Research of quasi 2-D refined simulation and modeling for deaerator in nuclear power plant

Abstract Deaerator is an important component which is used widely in secondary loop system of nuclear power plant. In this work, the quasi 2-d simulation model for deaerator is developed. To make the simulation and modeling process more detailed and refined, some reasonable assumptions are proposed for mathematical modeling. There are two different zones of spraying zone and bubbling zone with more nodes. Simulating with practical physical process, the calculation process could demonstrate parameters distribution. In the steady state calculation and comparison, the simulation model is in good agreement comparing with design data onto actual nuclear power plant deaerator. The dynamic processes are validated by JTopmeret with main parameters. Two typical different dynamic processes are used to analyze deaerator operation characteristics. The refined different parameters distribution is calculated with time changing. It is real-time simulation model with such division that could guarantee the calculation speed and accuracy at the same time.

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