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Atomization and Sprays

Published 12 issues per year

ISSN Print: 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

SPRAY EVOLUTION IN A TWIN-FLUID SWIRL ATOMIZER

Volume 18, Issue 5, 2008, pp. 449-470
DOI: 10.1615/AtomizSpr.v18.i5.30
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ABSTRACT

This paper describes an experimental study of the evolution of spray structure in an internally mixed, twin-fluid swirl atomizer. The atomization in such atomizers is perceived to be strongly influenced by the mass flow ratio of the atomizing gas and the liquid. The order of magnitude of the ALR (air-liquid mass flow ratio), for which the study was made, ranged from 0.001 to 0.1. A laser sheet visualization technique was used to study the primary spray formation process. It was observed that at low ALR a fully developed air core inside the hollow conical spray is present, suggesting the assistance provided by the atomizing air to the atomization process by destabilizing the liquid internally. At high ALR conditions of around 0.1, a solid-cone spray shape is observed. At moderate ALRs, a mixed cone is formed, having an outer hollow structure and a solid core, with a gap between the inner and outer cone. This can be attributed to the combined effect of swirl that produces the hollow cone and the increase in the axial momentum of the liquid inside the atomizer due to squeezing by the surrounding atomizing air, which forms the inner core. Also, the phenomenon of liquid disintegration in terms of breaking length and the droplet diameter for different ALR conditions were analyzed in this study. It was observed that the structure of the spray, e.g., cone angle, solidity, and breaking length, do not change much with the increase in ALR beyond a critical value of 0.08. The variation from hollow to solid cones demonstrated by the atomizer in this study makes it flexible enough to be used for various commercial applications, since the atomizer is capable of providing a wide range of spray patterns depending on the application requirement.

CITED BY
  1. Kushari A., Effect of injector geometry on the performance of an internally mixed liquid atomizer, Fuel Processing Technology, 91, 11, 2010. Crossref

  2. Kushari Abhijit, A Heuristic Model of Twin Fluid Internally Mixed Atomization using Distributed Weber Number Criterion, Particle & Particle Systems Characterization, 27, 1-2, 2010. Crossref

  3. Li Zhouhang, Wu Yuxin, Cai Chunrong, Zhang Hai, Gong Yingli, Takeno Keiji, Hashiguchi Kazuaki, Lu Junfu, Mixing and atomization characteristics in an internal-mixing twin-fluid atomizer, Fuel, 97, 2012. Crossref

  4. Yadav Nagendra P., Kushari Abhijit, Spray Formation in a Twin-Fluid Internally Mixed Atomizer with Tangential Air Intake, Particle & Particle Systems Characterization, 28, 1-2, 2011. Crossref

  5. Lal Suresh, Kushari A., Gupta M., Kapoor J.C., Maji S., Experimental study of an air assisted mist generator, Experimental Thermal and Fluid Science, 34, 8, 2010. Crossref

  6. Li Zhouhang, Wu Yuxin, Yang Hairui, Cai Chunrong, Zhang Hai, Hashiguchi Kazuaki, Takeno Keiji, Lu Junfu, Effect of liquid viscosity on atomization in an internal-mixing twin-fluid atomizer, Fuel, 103, 2013. Crossref

  7. Sikka Raghav, Vågsæther Knut, Bjerketvedt Dag, Lundberg Joachim, Experimental Study of Primary Atomization Characteristics of Sonic Air-Assist Atomizers, Applied Sciences, 11, 21, 2021. Crossref

  8. Sikka Raghav , Vågsæther Knut , Bjerketvedt Dag , Lundberg Joachim , ATOMIZATION CHARACTERISTICS OF AN ANNULAR SHEET WITH INNER AIR IN A SONIC TWIN-FLUID ATOMIZER , Atomization and Sprays, 33, 1, 2023. Crossref

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