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Fire modeling

Fire modeling techniques are used, either to analyse the behaviour of a building while exposed to fire, or to validate a wide range of hypotheses regarding the origin and cause for a fire. Two types of models may be used when analysing a fire:

  1. Zone Models. Zone models are easier to apply, require less calculations and provide reasonably accurate results, provided they are used within their limits;
  2. Computational Fluid Dynamics (CFD) Models. CFD Models are more complicated. Require much more calculation but provides more accurate results when used within their limits.

These two methods complement each other and are frequently used together.

These models predict the propagation and the release of combustion by-products during the course of a fire under various conditions. They help estimate the evolution of a fire over time in terms of the temperature of the surfaces and compartments, the exterior venting, the amount of smoke, the visibility, the concentration of gas species, etc. They can also be used to predict other relevant parameters, such as the heat release rate, flame height and radiation exposure of adjacent surfaces, etc.

In forensic engineering, these models are used either to approximate the conditions of the actual fire in order to validate hypotheses or to evaluate the impact of fire protection systems and fire mitigation measures on the propagation and spread of a fire.

Our fire-modelling experts are Fire Protection engineers that have successfully analysed a very wide range of fire scenarios that would have been far too costly to simulate physically.