Abo Bibliothek: Guest
Atomization and Sprays

Erscheint 12 Ausgaben pro Jahr

ISSN Druckformat: 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

ENTRAINMENT CONTROL FOR LIGAMENT-CONTROLLED EFFERVESCENT ATOMIZER SPRAYS

Volumen 13, Ausgabe 5&6, 2003, pp. 561-577
DOI: 10.1615/AtomizSpr.v13.i56.70
Get accessGet access

ABSTRAKT

Ligament-controlled effervescent atomization (LCEA) was developed as a means of reducing effervescent atomizer air-to-liquid ratios by mass (ALR) from 2% to as low as 0.75%. This reduction in ALR offers an obvious advantage in numerous applications (e.g., combustion systems because of reduced parasitic losses or paint/coating sprays because of improved penetration into corners). Reduction of ALR is a necessity for consumer product sprays because of the limited quantity of atomizing air available in a prepressurized package.
This study focused on passive control of entrainment by ligament-controlled effervescent atomizer sprays. Spray control was investigated by considering the entrainment-modifying effects of four exitorifice geometries having a common diameter of 0.38 mm but different indeterminate-origins—four-point crown, two-point crown, inclined, and stepped. Each geometry was tested at two liquid mass flow rates (0.5 and 0.6 g/s), four air-to-liquid ratios (0.75 ≤ ALR ≤ 2.0%), and four axial distances (67 ≤ x/d0 ≤ 417). Data were acquired for a single bulk liquid—water. Both the atomizing gas and the entrainment gas were dried, high-pressure air.
Steady entrainment rate and momentum rate data were used to calculate entrainment numbers, E, for sprays produced using each of the entrainment-modifying geometries. Results of this experimental investigation are summarized as follows: (1) Normalized entrainment rates (me/ml) were found to scale linearly with normalized axial distance (x/d0) and to increase with increasing ALR for all exitorifice geometries. (2) Entrainment numbers were found to increase with increasing ALR for all exitorifice geometries. (3) The four-point and two-point crowns were found to enhance entrainment by the sprays, whereas the inclined and stepped exits were found to suppress it.

REFERENZIERT VON
  1. Al Rabadi S., Friedel L., Surma R., Prediction of Droplet Velocities and Rain Out in Horizontal Isothermal Free Jet Flows of Air and Viscous Liquid in Stagnant Ambient Air, Chemical Engineering & Technology, 30, 11, 2007. Crossref

  2. SHU F., PLESNIAK M. W., SOJKA P. E., Indeterminate-origin nozzles to control jet structure and evolution, Journal of Turbulence, 6, 2005. Crossref

  3. Walzel Peter, Spraying and Atomizing of Liquids, in Ullmann's Encyclopedia of Industrial Chemistry, 2010. Crossref

  4. Nourian Amir, Nasr Ghasem, Pillai Daniel, Waters Mark, Compressed gas domestic aerosol valve design using high viscous product, The International Journal of Multiphysics, 8, 4, 2014. Crossref

  5. Asmuin Nor Zelawati, Design for Two-Fluid Fine Nozzle with 50% Fill Ratio, Applied Mechanics and Materials, 773-774, 2015. Crossref

  6. Walzel Peter, Spraying and Atomizing of Liquids, in Ullmann's Encyclopedia of Industrial Chemistry, 2019. Crossref

  7. Nourian Amir, Nasr Ghasem G, Yule Andrew J, Goldberg Tom, Tulloch Greig, Next generation of consumer aerosol valve design using inert gases, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 229, 16, 2015. Crossref

Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen Preise und Aborichtlinien Begell House Kontakt Language English 中文 Русский Português German French Spain