Accession Number : AD0491695

Title :   THE COALESCENCE OF DROPLETS IN A TURBULENT JET.

Descriptive Note : Technical rept.,

Corporate Author : ILLINOIS UNIV AT URBANA ENGINEERING EXPERIMENT STATION

Personal Author(s) : Kivnick, Arnold

Report Date : 01 AUG 1952

Pagination or Media Count : 28

Abstract : An equation for the coalescence of particles under the influence of velocity gradients has been applied to the problem of coalescence of spray droplets in the turbulent fields surrounding two-fluid atomizers. Two derivations have been made, one which permits the estimation of the probable upper limit of coalescence, and a second which takes into account the effects of dilution of the spray in the jet which reduces the coalescence. The first consideration results in a relationship which may be evaluated easily; the second gives rise to a partial differential equation which is not susceptible to analytical solution. A solution by iteration of the corresponding finite difference equation is discussed in the Appendix. (Author)

Descriptors :   (*COLLOIDS), (*JET MIXING FLOW), SPRAYS, DROPS, PARTICLE SIZE, TURBULENCE, ADHESION, WATER, AEROSOLS, NOZZLES, VELOCITY, MATHEMATICAL ANALYSIS, PARTIAL DIFFERENTIAL EQUATIONS, ITERATIONS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE