High resolution unsteady RANS simulation of wind, thermal effects and pollution dispersion for studying urban renewal scenarios in a neighborhood of Toulouse

Two urban renewal scenarios proposed by architects and local inhabitants are simulated under the same meteorological conditions. Increasing the height of anti-noise walls (from 3 to 6 m) does not improve the neighborhood air quality (except very locally) and the suppression of a big building block next to the ring road has a mixed effect, displacing the pollution (concentration increased in some area, decreased in some others).