In order to improve the accuracy of the heat transfer capability evaluation for passive containment cooling system (PCCS) in China’s advanced pressurized reactor (CAP1400), an advanced simulation model is developed based on stratified phenomenon in large enclosures, in which one–dimensional differential equations are used to get temperature and velocity profiles for the ambient fluid. The mixing and heat transfer experiment in a large rectangular enclosure with an injected buoyant jets and a cooled vertical surface is analyzed as an example, which simulates a break flow for passive reactor containment system. The results of the new model have good agreement with that of ANSYS CFX Version 12.1, while the running time of the new model is only about 20% of the time ANSYS CFX takes.

Volume Subject Area:
Student Paper Competition
Topics:
Containment, Cooling systems, Mixed convection, Heat transfer, Containment systems, Differential equations, Flow (Dynamics), Fluids, Jets, Simulation models, Temperature
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