Accession Number:

AD0702332

Title:

DISPERSION PATTERNS OF AEROSOL PARTICLES IN A FREE ATMOSPHERE

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s):

Report Date:

1969-11-07

Pagination or Media Count:

51.0

Abstract:

A comprehensive description and analysis are presented of experimental studies of the dispersal and fallout of solid particles luminescent sand particles, 100-1000 Mu in diameter, and luminescent plastic particles, 30-100 Mu in diameter dispersed at heights of 500 -8000 m in the free atmosphere and falling out at a rate of from 0.1 to 3 msec. The traces of the aerosol particle fallout were measured to determine the relationships between their principal characteristics surface concentrations, positions of zones of maximum particle concentration, amount of surface concentration dispersion and total amount of particles ejected, the wind speed, and rate of particle fallout. The information presented includes description of experimental procedures preparation of luminescent particles and location, description, period of operation and sizes of test sites methods of aerological observation pibal, aircraft and identification and grouping of four types of atmospheric stratification. The field results are graphed, tabulated, and summarized in detail. Empirical relationships investigated related to analysis of the practical utilization of the equation for turbulent diffusion and the coefficient of turbulent mixing in the derivation of a simple empirical equation.

Subject Categories:

  • Air Pollution and Control

Distribution Statement:

APPROVED FOR PUBLIC RELEASE