Accession Number : AD0742257

Title :   Line-of-Sight Integration of Density Distribution for Discrete Chemical Releases Diffusing in a Constant Shear Flow.

Descriptive Note : Environmental research papers,

Corporate Author : AIR FORCE CAMBRIDGE RESEARCH LABS L G HANSCOM FIELD MASS

Personal Author(s) : Quesada,Antonio F. ; MacLeod,Malcolm A.

Report Date : 10 NOV 1971

Pagination or Media Count : 30

Abstract : The analytic expression for the number density of an initially spherical gaussian puff diffusing in a constant shear flow is integrated along an arbitrary line of sight. It is shown that the sum of the projected gaussian half-widths squared is a cubic function of the time, with coefficients that depend on the geometry, the initial puff radius, the wind shear components, and the ambient diffusion coefficient. This result establishes the basis for determining these parameters from experimental data by least-squares techniques. (Author)

Descriptors :   (*UPPER ATMOSPHERE, DIFFUSION), (*ATMOSPHERIC SOUNDING, GAS FLOW), TRANSPORT PROPERTIES, WIND, DISTRIBUTION FUNCTIONS

Subject Categories : Atmospheric Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE