The research team focuses on modeling of flow and dispersion of pollutants in the atmospheric boundary layer and confined.
Team activities :
- Flow and dispersion in complex geometries
- Unsteadiness and concentration fluctuations
- Heat and density flow
Flow and dispersion in complex geometries
Urban canopy
For 15 years the AIR - Atmosphere, Impact & Risk team has developed a strong expertise in the use and parameterization of models Eulerian CFD RANS type for the study of flow and pollutant dispersion in complex terrain (terrain, obstacles) :
- Flow and dispersion in a street canyon
- Effect of the geometry of buildings (asymmetry, wall roughness,...)
- Thermal effects of surface temperature differences
- Dispersion in a neighborhood
- Influence the orientation of the neighborhood
- Influence of the geometry of streets
For 15 years the AIR - Atmosphere, Impact & Risk team has developed a strong expertise in the use and parameterization of models Eulerian CFD RANS type for the study of flow and pollutant dispersion in complex terrain (terrain, obstacles) :
- Parameterization of different states of stability.
- Adaptation of turbulence models (k-epsilon ou Rij-epsilon) .
- Coupling of the CFD approach with a lagrangian model (SLAM).
- Methodology development Flow'Air 3D to facilitate the operational implementation of the CFD simulation.
Unsteadiness and concentration fluctuations
Study of unsteady releases in urban area
- Studies in wind tunnel.
- Software development dispersion SIRANERISK.
- Studies in wind tunnel (probability distribution of fluctuations of concentration in a plume).
- Development of micro-mixing model in the lagrangian dispersion software : SLAM.
Heat and density flow
- Application to atmospheric flows in stable and unstable conditions
- Application to the dispersion of smoke in fires in confined spaces