Modeling of Fluid and Structure Interactions

12.146. Related to the system modeling codes there is the need to ex­amine the mechanical effects on components resulting from the strong depressurization waves during a LOCA. Since dimensionality is important for such analysis, the approach used is to start with a two-dimensional, homogeneous, equilibrium code to model the two-phase blowdown and then use a special-purpose code to model the motion of such components as the core barrel of a PWR [15].