Theoretical Calculation and Analysis of Critical Heat Flux Characteristics under Flow Oscillation Conditions
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摘要: 利用流量波动作用下瞬态临界热流密度程序,对矩形通道内入口流量波动条件下临界热流密度特性进行计算分析。结果表明:入口流量波动会对临界热流密度有明显影响,特别是入口流量波动幅值和周期的增大、时均流量的增加、加热长度的减小或出口含汽率的降低将使临界热流密度特性恶化,从而对反应堆系统安全性产生不利影响。Abstract: The transient CHF calculation code was used to analyze the CHF characteristics under inlet flow oscillation conditions. The calculation results show that: Inlet flow oscillation would have significant effects on critical heat flux. Especially the CHF characteristics would be deteriorated when the oscillation magnitude and period are increased, the heated length is decreased or the outlet quality is decreased. The effect of inlet flow oscillation on CHF would have detrimental impact on the safety of the reactor system.
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