The Size of Drops falling from a Vertical Plate

Abstract

In order to determine the total surface area of many drops falling from a lower horizontal edge of a vertical wood plate, the sizes of drops were measured on the photographs which were taken with 10^-4 sec lighting.
Experimental results showed that mean diameter of the drops d_m (or d_mv) was independent of the plate thickness (D)and liquid flow rate(L_d or L_d''). From the results obtained by dimensional anaplate thickness (D)and liquid flow rate(L_d or L). From the results obtained by dimensional analysis, the following equations were derived:
[cm] (7)
[-] (16)
where, cm, gr, sec units are used.
The ratio (Z_e) of thc total surface area of all drops existing in the space (1) under a vertical plate to the surface area of a plate of the same height (1) proved to be as follows:
[%] (29)
or, neglecting the effect of viscosity (μ),
[%] (33)
where, units are L>_d[l/m hr], l[m], and τ, ρ, μ, and g with [cm, gr, sec units].