OLS : Record

RECORD NUMBER: 33 OF 82

Main Title HEGADAS: Heavy Gas Dispersion Program. User's Guide.
Author Witlox, H. W. M.; Puttock, J. S.; Colenbrander, G. W.;
CORP Author Shell Research Ltd., Chester (England).;Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
Publisher Aug 88
Year Published 1988
Report Number EPA/SW/DK-89/027A;
Stock Number PB89-164560
Subjects Dispersions; Gases; Air pollution; Mathematical models; Heat transfer; Evaporation; Water vapor; Documentation; User manuals(Computer programs)
Holdings
Library   Call Number Additional Info Location Date Modified
NTIS PB89-164560 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 08/24/1989
Collation 105p
Abstract The HEGADAS program models the dispersion of releases of heavier-than-air gases to the atmosphere. The model is an integral model which uses assumed profile (e.g., concentration profile) shapes and empirical relations describing air entrainment. The model provides for a smooth transition to passive dispersion. Descriptions of heat transfer from the ground and water vapor transfer are also included. The source release rate may be constant or time-dependent (e.g., evaporating liquid pool).
Supplementary Notes For system on diskette, see PB89-164552. Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
Category Codes 68A#; 91A; 43F; 62
NTIS Prices PC A06/MF A01
Primary Description 200/04
Document Type NT
Control Number 914521388
Cataloging Source NTIS/MT
Origin NTIS
Type CAT