Main Title |
DEGADIS (DEnse GAs DISpersion) Model, Version 2.1 (for Microcomputers). |
Author |
Guinnup, D. ;
|
CORP Author |
Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards. |
Publisher |
1989 |
Year Published |
1989 |
Report Number |
EPA/SW/DK-90/034; |
Stock Number |
PB90-502253 |
Additional Subjects |
Model-simulation ;
Air pollution ;
Dispersions ;
Plumes ;
Gases ;
Mathematical models ;
Dilution ;
Trajectories ;
Diskettes ;
Chemical effluents ;
L=Fortran ;
H=DEC VAX
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB90-502253 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
1 diskette |
Abstract |
An improved Jet-Plume model has been interfaced with DEGADIS to provide for prediction of the trajectory and dilution of elevated dense gas jets to ground contact. DEGADIS predicts the ensuing ground-level plume dispersion. The Jet-Plume model provides for: automatic adjustment of integration step-size (using the Runge-Kutta-Gill method as in DEGADIS): elliptical plume shape (cross-section), with the Pasquill-Gifford plume dispersion coefficient representation of atmospheric turbulent entrainment; user specification of averaging time; ground reflection when the plume (lower) boundary reaches ground level; and application to scenarios where the plume remains aloft. The model should be uploaded via modem from a PC terminal to host a VAX computer, and several files must then be renamed prior to compilation and execution. The program is written in FORTRAN for compilation and execution on a DEC VAX Computer. |