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雾化与喷雾
Günter Brenn (open in a new tab) Institute of Fluid Mechanics and Heat Transfer, Graz University of Technology, 8010 Graz, Austria
David L. S. Hung (open in a new tab) University of Michigan-Shanghai Jiao Tong University Joint Institute, Shanghai Jiao Tong University, 800 Dongchuan Rd., Shanghai, 200240, China
Marcus Herrmann (open in a new tab) School for Engineering of Matter, Transport and Energy, Arizona State University, P.O. Box 876106, Tempe, AZ 85287-6106, USA
Norman Chigier (open in a new tab) Department of Mechanical Engineering, Carnegie-Mellon University, Pittsburgh, PA 15213-3890, USA
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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DISCHARGE COEFFICIENTS FOR PLAIN-ORIFICE EFFERVESCENT ATOMIZERS

pages 275-290
DOI: 10.1615/AtomizSpr.v4.i3.30
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摘要

Discharge coefficients for plain-orifice effervescent atomizers are measured over wide ranges of air/liquid ratio, ambient air pressure, air injection pressure, and liquid properties. Three different discharge orifice diameters of 1.2, 1.6, and 2.0 mm are employed in conjunction with a constant mixing chamber diameter of 6.4 mm. The results obtained show that discharge coefficients are governed primarily by air/liquid mass ratio and air/liquid density ratio, with liquid properties playing only a minor role. It is also found that continuous increase in air/liquid mass ratio leads eventually to flow instabilities and a pulsating spray. The range of air/liquid ratios over which the spray remains stable can be extended by increases in flow velocity and/or air/liquid density ratio. An equation for estimating the maximum air/liquid mass ratio at which stable atomizer operation can be sustained is derived.

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