FLACS - Aerosol
Available soon
FLACS-AEROSOL is an enhancement of the capabilities of FLACS, FLACS-GASEX and FLACS-DISPERSION in the area of release and explosion of flammable liquids. Very often when a substance is stored at elevated temperature and pressure an accidental release may form a spray of mist or aerosol particles. One example is the Flixborough accident (Cyclohexane explosion, 1974). A significant fraction of leaks appearing in offshore oil exploration also forms clouds of aerosol and oil mist particles.
The properties of the liquid particles differ from those of gas. The liquid particles will be significantly denser than air, they may collide and grow bigger (coalescence), evaporation and condensation processes will influence the droplet distribution, and in an accelerated flow droplets may break-up into finer particles. Pools may be formed and lead to long duration evaporation of gas. Explosion properties are also different. Droplet combustion is somewhat slower than premixed gas combustion at optimal concentrations. Whereas gas explosions burn slower and eventually quenches for fuel rich concentrations, droplet explosion flame speeds can be very high also at rich concentrations.
Additional capabilities include:
- Predefined or user defined liquid/gaseous flammables
- Ability to define a droplet spray, or aerosol leak, including hybrid leaks
- Formation of pools, evaporation
- Simulation of droplet dispersion
- Simulations of water sprays and the effect on dispersion
- Explosion in clouds of mist or hybrid mixtures
- Additional output in connection with droplets
- And more