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Atomization and Sprays

年間 12 号発行

ISSN 印刷: 1044-5110

ISSN オンライン: 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

STRUCTURE OF A NONEVAPORATING SWIRL INJECTOR SPRAY

巻 7, 発行 1, 1997, pp. 77-95
DOI: 10.1615/AtomizSpr.v7.i1.40
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要約

The structure of a dense-liquid, swirl-injector, hollow-cone spray operating in atmospheric pressure conditions has been investigated using strobe photography, phase Doppler particle anemometry, (PDPA), and mechanical liquid collection methods. Image-processed strobe photographs and measurements of drop velocity, drop size, and liquid mass flux in the dense spray of a pressure-swirl, hollow-cone liquid oxygen (LOX) simulant injector are reported, as well as analysis resulting from these measurements. Since combusting liquid sprays depend on the liquid dispersion rates and the size and distribution of the drops, the liquid mass distribution is important in evaluating the performance of a liquid rocket engine spray. The objective of this study was to determine the drop velocity, the drop size and distribution, the liquid mass distribution within the spray, and a possible relationship to the internal flow of the injector. The results demonstrate that accurate mass flux measurements can be made with the PDPA but only within the discrete droplet regions of the dense spray, which for the present conditions occurs between 20 and 30 injector exit diameters from the injector exit. The measured mean drop size is approximately 330 μm in the dense portion of the spray, which is considerably less than the predicted analytic mean diameter of 1150 μm. The breakup mechanism used to derive the analytic mean drop size expression is qualitatively correct, but it overpredicts the mean drop size because the method does not account correctly for injection-induced turbulence within the liquid sheet and wind-induced secondary breakup, which are important in high-velocity liquid atomization. The results reaffirm that the conical liquid sheet thickness is an important parameter in drop size determination.

によって引用された
  1. Santolaya J. L., Aísa L. A., Calvo E., García I., Cerecedo L. M., Experimental Study of Near-Field Flow Structure in Hollow Cone Pressure Swirl Sprays, Journal of Propulsion and Power, 23, 2, 2007. Crossref

  2. Marchione T., Allouis C., Amoresano A., Beretta F., Experimental Investigation of a Pressure Swirl Atomizer Spray, Journal of Propulsion and Power, 23, 5, 2007. Crossref

  3. Yao Shanshan, Zhang Ji, Fang Tiegang, Effect of viscosities on structure and instability of sprays from a swirl atomizer, Experimental Thermal and Fluid Science, 39, 2012. Crossref

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  6. Santolaya J.L., Aísa L.A., Calvo E., García I., García J.A., Analysis by droplet size classes of the liquid flow structure in a pressure swirl hollow cone spray, Chemical Engineering and Processing: Process Intensification, 49, 1, 2010. Crossref

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  8. Inamura Takao, Miyata Kei, Tamura Hiroshi, Sakamoto Hiroshi, Spray characteristics of swirl coaxial injector and its modeling, 37th Joint Propulsion Conference and Exhibit, 2001. Crossref

  9. Feikema Douglas, Liquid film characteristics inside a pressure-swirl atomizer, 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998. Crossref

  10. Ibrahim E A, McKinney T R, Injection characteristics of non-swirling and swirling annular liquid sheets, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 220, 2, 2006. Crossref

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