HNLA fire engineering utilizes Fire Dynamics Simulator from the National Institute of Standards and Technology in the USA. The package uses computational fluid dynamics (CFD) to produce predictions of heat and smoke distribution throughout the area studied. The software is capable of producing a virtual reality presentation of fire conditions.
Until recently fire modelling techniques were prohibitively expensive except for the largest of building projects. Now, thanks to advances in computer processing power and modern software, these techniques can be extremely cost effective.
Means of escape requirements imposed by standards guidance are based on assumptions which are often invalid. Evacuation modelling can help the building designer and the fire engineer work together.This cooperative approach produces a building that is able to function more effectively in the fire situation, whilst allowing more freedom in the design process.