Ge. Mccreery et Cm. Stoots, DROP FORMATION MECHANISMS AND SIZE DISTRIBUTIONS FOR SPRAY PLATE NOZZLES, International journal of multiphase flow, 22(3), 1996, pp. 431-452
This article describes the results of an experimental investigation of
drop formation mechanisms and drop diameter distributions for spray p
late nozzles. Spray plate nozzles are comprised of a distribution nozz
le which projects a high velocity jet Of water concentric on a plate.
The resultant water film flows radially outward on the plate and break
s into drops after the liquid detaches from the plate and flows outwar
d as a sheet. The drop size distribution is determined by a balance be
tween shear forces with air and how instabilities and turbulence in th
e liquid sheet flow, which tend to fracture the liquid sheet and drops
, and surface tension forces, which tend to hold the liquid sheet and
drops together. Experimental results include short duration photograph
s of nozzle jet flow, liquid film flow, and of water drop formation. D
rop diameter distributions were obtained with a phase Doppler particle
analyzer (PDPA). The variations of drop mean diameter, volumetric mea
n and Sauter mean diameters as functions of pressure, distribution noz
zle-to-plate distance, and plate diameter are quantified. Copyright (C
) 1996 Elsevier Science Ltd.