OLS : Record

RECORD NUMBER: 12 OF 3440

Main Title

A coupled two-dimensional diffusion and chemistry model for turbulent and inhomogeneously mixed reaction systems /

Author

Hilst, Glenn R.; Donaldson, Coleman duP.; Teske, Milton; Contiliano, Ross; Frieberg., Johnny

CORP Author

Aeronautical Research Associates, of Princeton, Inc., N.J.

Publisher

Office of Research and Monitoring, U.S. Environmental Protection Agency,

Place Published

Washington, D.C.

Year Published

1973

Report Number

EPA-R4-73-016c

Stock Number

PB-234 193

OCLC Number

47032430

Subjects

Atmospheric diffusion; Atmospheric motion; Air pollution; Turbulent diffusion; Transport properties; Chemical reactions; Reaction kinetics; Mixing; Photochemistry; Mathematical models

Internet Access

Description	Access URL
	http://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=9100YF70.txt

Holdings

Library		Call Number	Additional Info	Location	Date Modified
EJBD	ARCHIVE	EPA R4-73-016c		Headquarters Library/Washington,DC	04/04/2011
EKAD		EPA R4-73-016c		Region 4 Library/Atlanta,GA	08/17/2007
EKBD		EPA/R4-73-016c		Research Triangle Park Library/RTP, NC	06/01/2001
EOAD		EPA-R4-73-016c		Region 8 Technical Library/Denver,CO	10/25/2011
ESAD		EPA R4-73-016c		Region 10 Library/Seattle,WA	01/14/2005
NTIS		PB-234 193	Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.	NTIS	01/01/1988

Collation

1 v. (various foliations) : charts ; 28 cm.

Abstract

The primary intent of the work has been the assessment of the combined effects of turbulent diffusion and inhomogeneous chemistry on the dispersion and chemical alteration of reactive pollutants and natural constituents of the lower atmosphere. The fundamental chemical kinetic equations for an inhomogeneously mixed binary reaction system are derived exactly and solved for various initial conditions in order to assess the effects of inhomogeneous mixing on chemical reaction rates. These effects are shown to be highly significant in several atmospheric chemistry situations, particularly when the reactants emanate from multiple sources. An approximate second-order closure of the chemical sub-model is then developed and coupled with the second-order (invariant) turbulent diffusion model. Initial calculations of the interaction of turbulent diffusion and chemical reactions are presented, including a simulation of a multiple freeway situation. Conditions under which chemical reactions are diffusion and mixedness limited are illustrated.

Notes

EPA project officer: Kenneth L. Calder. Prepared by Aeronautical Research Associates of Princeton, Inc. "March 1973." Interim report. "Meteorology Laboratory, National Environmental Research Center." Includes bibliographical references. "EPA-R4-73-016c."

Supplementary Notes

OLS : Record

RECORD NUMBER: 12 OF 3440

Local Navigation