||Dispersion Model for Elevated Dense Gas Jet Chemical Releases. Volume 2. User's Guide.
Havens, an, J. ;
||Arkansas Univ., Fayetteville.;Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
||EPA/450/4-88/006B ; EPA/SW/DK-88/048B
Atmospheric models ;
Air pollution ;
Particle trajectories ;
State government ;
Local government ;
Mathematical models ;
Atmospheric dispersion ;
Computer models ;
Gaseous effluents ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The mathematical modeling techniques used to predict atmospheric dispersion of denser-than-air gases in the Ooms and DEGADIS models are briefly summarized. The Ooms/DEGRADIS model was written in FORTRAN with specific intent for compilation and execution on a Digital Equipment Corporation VAX computer. The Ooms model describes the release and subsequent dilution and trajectory of an elevated gas jet as a gas plume. If the plume falls to ground level, DEGADIS describes the resulting ground-level plume. DEGADIS can also be used to describe the release and dilution from a low-momentum, ground-level release. The necessary model-input information to simulate a denser-than-air gas release is summarized. Example simulations of steady-state and transient release and guidelines for installation of the models are included. The Ooms and DEGADIS models are listed along with certain program variables and diagnostic messages.