Analysis of Control Rod Dropping and Buffering Behavior of Supercritical Water-Cooled Reactor Based on Dynamic Grid Technology
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摘要: 基于流体动力学(CFD)的动网格技术,对超临界水冷堆(SCWR)控制棒落棒行为进行动力学仿真分析,通过计算获得了控制棒落棒的特性参数及特性曲线。结果表明,控制棒落棒时间能满足反应堆安全分析的要求,但过大的落棒冲击会导致控制棒驱动线结构产生损坏。基于此结果,进一步对控制棒驱动线结构进行了优化设计研究,增设了水力缓冲结构,从而有效降低了控制棒落棒末速度。
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关键词:
- 超临界水冷堆(SCWR) /
- 控制棒驱动线 /
- 动网格 /
- 落棒时间 /
- 缓冲
Abstract: Dynamic simulation analysis of the control rod dropping behavior of the supercritical water-cooled reactor（SCWR） is carried out based on the dynamic mesh technology of computational fluid dynamics（CFD） in this paper. And the characteristic parameters and characteristic curves of the control rod drop are obtained by calculation. The results show that the control rod dropping time can meet the requirements of safety analysis of the reactor, but impact of control rod is too large to damage the structure of control rod drive line. Based on the above results, the optimization design of the control rod drive line structure is further studied, and the hydraulic buffer structure is added, which reduces the control rod dropping terminal velocity effectively. -
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