流体诱发传热管振动的流场特性分析

冯志鹏; 臧峰刚; 张毅雄; 叶献辉

流体诱发传热管振动的流场特性分析

中国核动力研究设计院核反应堆系统设计技术重点实验室, 成都, 610041

详细信息

作者简介:
冯志鹏(1986—),男,博士研究生。1992年毕业于西南交通大学一般力学专业,获硕士学位。现从事反应堆结构力学研究工作。臧峰刚(1965—),男,研究员级高级工程师,博士生导师。1995年毕业于西南交通大学固体力学专业,获博士学位。现从事反应堆流致振动、断裂力学等研究工作。张毅雄(1973—),男,研究员级高级工程师。1997年毕业于哈尔滨工程大学工程力学专业,获学士学位。现从事反应堆结构力学研究工作

中图分类号: O322
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出版历程
- 收稿日期: 2013-05-13
- 修回日期: 2013-11-28
- 网络出版日期: 2025-02-15

Flow Characteristic Analysis of Flow Induced Heat Exchanger Tube Vibration

Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610041, China

摘要

摘要: 基于双向流-固耦合方法,建立横向流体作用下传热管流致振动计算的三维仿真模型;基于该模型,研究传热管流致振动时的流场特性。结果表明,当折减速度U_r≤2时,升力系数随Ur的增加而增加,阻力系数随U_r的增加先减小再增大;当2<U_r<9时,发生了升力方向的锁定,阻力先于升力达到峰值;当U_r≥9时,升力趋于零;弹性管的阻力是静止管的2～2.5倍,升力约是静止管的6倍;振动使得管表面压力分布和尾涡结构发生了变化,弹性管后的旋涡横向间距较静止单管明显增大,仅出现2S模式的尾涡模态。
- 流体诱发振动 /
- 流场结构 /
- 计算流体力学(CFD) /
- 计算结构力学(CSD)
Abstract: A three-dimensional numerical model for heat transfer tube vibration induced by cross flow is proposed with two ways coupled approach. The characteristics of flow field are investigated based on the numerical model. The results show that, when Ur≤2, lift force coefficient increases as Ur increases, while drag force coefficient decreases first and then increases. When 2＜Ur＜9, the Locked In phenomenon occurs and drag force reaches the peak value prior to that of lift force. As Ur≥9, lift force is tending to zero. The drag force of flexible tube is about 2~2.5 times of that of the fixed tube, and the lift force is 6 times. Vibration makes the pressure distribution and wake vortex mode change. The transverse space between vortexes is amplified obviously compared to the case of fixed tube. There is only 2S mode existing in the present study.
- Flow induced vibration /
- Flow characteristics /
- CFD /
- CSD