摘要
螺旋管式换热器结构紧凑、热补偿性优良,用于小型模块化核反应堆中,其壳程内的流致振动(FIV)是诱发换热管失效的一个重要原因。针对核电站中的螺旋管式蒸汽发生器内部螺旋管流致振动问题,建立考虑支撑结构约束下的螺旋管有限元模型,采用三阶模态叠加下的计算流体动力学(CFD)/计算结构动力学(CSD)耦合方法,研究了相邻管的振动对目标管振动的影响。研究结果表明,三阶模态叠加耦合方法能更加精确地模拟换热管振动响应,流场中相邻两管的振动对目标管升力方向上的振动有明显的削弱现象。
Due to its compact structure and excellent thermal compensation,helical tube heat exchangers have been used in small modular nuclear reactor.The flow induced vibration(FIV)in the shell side is an important reason for the failure of the heat exchange tube.Aiming at flow-induced vibration of helical tube bundles from the helical coil steam generator in nuclear power plant,a finite element model of helical tube is established to consider the con-straint of support structure.The computational fluid dynamics/computational structural dynamics(CFD/CSD)cou-pling method based on superposition of three modes is used to study the influence of adjacent tubes on the vibration of target tubes.The results show that the three-order modes superposition coupling method can simulate the vibra-tion response of the heat exchange tube more accurately,and the vibration of adjacent two tubes in the flow field has obvious weakening effect on the vibration of the target tube in the lift direction.
作者
翟延飞
丁振宇
唐迪
杨佳欢
包士毅
ZHAI Yanfei;DING Zhenyu;TANG Di;YANG Jiahuan;BAO Shiyi(Institute of Process Equipment and Control Engineering,Zhejiang University of Technology,Hangzhou 310023;Engineering Research Center of Process Equipment and Re-Manufacturing of Ministry of Education,Hangzhou 310023;College of Mechanical Engineering,Zhejiang University of Technology,Hangzhou 310023)
出处
《高技术通讯》
CAS
2023年第1期97-105,共9页
Chinese High Technology Letters
基金
国家自然科学基金(52075489)
浙江省公益技术研究计划(LGG20E050017)资助项目。
