Resolving the flow and pollutant concentrations at the highest
possible resolution is of paramount importance in atmospheric
chemistry calculations especially when dealing with chemical reactions
in plumes. The Operational Multiscale Environment model with Grid
Adaptivity (OMEGA) is used to explore the modeling of pollutant
plumes. OMEGA is built upon an unstructured adaptive grid made up of
triangular prisms. OMEGA also has an embedded Atmospheric Dispersion
Model (ADM). The ADM uses a puff approach to disperse the
pollutants. The particles are treated as centroids of growing puffs,
with the growth determined by the ambient turbulent characteristics.
OMEGA also features a particle diffusion algorithm using a Monte Carlo
method with a receptor-oriented concentration calculation algorithm.
Advantages of Solution-Adaptive Grid Generation
Animations of Solution-Adaptive Grid Generation
Eruption of Mt. Etna in October 2002