Research on multi-objective optimization method for flow distribution of natural circulation reactor during its life-cycle

Core flow distribution is closely related to the thermal–hydraulic performance and safety of reactors. For natural circulation reactors with a limited driving force, flow distribution optimization is of particular significance, which can be contrived by suitably assigning the inlet resistance of a core assembly channel in reactor design. In the present work, core flow distribution optimization during the fuel life cycle is regarded as a global optimization problem. The optimization objective is to minimize the maximal outlet temperature difference of assembly channels during the fuel life cycle, while the input variable is the inlet resistance coefficient of each assembly channel. The simulated annealing algorithm is applied to the optimization code. The results show that the maximal outlet temperature difference is significantly reduced after optimization, and the resultant core outlet temperature distribution becomes more uniformed. Further evaluation indicates that the optimal solution has good applicability and stability under different reactor conditions. A comparison of the optimization objective function using different temperature difference definitions is also studied in the current study.

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Research on multi-objective optimization method for flow distribution of natural circulation reactor during its life-cycle

Cited by 3 publications

References 11 publications

Numerical and experimental investigation of a multi-channel heat sink distribution header designed by topology optimization

Numerical and experimental investigation of a multi-channel heat sink distribution header designed by topology optimization

Core flow distribution optimization of a natural circulation reactor using genetic algorithm, simulated annealing and characteristic statistic algorithm

Application of Simulated Annealing Algorithm in Core Flow Distribution Optimization

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