OLS : Record


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
Subjects Air pollution; Aerosols; Mathematical models; Urban areas; Transport properties; Coagulation; Evaporation; Condensation; Dynamics; Atmospheric dispersion
Library   Call Number Additional Info Location Date Modified
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.
PUB Date Free Form Aug 84
Category Codes 13B; 68A; 91A
NTIS Prices PC A03/MF A01
Primary Description 600/09
Document Type NT
Control Number 432821226
Cataloging Source NTIS/MT
Origin NTIS
Type CAT