Preventing catastrophic natural disasters

Due to global warming and the rapid climate change it induced, massive flooding and dam break events are catastrophic natural disasters which consequences more than ever need to be analyzed.

The application

The frequency of heavy rains and subsequent floods has intensified in recent years. Several causes can be mentioned: global warming, population growth leading to more and more constructions are among them. Land-use planning reconsideration is now an emergency.

Natural hazard prevention professionals must assess the flow behavior of watercourse in the event of a flood, or mud during a landslide, and identify with high precision areas that should remain unurbanized. While real-scale experiments are out of consideration, numerical simulation is a not a secondary approach, but a must-have solution.

Our solution

 Our CFD solution can be of great assistance to help natural hazard prevention.

The particle-based Lagrangian SPH-flow solver offers key features and characteristics that address that challenge. Among them, the ability to account for the fluid phase only, without paying the cost of simulating the air phase whose influence can be neglected for such event. The capability of the method to inherently track free surfaces makes all the difference: it can properly describe the irregularity and the violence of the flow.

We have gained experience in the simulation of dam break. From elemental academic setup, to real civil disaster, the key physical phenomena have been addressed using advanced SPH-flow numerical models. The CFD simulation which have been carried out over the half-hour following the dramatic 1959 Malpasset dam break demonstrates excellent correlation with the actual event observation.