Record Display for the EPA National Library Catalog


Main Title Trajectories of Plumes and Jets in Turbulent Shear Flow under Near-Neutral Conditions.
Author Genikhovich, E. L. ; Snyder, W. H. ;
CORP Author National Oceanic and Atmospheric Administration, Research Triangle Park, NC. Atmospheric Sciences Modeling Div.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher Dec 94
Year Published 1994
Report Number EPA/600/A-95/025;
Stock Number PB95-174678
Additional Subjects Plumes ; Shear flow ; Trajectories ; Turbulent jets ; Atmospheric models ; Air pollution ; Dispersions ; Fluid flow ; Dispersing ; Mathematical models ; Stratified flow ; Buoyancy ; Wind tunnel tests ; Environment models ; Environment simulation ;
Library Call Number Additional Info Location Last
NTIS  PB95-174678 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 9p
new method of determination of trajectories of plumes and jets using measured vertical profiles of tracer concentration is proposed. Model calculations show that this method can reduce significantly the scatter in the data and eliminate the appearance of an artificial final rise of the plumes and jets. This method is used to determine plume rise from experimental data which were obtained in the EPA Meterological Wind Tunnel (MWT). The results of the measurements were nondimensionalized using buoyancy and momentum length scales. The results obtained are compared with data from other laboratory and field measurements. It is shown that plume rise near the source can be represented using the 'one-third' and 'two-third' laws. Farther from the sources, the data are in agreement with the results of measurements in the MWT. Approximate formulae are suggested in order to incorporate these results into mathematical models of pollutant dispersion.