.2019029444
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Краткое описание

A single-shot ultrashort pulse off-axis digital holography system is used to image details of an atomizing dodecane spray produced by a diesel common-rail injection system. This technique takes advantage of multiple scattering noise rejection accomplished by coherence filtering with ultrashort laser pulses (400 nm, 100 fs FWHM) while providing the 3D reconstruction capability unique to digital holography; furthermore, being single shot, it can capture transient early injection events in dynamic high-pressure sprays without any motion blur. The method allows the user to image a large portion of the spray with a single 100 fs pulse, and to then numerically focus on the features of interest. This paper presents results obtained after testing the technique on a diesel common rail fuel injection system to explore the suitability of this technique for imaging the optically dense region of high-pressure atomizing fuel sprays. The spray system includes a common rail fuel supply with a single-orifice Bosch LBZ injector housed in a pressure vessel capable of reaching pressures up to 40 bar and temperatures up to 650 °C. Dodecane or diesel fuel is injected at pressures up to 1700 bar. The results show that the technique is unaffected by thick windows, as well as by pressure and temperature gradients, and can image through optically dense environments where shadowgraph imaging fails. The system achieves an in-plane resolution of 30 μm at a working distance of 30 cm, and can resolve ligaments and droplets that reside in depth planes several centimeters apart within the transient spray field.

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