铅铋环境绕丝燃料棒湍流振动响应分析

张珂; 王远岑; 黄茜; 刘建; 张毅雄; 余晓菲; 齐欢欢

doi:10.21656/1000-0887.450123

铅铋环境绕丝燃料棒湍流振动响应分析

doi: 10.21656/1000-0887.450123

1. 中国核动力研究设计院先进核能技术全国重点实验室，成都 610213;
2. 中国工程物理研究院总体工程研究所，四川绵阳 621900

基金项目:

四川省自然科学基金（2022NSFSC1943）

详细信息

作者简介:
张珂（1996—），男，工程师，硕士(E-mail: 614770892@qq.com);王远岑（1987—），男，助理研究员，博士（通讯作者. E-mail: wangyuancen@sina.cn）.

通讯作者:
王远岑（1987—），男，助理研究员，博士（通讯作者. E-mail: wangyuancen@sina.cn）.

中图分类号: TL334|O35
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- 文章访问数: 6
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出版历程
- 收稿日期: 2024-05-06
- 修回日期: 2024-11-01
- 网络出版日期: 2025-06-30

Analysis of Turbulent Vibration Responses of Wire-Wrapped Fuel Rods in Lead-Bismuth Fluids

Analysis of Turbulent Vibration Responses of Wire-Wrapped Fuel Rods in Lead-Bismuth Fluids

摘要

摘要: 液态金属铅铋的密度与黏度均远大于水，在反应堆中引起的燃料组件流致振动及磨损问题不可忽视.该文采用计算流体力学与有限元结构动力分析相结合的流固耦合分析方式，利用空间周期性与时间周期性，提出了绕丝燃料棒湍流振动响应的快速分析方法.利用绕丝燃料棒的空间周期结构建立单跨流场模型，基于CFD分析获得了铅铋环境流体激励载荷；利用湍流激励力功率谱密度的频域信息，开发等效时程扩展技术获得了用于振动分析的长时程载荷；考虑绕丝燃料棒间的非线性接触碰撞，建立有限元分析模型开展了振动响应分析.结果表明，轴向流动的液态铅铋会引起绕丝燃料棒的湍流抖振，最大振幅约为3.83 μm，满足工程设计要求.
- 绕丝燃料棒 /
- 流致振动 /
- 湍流抖振 /
- 铅铋环境
Abstract: The density and viscosity of liquid lead-bismuth metal are much larger than those of water, which causes nonnegligible flow induced vibration (FIV) and wear problems of fuel assemblies in the reactor. With the fluid-structure coupled analysis method combining the CFD and the FEM, a rapid analysis method for the turbulent vibration responses of wire-wrapped fuel rods was proposed in view of the spatial periodicity and time periodicity. For the space periodic structure of wire-wrapped fuel rods, a single-span flow field model was established, and the lead-bismuth environment fluid excitation load was obtained based on the CFD analysis. From the frequency domain information of the turbulent excitation force PSD, the equivalent time history extrapolation technique was developed to obtain long-duration loads for vibration analysis. With the nonlinear contact between the wire-wrapped fuel rods considered, an FEM model was established to carry out the vibration analysis. The results show that, the axial flow of liquid lead-bismuth causes turbulent vibrations of fuel rods, with a maximum amplitude of 3.83 μm, which meets the engineering design requirement.
- wire-wrapped fuel rod /
- flow induced vibration /
- turbulent vibration /
- lead-bismuth fluid environment

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参考文献(13)

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铅铋环境绕丝燃料棒湍流振动响应分析

doi: 10.21656/1000-0887.450123

作者简介:
张珂（1996—），男，工程师，硕士(E-mail: 614770892@qq.com);王远岑（1987—），男，助理研究员，博士（通讯作者. E-mail: wangyuancen@sina.cn）.

通讯作者:
王远岑（1987—），男，助理研究员，博士（通讯作者. E-mail: wangyuancen@sina.cn）.

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Analysis of Turbulent Vibration Responses of Wire-Wrapped Fuel Rods in Lead-Bismuth Fluids

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留言板

铅铋环境绕丝燃料棒湍流振动响应分析

doi: 10.21656/1000-0887.450123

作者简介: 张珂（1996—），男，工程师，硕士(E-mail: 614770892@qq.com);王远岑（1987—），男，助理研究员，博士（通讯作者. E-mail: wangyuancen@sina.cn）.

通讯作者: 王远岑（1987—），男，助理研究员，博士（通讯作者. E-mail: wangyuancen@sina.cn）.

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出版历程

Analysis of Turbulent Vibration Responses of Wire-Wrapped Fuel Rods in Lead-Bismuth Fluids

计量

出版历程

目录

作者简介:
张珂（1996—），男，工程师，硕士(E-mail: 614770892@qq.com);王远岑（1987—），男，助理研究员，博士（通讯作者. E-mail: wangyuancen@sina.cn）.

通讯作者:
王远岑（1987—），男，助理研究员，博士（通讯作者. E-mail: wangyuancen@sina.cn）.