Main Title |
HEGADAS: Heavy Gas Dispersion Model (for Microcomputers). |
Author |
Marsden, A. ;
Guinnup, D. ;
|
CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards. |
Publisher |
27 Jan 89 |
Year Published |
1989 |
Report Number |
EPA/SW/DK-89/027; |
Stock Number |
PB89-164552 |
Additional Subjects |
Models-Simulation ;
Dispersions ;
Gases ;
Air pollution ;
Heat transfer ;
Evaporation ;
Water vapor ;
Diskettes ;
L=Fortran ;
H=IBM PC
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB89-164552 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
4 diskettes |
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). Software Description: The software is written in the FORTRAN language for use on an IBM PC or compatible machines using DOS 3.1 or higher operating system. Memory requirement is 512K. |