fCuidyn -PANACHE ENVIRONMENT AND INDUSTRIAL RISK ANALYSIS WITH 3D FLUID DYNAMICS fCuidyn - PANACHE 4.0 is a software family dedicated to the simulation of atmospheric pollutant dispersion and air quality prediction. The modelling tools in fCuidyn - PANACHE 4.0 include deterministic solutions of the 3D fluid dynamics equations with structured and unstructured meshes. fCuidyn - PANACHE 4.0 takes into account different physical phenomena such as : o Large and small scale dispersion * Effects of complex 3D topography * Effects of buildings and obstacles * Effects of different types of land cover o Weather conditions (including |ow winds) o Atmospheric turbulence and mechanical turbulence around obstacles o Transient or chronic releases with any kind of pollutant (heavy gases, hot gases, light gases, particles...). An user friendly interface allows easy and fast use of fCuidyn - PANACHE 4.0 family tools for pre processing phases (numerical model construction, source term definition, meshing...) and post processing phases (results analysis). fCuidyn - PANACHE 4.0 is derived into several modules depending on the applications: fCuidyn - PANEPR Accidentai dispersions ■ Heavy gases: gravity phenomena, stratification, heat exchange with ground ■ Multiple sources: stacks, point, road, surface and volume sources ■ Near field modelling of local phenomena (obstacles, buildings...) ■ Droplets formation, transport, aerosol and pool evaporation ■ Dispersion of combustion products due to fire ■ Emergency response: fast estimation of plume dispersion in case of accidents. fCuidyn - PANEIA Industriai impact on air quaiity ■ Annual mean impact as per wind rose diagrams ■ Precise modelling of local phenomena in near field (due to obstacles, buildings...); ■ Urban and industrial impact ■ PM-, droplets and odour: dispersion, source identification ■ Measurement site choice (pollution and wind) ■ Panache visibility ■ Quantitative elements for health risk assessment (inhalation, contact, ingestion) fCuidyn - PANAIR Urban air quaiity

Atmospheric dispersion using 3D CFD tools fluidyn - PANACHE Other dedicated modules: fluidyn - PANROAD Atmospheric dispersion due to traffic fluidyn - PANFIRE Heat radiation due to solid and liquid fires fluidyn - PANEOLE Wind power analysis & map for potential, farms & micro-siting fluidyn - PANWAVE Wave effect on retention bunds fluidyn - PANWIND Airflow calculation around obstacles fluidyn - PANACHE 4.0 technology is also applied on other environmental problematic : fluidyn - FLOWCOAST Numerical simulation of surface water flows Pollutant slick dispersion (sea and river) Օ Currentology: river,...