The objective of CFD exceedance analysis is to examine the flow of water when tank collapses and impact of the flow of water on surrounding building.
The VOF model is used as this is a surface-tracking technique applied to a fixed Eulerian mesh. It is designed for two or more immiscible fluids where the position of the interface between the fluids is of interest. In the VOF model, a single set of momentum equations are shared by the fluids in each computational is tracked throughout the domain
In tank without containment the water splashes so high that it reaches to the height of the district cooling plant main building & experiencing the maximum force of magnitude 650 MN and substation wall experiences the force of magnitude 30 MN. For tank with containment the water is restricted to the containment wall due to which the water splashes much higher than the previous case. The maximum normal force on the exceedance analysis of the containment wall is of magnitude 2700 MN which is much higher than the previous case.