THE COALESCENCE OF DROPLETS IN A TURBULENT JET

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.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1952
Accession Number
AD0491695

Entities

People

  • Arnold Kivnick

Organizations

  • University of Illinois Urbana–Champaign

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Computing Devices
  • Contracts
  • Difference Equations
  • Differential Analyzers
  • Differential Equations
  • Diffusion Coefficient
  • Digital Computers
  • Engineering
  • Equations
  • Flow
  • Flow Rate
  • Government Procurement
  • Numbers
  • Partial Differential Equations
  • Particle Size
  • Particles

Fields of Study

  • Chemistry

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Internal Combustion Engine (ICE) Technology.
  • Materials Science (Mechanical Engineering).