Record Display for the EPA National Library Catalog

RECORD NUMBER: 29 OF 33

OLS Field Name OLS Field Data
Main Title Urban Aerosol Modeling.
Author Brock, J. R. ;
CORP Author Texas Univ. at Austin. Coll. of Engineering.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1984
Report Number EPA-R-808601; EPA/600/3-84/088;
Stock Number PB84-233469
Additional Subjects Air pollution ; Aerosols ; Mathematical models ; Urban areas ; Transport properties ; Coagulation ; Evaporation ; Condensation ; Dynamics ; Atmospheric dispersion
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB84-233469 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 42p
Abstract
Accurate numerical schemes have been developed for simulation of the condensation/evaporation processes with vapor conservation for a single component aerosol. These have been incorporated in modules which allow simulation of aerosol dynamics in models for dispersion and transport. The coagulation process can be simulated by these methods with high accuracy. In coagulation simulation errors can be reduced to any desired level by choices of width and size interval. It has been shown that the method of fractional steps give excellent results with large savings in computer time. The condensation/evaporation process with vapor conservation has been simulated numerically through the use of a new Eulerian-Lagrangian numerical technique. With this technique numerical dispersion and diffusion can be reduced to any desired level.