An important part of the risk analysis of a public building and subway rail systems is a fire and smoke modeling study. Authorities are now recognizing CFD simulations of fire and ventilation scenarios as an important stage of the design cycle. As well as optimising the natural ventilation strategy in the event of a fire, CFD models can also be used to provide information on fire development and smoke migration. The results are used to ensure that, in the unlikely event of a fire, the ventilation system preserves the integrity of the escape routes and exits and to optimize the position of smoke detectors and water sprinklers.

Fire protection scenarios were reviewed by simulating static pressure on the outer surfaces of the Frankfurt Airport during differing wind conditions.