Development of an atmospheric dispersion model for heavier-than-air-gas mixtures, volume 1
Abstract
The mathematical modeling techniques which have been used to predict atmospheric dispersion of heavy gases are reviewed and critiqued. These dispersion processes are characterized by three regimes or phases: near-field, negative buoyancy-dominated flow regime, intermediate-field, stably stratified shear flow regime, and far-field, passive turbulent diffusion regime. Mathematical models of laboratory and natural gravity currents are used to describe the negative buoyancy-dominated regime flow and dilution processes. The model concepts are consistent with the limiting passive behavior of demonstrated air pollution models. An interactive computer model for heavy gas dispersion (DEGADIS) is developed.
- Publication:
-
Final Report
- Pub Date:
- February 1985
- Bibcode:
- 1985arku.rept.....H
- Keywords:
-
- Air Pollution;
- Dispersing;
- Gases;
- Mathematical Models;
- Prediction Analysis Techniques;
- Buoyancy;
- Diffusion;
- Turbulent Flow;
- Turbulent Mixing;
- Geophysics