CNPP performs modelling of damage reconstitution according to the configuration of the damaged places (geometry, content, building structure).

A model is a mathematical tool capable of recreating as closely as possible a physical incident.

There are various types of model:

• Empirical formulae
• Zone models
• Field models

According to the raised problem, CNPP uses different levels of model. However, the more sophisticated the model is, the longer the calculation takes.

The implementation of numerical simulation models such as C-fast or FDS can provide answers regarding:

• Spread of fire and smoke in complex geometries
• Effectiveness of smoke control
• Structures fire resistance
• Triggering delay of a detection or sprinkler system

Considering the uncertainties linked to the inevitable simplifications in the calculations code compared to the complexity of real physical phenomena, it is sometimes important to validate models on the basis of real tests carried out in conditions close to the situation to be examined.

Modelling is a very interesting tool for experts.

In addition to experimentation, several scenario models can be created at a reasonable cost. The expert can thus easily explore the scope of the possible fields in the fire potential spread.

When the involved materials or equipment are no longer available, modelling is the only way to reconstitute a damage.

Contact:
Tel: 33 (0)2 32 53 64 33
laboratoire-feu.environnement@cnpp.com