TURBULENT DIFFUSION OF SMALL PARTICLES.

Abstract

It is the purpose of this project to determine the lateral difficulty of single spherical particles in an isotropic turbulent air flow and the corresponding Lagrangian velocity autocorrelation coefficient. The particles are to vary in size, density, and in time constant, and are to have a stable wake. Five hundred pictures of the 87 microns corn pollen have been obtained, 50 in each of the 10 cameras. The particle positions were measured from the negatives; the results of these measurements are presented. Preliminary experiments were performed to determine design criteria for the particle-size discriminator. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jun 08, 1968
Accession Number
AD0835964

Entities

People

  • John L. Lumley
  • William H. Snyder

Organizations

  • Pennsylvania State University

Tags

DTIC Thesaurus Topics

  • Air Flow
  • Autocorrelation
  • Coefficients
  • Design Criteria
  • Diffusion
  • Discriminators
  • Flow
  • Measurement
  • Particle Size
  • Particles
  • Turbulent Diffusion

Fields of Study

  • Physics

Readers

  • Aerosol Science/Aerosol Physics
  • Fluid Mechanics and Fluid Dynamics.
  • Regression Analysis.