针对摇摆条件下的单相强迫循环流量瞬变特性开展流量波动影响机理研究。通过调节离心泵转速、阀门状态及摇摆参数分析驱动压头、回路阻力及附加压降对流量波动幅值的影响。通过建立摇摆条件下单相流量波动方程，系统地揭示摇摆运动的影响机理。结果表明，增加驱动压头和回路阻力使得相对流量波动幅值减小，增加附加压降使得相对流量波动幅值增大。当驱动压头大于附加压降幅值的10～11倍时，摇摆对单相强迫循环流量波动的影响可忽略。流量波动方程分析结果与流量波动实验结果有很好的一致性。%With a focus on the transient properties of the flow of single-phase forced circulation under rolling condi-tions, a study of the mechanism of the effects of flow fluctuation was carried out. The influences of the pressure head, flow resistance and additional pressure drop were analyzed by regulating the rotation speed of the centrifugal pump, state of the valve and rolling parameters respectively. And the mechanism of the effects of the rolling motion was revealed systematically by setting up the single-phase flow fluctuation equation. The results indicate that the fluctuation amplitude of the relative flow rate in rolling motion decreases rapidly as the pressure head and the flow resistance of the entire loop increase, and increase as the amplitude of the additional pressure drop increases. When the pressure head is higher than 10 to 11 times the amplitude of the additional pressure drop, the effect of the roll-ing motion on single-phase flow fluctuation could be neglected. The analysis result of the flow fluctuation equation is quite consistent with the results of the flow fluctuation experiments.
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