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雾化与喷雾
影响因子: 1.262 5年影响因子: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN 打印: 1044-5110
ISSN 在线: 1936-2684

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雾化与喷雾

DOI: 10.1615/AtomizSpr.v4.i3.70
pages 351-367

DISCHARGE COEFFICIENT AND SPRAY ANGLE MEASUREMENTS FOR SMALL PRESSURE-SWIRL NOZZLES

Javier Ballester
University of Zaragoza, Fluid Mechanics Group/LITEC
Cesar Dopazo
CIEMAT, Av. Complutense 22 Madrid, 28040 Spain

ABSTRACT

An experimental study of the influence of atomizer dimensions and injection conditions on discharge coefficient and spray angle is presented. Simplex pressure-swirl nozzles atomizing heavy oil have been examined. Twenty nozzles of different geometries have been investigated, including orifice diameters down to 0.45 mm. Inviscid theory results or published correlations valid for larger atomizers do not seem to apply for those of smaller dimensions, for which viscous effects are thought to play a major role. This role is analyzed, and new correlations are proposed for discharge coefficient and spray cone angle.


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