| 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. |
| Availability Notes |
The software is contained on 5 1/4-inch diskettes, double density (360K), compatible with the IBM PC microcomputer. The diskettes are in the ASCII format. Price includes documentation, PB89-164560. |
| NTIS Title Notes |
Model-Simulation. |
| Category Codes |
68A#; 91A; 43F; 62 |
| NTIS Prices |
CP D99 |
| Primary Description |
200/04 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
914521379 |
| Origin |
NTIS |
| Type |
CAT |
