
Accession Number : AD0742257
Title : LineofSight 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 halfwidths 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 leastsquares 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