摘要
为提高核电厂海水循环泵运行的稳定性,基于CFD数值模拟对海水循环泵肘形进水流道进行优化设计。以国内某核电厂的进水流道为研究对象,建立全新坐标系,通过理论推导得出肘形流道控制参数之间的函数关系,根据流道性能评判指标等参数,通过数值模拟研究肘形进水流道4个重要控制参数对流道水力性能的影响,优选出最佳方案并进行试验验证。结果表明,在设计流量下优化后的流道出口平均流速提高了0.026 m/s,流速分布均匀度降低0.13%,水流平均角度提高0.034°,水力损失降低11.2%。本文的研究结果显示提出的肘形流道优化设计方法快速、可靠,具有出口流态较好、水力损失较小等优点,可为工程建立提供一定的参考。
To improve the operation stability and construction economy of the seawater circulating pump in nuclear power plant,the elbow inlet channel of the seawater circulating pump was optimized based on CFD numerical simulation.Taken the inlet flow path of a domestic nuclear power plant as the research object,a new coordinate system was established.The functional relationship among parameters of the el-bow flow path control was obtained by theoretical deduction.According to performance evaluation indexes of the flow channel,the influence of the four main parameters of the elbow inlet channel on its hydraulic performance has been studied by numerical simulation.Meanwhile,the optimized elbow inlet channel was verified by experiment.The results show that under the design flow rate,the average flow velocity at the outlet of the optimized flow channel is increased by 0.026 m/s,and the uniformity of flow velocity distribu-tion is reduced by 0.13%,and the average flow angle is increased by 0.034°,and the hydraulic loss de-creases by 11.2%.It can be seen that the elbow channel optimization design method proposed in this paper is fast and reliable,and has the advantages of good outlet flow pattern and small hydraulic loss.It can provide a favorable reference value for the establishment of the project.
作者
张郭杨
智一凡
朱荣生
林彬
付强
ZHANG Guoyang;ZHI Yifan;ZHU Rongsheng;LIN Bin;FU Qiang(Research Center of Fluid Machinery Engineering and Technology Jiangsu University,Zhenjiang 212013 China;China Nuclear Power Engineering Co.,Ltd.,Beijing 100840 China;The Joint Lab of Intelligent O&M for NPP Pump,Zhenjiang 212013 China)
出处
《西华大学学报（自然科学版）》
CAS
2024年第6期80-88,共9页
Journal of Xihua University:Natural Science Edition
基金
国家自然科学基金联合基金重点项目(U20A20292)。
关键词
核电厂海水循环泵
肘形进水流道
数值模拟
模型试验
水力性能
seawater circulating pump for nuclear power plant
elbow inlet channel
numerical simulation
model test
hydraulic performance
