THE COAGULATION OF CHARGED CLOUD-DROPLETS

Abstract

According to present theory of the formation of precipitations, the growth of cloud-droplets in the range of diameters d = 4 greater than 30 microns takes place only by way of condensation of water vapor. The basis of this conclusion is that since there exists a critical value k sub cr = 1.214 for the parameter of gravitational coagulation, then coagulation of (two) neutral droplets is possible only when the diameter of the larger drop exceeds 30 microns. But it seems to us that growth of cloud-droplets in the range d = 4 greater than 30 microns may take place through coagulation of electrically charged droplets. To confirm this hypothesis, let us calculate E, the coefficient of capture, for electrically charged droplets.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1958
Accession Number
AD0682867

Entities

People

  • L. M. Levin

Organizations

  • United States Army Biological Warfare Laboratories

Tags

DTIC Thesaurus Topics

  • Celestial Brightness
  • Coefficients
  • Condensation
  • Coordinate Systems
  • Diameters
  • Dielectric Permittivity
  • Drops
  • Electric Charge
  • Equations
  • Physical Sciences
  • Precipitation
  • Stratified Fluids
  • Trajectories
  • Water Vapor

Readers

  • Aerosol Science/Aerosol Physics
  • Fluid Dynamics.