哈尔滨工程大学学报2025，Vol.46Issue(11)：2215-2224,10.DOI:10.11990/jheu.202508022
铅基反应堆板状燃料元件流致振动数值研究
Numerical study of flow-induced vibration in plate-type fuel elements of lead-based reactors
摘要
Abstract
To investigate the flow-induced vibration characteristics and generation mechanism of plate-type fuel as-semblies in lead-based reactors,this study employed a scale-adaptive turbulence model and computational structural mechanics methods to analyze the lead-bismuth flow field and to solve the deformation and vibration of fuel plates under the action of fluid pressure.A flow-induced vibration analysis model was developed,employing a partitioned fluid-structure interaction method as the underlying framework.Numerical results indicated that pressure difference fluctuations between adjacent closed channels were the primary cause of fuel plate vibrations.An empirical formula for the dominant frequency of pressure difference fluctuations as a function of flow velocity was proposed for the cur-rent structural parameters.The frequency classification of vibration signals was studied using the empirical mode decomposition method.The influence of the"harmonic"relationship between the natural frequency of the fuel plates and the excitation frequency of the fluid on the vibration characteristics was elucidated.The findings can pro-vide valuable references for the design and safety evaluation of fuel assemblies in lead-based reactors.关键词
铅铋/板状燃料元件/流致振动/流固耦合/压力差/模态/数值模拟/振动响应Key words
LBE/plate-type fuel element/FIV/FSI/pressure difference/mode/numerical simulation/vibration response分类
能源科技引用本文复制引用
姜炎明,夏榜样,陈冲,李小畅,赵海,田瑞峰,宋智广,温济铭,谭思超..铅基反应堆板状燃料元件流致振动数值研究[J].哈尔滨工程大学学报,2025,46(11):2215-2224,10.基金项目
中核集团领创项目(KY90200220011,KY90200230012) （KY90200220011,KY90200230012）
中核集团青年英才项目(KY90200230014) （KY90200230014）
国家自然科学基金项目(U22B2093). （U22B2093）
