Confined & Semi-confined Dispersion, Fire, Explosion

Ventilation and industrial risk analysis in buildings, tunnels and mines using advanced 3D CFD solutions

fluidyn-VENTIL is a software family for 3D numerical simulations of flows in buildings, tunnels, mines and in any other confined or semi-confined spaces. fluidyn-VENTIL software can be used for air ventilation flows, or in case of continuous or accidental dispersion:

Ventilation flows (including HVAC): Concerns specifically computation of air flows in case of natural and/or forced ventilation systems (HVAC). Air quality can be accurately computed in confined places, buildings, tunnels, mines with fluidyn-VENTIL software family.
Risk Analysis: Concerns specifically computations of various possible risk impacts, such as hazardous gases dispersion , fire impact, explosion impact. Risk analysis can be accurately computed in confined places, buildings, tunnels, mines, with fluidyn-VENTIL software family.


fluidyn-VENTIL is composed of the following distinct modules, each integrated with the same facilities for geometry, mesh and model set-up for 3D CFD computations:
fluidyn-VENTCLIM: Ventilation (comfort) + risk analysis (chronic and accidental) in buildings and confined spaces
fluidyn-VENTUNNEL: Ventilation (comfort) + risk analysis (chronic and accidental) in tunnels (rail & road)
fluidyn-VENTEX : Dispersion and explosion risk analysis
fluidyn-VENTMINE: Ventilation (comfort) + risk analysis (chronic and accidental) in mines

Salient Features :
fluidyn-VENTIL software is integrated with a user-friendly interface, which is simplified for users to define geometry and mesh, and for model set-up for each applications:
Geometry of tunnels, buildings with obstacles (cars, trains, ships, barges, others, ...) and venting conditions
General source terms : Hazardous gases for dispersion, fire, evaporation, momentum (steady car motions), pistoning effect (linked to train motions)
Fast meshing and adapted to physical problems treated
Optimisation of CFD solver parameters for accurate solutions.

fluidyn-VENTIL software have optimized 3D CFD solutions for ventilation problems (Low-Mach numbers) or coupled physics phenomena solutions such as : High thermal fluxes and buoyancy problems (fire) or fast transient for combustion flows (explosions). These optimized solvers are validated and taken from the fluidyn-MP multiphase numerical platform and can accurately solve:
Mean turbulent velocities in any confined room (building, tunnel, mine) by the computation or the pressure-velocity coupling. Takes into account specific and possible transient pressure conditions.
Associated thermal flows (buoyancy) and wall heat transfer (convection/conduction/radiation).
Turbulence parameters inside the confined domain (turbulent viscosities/diffusivities)
Gas mixtures up to 50 species
Reactive flows with different types of combustion model
Two-phase flows
Other specific physical phenomena (spray curtains, deposition,...)