Study of atmospheric dispersion of pollutant plumes from elevated stacks assuming a finite limit to the rate of vertical dispersion

In this paper, we investigate the atmospheric application of Monin's equations for the probability density functions (pdf) for the vertical position of particles diffusing in a turbulent flow with a finite diffusion speed as opposed to the infinite speed inherent in the parabolic diffusion equa...

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Bibliographic Details
Published inAtmospheric environment (1994) Vol. 42; no. 19; pp. 4601 - 4610
Main Authors Misra, P.K., Chtcherbakov, A.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.06.2008
Elsevier Science
Subjects
Applied sciences
Atmospheric pollution
Convective boundary layer
Exact sciences and technology
Maximum ground level concentration
Plume dispersion
Pollutants physicochemistry study: properties, effects, reactions, transport and distribution
Pollution
Probability density functions
Tall stacks
Plume dispersion
Convective boundary layer
Maximum ground level concentration
Probability density functions
Tall stacks
Turbulent flow
Pollutant behavior
Plume
Atmospheric boundary layer
Pollution source
Probability density function
Air pollution
Convective layer
Atmospheric dispersion
Analytical solution
Concentration distribution
Point source
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Summary:In this paper, we investigate the atmospheric application of Monin's equations for the probability density functions (pdf) for the vertical position of particles diffusing in a turbulent flow with a finite diffusion speed as opposed to the infinite speed inherent in the parabolic diffusion equation and the Gaussian distributions of plumes. Monin's equations are modified for the case of particle dispersion in a convective boundary layer where the vertical distribution is asymmetrical. We also provide an analytical solution of the pdf of vertical dispersion applicable to this case of asymmetrical vertical distribution by making some suitable assumptions on the nature of turbulence. Vertical concentration profiles for particles emitted from stacks of various heights inside a convective boundary layer are compared with laboratory measurements. The agreement between predicted and observed concentration profiles is shown to be good.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1352-2310
1873-2844
DOI:10.1016/j.atmosenv.2008.01.055