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

PDF Url : AD0491695

Report Date : 01 Aug 1952

Pagination or Media Count : 34

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.

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

Subject Categories : Physical Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE