3-D numerical simulation for flow-induced vibration characteristics of heat exchanger elastic tube bundle considering two-way fluid-structure interaction

被引：0
|
作者：
Li Y. [1 ]
Sun C. [1 ,3 ]
Ai S. [1 ]
Liu Y. [1 ,2 ]
机构：
[1] School of Measurement-Control Technology and Communication Engineering, Harbin University of Science and Technology, Harbin
[2] College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin
[3] Post-doctoral Research Mobile Station of Power Engineering and Engineering Thermo-physics, Harbin Engineering University, Harbin
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2022年 / 41卷 / 17期
关键词：
flow-induced vibration; heat exchange tube bundle; natural frequency; numerical simulation; two-way interaction;
D O I：
10.13465/j.cnki.jvs.2022.17.008
中图分类号：
学科分类号：
摘要：
Here, to study flow-induced vibration characteristics of heat exchanger tube bundle, 3-D numerical simulation for heat exchanger tube bundles considering two-way fluid-structure interaction was performed. The 3-D finite element model for heat exchange tube and its inside and outside watersheds was established, and natural frequencies of single-span tub and multi-span tube were calculated. Considering the randomness of effective support between heat exchange tube and its support plate, natural frequencies and vibration modes of a four-span tube under its support plate being invalid were calculated. Then, two-way fluid-structure interaction numerical simulation analyses were performed for single tube, multi-tube and off-tube watershed. The results showed that errors between calculated natural frequencies and their theoretical values are basically less than 3%; the same order natural frequency decreases with increase in number of invalid supports; natural vibration frequencies of single-span tube and multi-span tube correspond to their lift frequencies and drag frequencies one by one; shapes and amplitudes of vibration displacement curves for multi-span tubes’ symmetric spans are similar; the larger the tube bundle spacing, the smaller the interaction among tubes, and Strouhal vibration mode is easier to appear on tube vibration displacement curves. © 2022 Chinese Vibration Engineering Society. All rights reserved.
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页码：63 / 72
页数：9
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