Study on Source Term Evaluation Method in Simulation and Scaling for Containment during LOCA

Source term is one of the most important parameters involved in the simulation of LOCA inside containment.It may affect facilities scale,simulation stage,equipment design level and simulating authentic.Based on the scaling rules related to the total break enthalpy,force jet and buoyant plume and heat and mass transfer process,the time scale of heat/mass transfer and flow dissipation are normalized to the time scale of natural circulation.It proves that the natural circulation process time ratio is the dominant parameter for whole system design.Functions which can be applied for geometry sizes and boundary conditions are also provided.