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Atomization and Sprays

Publication de 12  numéros par an

ISSN Imprimer: 1044-5110

ISSN En ligne: 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

LARGE EDDY SIMULATION OF HIGH GAS DENSITY EFFECTS IN FUEL SPRAYS

Volume 23, Numéro 4, 2013, pp. 297-325
DOI: 10.1615/AtomizSpr.2013006784
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RÉSUMÉ

The paper focuses on the physics of sprays using large eddy simulation (LES) and Lagrangian particle tracking (LPT). The LES/LPT was compared to previously unpublished experimental fuel spray data in two ambient gas densities, 39 and 115 kg/m3. The higher density case corresponds to a near-future engine environment with maximum cylinder pressure of the order of 300 bar, whereas the lower density case resembles typical present-day engine conditions. The accuracy of the results was quantified by calculating the resolved part of the turbulent kinetic energy and using a LES quality index analysis. The sprays produced by the LES/LPT had many similarities with the experimental sprays. On a global scale, spray penetration, spray opening angle, and spray dispersion were found to be well captured by the LES/LPT. The results indicated that the effect of subgrid scales on particle dispersion was small and hence no explicit particle dispersion model was required. Similarities were also found locally as LES/LPT produced small-scale flow structures indicated by the Q-criterion, preferential concentrations, and voids free of droplets. Finally, we propose a new gas phase mixing indicator in order to quantify turbulent mixing. Results from the novel mixing indicator suggest that for a given spray penetration, the higher ambient gas density spray yields an increased mixing rate.

CITÉ PAR
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