MECANIQUE DES FLUIDES SCIENCES DE L'ENVIRONNEMENT	RADM Random-walk Advection and Dispersion Model
RADM is a Random-Walk model for simulation of dispersion processes in turbulent fluids. In particular it has been successfully used for air pollution studies. It employs a stochastic approach to solve the governing transport equations for motion of an inert or reactive species. It allows for arbitrary fluid and particle velocity to be surimposed on a random (or turbulent) motion of particles.
The particles may undergo chemical reaction, radioactive decay, settling and drag. Arbitrary complex terrain, arbitrary wind fields and inversion conditions are accommodated. Single or multiple fixed, mobile or area sources may be present...
NO2 concentration Emission of a chimney in urban area	NO2 concentration Pollution due to a freeway
The result can be graphically displayed by the acrPLOT post-processor, which can generate charts for flow vectors, contours, isovalue rasters, grids, 3D surface plots and X-Y plots at any cross section
NO2 concentration Emission due to freeway plus tunnels
RADM 's primary applications are in the pollution air though any dispersion process may be simulated. Typical petrochemical applications include those of air pollution from refinery stacks and effluents discharges.
EXAMPLES AVAILABLE : Chimneys in urban environment NO2 pollution due to a freeway Dataset example