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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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ASYMPTOTIC ANALYSIS OF DROPLET COALESCENCE EFFECTS ON SPRAY DIFFUSION FLAMES IN A UNIDIRECTIONAL SHEAR LAYER FLOW

Том 5, Выпуск 4&5, 1995, pp. 357-386
DOI: 10.1615/AtomizSpr.v5.i45.10
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Краткое описание

An asymptotic analysis is utilized in the solution procedure of the spray governing equations in order to examine droplet coalescence effects on spray diffusion flames in a unidirectional shear layer flow. The spray diffusion flame results from an evaporating multisize (polydisperse) spray of fuel droplets suspended in one of the streams of the unidirectional shear layer flow. The droplets and their vapor spread into a co-flowing stream in which the oxidizer is contained and feed the flame. Simultaneous concurrent processes of evaporation and coalescence of fuel droplets are considered. A small parameter defined in terms of a characteristic coalescence rate is identified in the governing equations and then employed in the asymptotic solutions. Various values of this parameter are analyzed. The lateral location of the flame and its temperature are obtained here via the solution of Schvab-Zeldovich-type equations. New results are presented here for the effects of droplet coalescence on the evolution in drop size histograms, on droplet Sauter mean diameter (SMD), on vapor production across the shear layer, and on flame geometry and its temperature. The present results indicate that for relatively high coalescence rates, the lateral distributions of the droplet SMD across the shear layer assumes an S-shaped curve. It is also shown that sprays that are initially comprised of small droplets produce larger amounts of vapor and thus result in a flame that is shifted toward the oxidizer stream. On the other hand, larger droplets are formed at the expense of small droplets via coalescence. Thus, due to droplet coalescence, the resulting flame is shifted toward the fuel spray stream. The higher the coalescence rate, the smaller is the vapor production rate and the more pronounced is the shift of the flame toward the fuel spray stream. Various initial drop size histograms are considered here. The results of the present study indicate that flame location and its temperature are functions not only of the total flow rate of liquid fuel but also of the initial drop size histogram of the spray and may be affected by droplet coalescence.

ЦИТИРОВАНО В
  1. KHOSID S., TAMBOUR Y., Analytic study of developing flows in a tube laden with non-evaporating and evaporating drops via a modified linearization of the two-phase momentum equations, Journal of Fluid Mechanics, 603, 2008. Crossref

  2. Katoshevski David, Greenberg J Barry, A New Solution for an Evaporating Spray in a Shear Layer, 4th AIAA Theoretical Fluid Mechanics Meeting, 2005. Crossref

  3. Rosner Daniel E., Spray Combustor Design/Performance: Chemical Engineering Contributions and the Emergence of an “Interacting Population-Balance” Perspective, Industrial & Engineering Chemistry Research, 48, 14, 2009. Crossref

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