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Atomization and Sprays
Импакт фактор: 1.737 5-летний Импакт фактор: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN Печать: 1044-5110
ISSN Онлайн: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v10.i1.40
21 pages

AIR FLOW AND DROPLET MOTIONS PRODUCED BY THE INTERACTION OF FLAT-FAN SPRAYS AND CROSS FLOWS

J. C. Phillips
Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Silver Street, Cambridge, UK
P. C. H. Miller
Silsoe Research Institute, Wrest Park, Silsoe, Bedfordshire, United Kingdom
N. H. Thomas
FAST Team, School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, United Kingdom

Краткое описание

The interaction between the vertical flow induced by downward-pointed sprays and a horizontal cross flow was studied using a boom of overlapping flat-fan sprays in a wind tunnel. Flow patterns were visualized, and droplet fluxes, velocities, and sizes were measured 2 m downwind of the boom using line collectors and a phase-Doppler analyzer, under weak and moderate cross flows, in which the ratio of the cross-flow velocity to the maximum air entrainment velocity into the spray was respectively less and greater than unity. For weak cross flows, the spray was penetrated only in regions of low entrained air velocity, with downstream droplet fluxes and air velocity maxima corresponding to the spray edges. For moderate cross flows, the spray was penetrated everywhere across its width. Downstream flux measurements corresponded to the spray centerline, which is the origin of the highest flax of fine droplets that are "scavenged" by the mean cross flow. Drifting droplets had diameters less than 100 μm and were transported passively by the cross flow.


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