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Atomization and Sprays
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ISSN Druckformat: 1044-5110
ISSN Online: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v16.i7.30
pages 749-762

FURTHER DEVELOPMENTS OF A NOVEL SELF-DRIVEN SPRAY NOZZLE

Edward H. Owens
Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, United Kingdom
Weiping Liu
Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, United Kingdom
George H. Smith
Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, United Kingdom
Mark T. Leonard
Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, United Kingdom

ABSTRAKT

An experimental study of a further development of a novel atomizing nozzle is presented. The novelty of the nozzle lies in the incorporation of a self-driven, hydraulic turbine, which provides improved atomization performance. The inclusion of this rotating component promotes smaller particle sizes within the plume for a given pressure and flow rate. A new version of the nozzle is described in terms of both design and performance. Previous versions of the nozzle produced spray plumes by a variety of atomization processes. This new version incorporates a series of enclosed spray channels that provide a spinning disk-type atomization effect. The effect on the spray plume is to produce a Sauter mean diameter that varies with fluid feed pressure and a plume spray density that is similar to a solid cone-type plume. The Sauter mean diameter was found to vary within the range of 80−190 μm. The observed droplet size distributions suggest that the nozzle produces a spray similar to that produced by spinning disk atomizers in the outer region of the spray plume. The volumetric concentration in the inner spray is reduced to 40% of that in the outer plume, and the droplets present in this region are smaller than in the outer plume.


Articles with similar content:

DROPLET CHARACTERIZATION OF A NOVEL ORIFICE SPRAY NOZZLE
Atomization and Sprays, Vol.15, 2005, issue 5
Weiping Liu, George H. Smith, Edward H. Owens, Mark T. Leonard
EXPERIMENTAL STUDY ON FLOW FIELDS OF FUEL DROPLETS AND AMBIENT GAS OF DIESEL SPRAY-FREE SPRAY AND FLAT-WALL IMPINGING SPRAY
Atomization and Sprays, Vol.24, 2014, issue 7
Takumi Uemura, Keiya Nishida, Jingyu Zhu
CHARACTERISTICS OF SPRAYS THROUGH A WALL IMPINGEMENT INJECTOR
Atomization and Sprays, Vol.14, 2004, issue 4
Takao Inamura, Terutoshi Tomoda
INFLUENCE OF OPERATING VARIABLES ON AVERAGE DROPLET SIZE DURING LINEAR ATOMIZATION
Atomization and Sprays, Vol.7, 1997, issue 4
Robert L. Kozarek, Scott Samuelsen, Yizhang Zhou, Enrique J. Lavernia, Steven Lee, Vincent McDonell
SPRAY EVOLUTION IN A TWIN-FLUID SWIRL ATOMIZER
Atomization and Sprays, Vol.18, 2008, issue 5
J. Karnawat, Abhijit Kushari