||HEGADAS: Heavy Gas Dispersion Model (for Microcomputers).
Marsden, A. ;
Guinnup, D. ;
||Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
||27 Jan 89
Air pollution ;
Heat transfer ;
Water vapor ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
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.