3-D numerical simulation for flow-induced vibration characteristics of heat exchanger elastic tube bundle considering two-way fluid-structure interaction
LI Yuelin1, SUN Chao1,3, AI Shiqin1, LIU Yuechan1,2
1. School of Measurement-Control Technology and Communication Engineering, Harbin University of Science and Technology, Harbin 150080, China;
2. College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China;
3. Post-doctoral Research Mobile Station of Power Engineering and Engineering Thermo-physics, Harbin Engineering University, Harbin 150001, China
Abstract：The natural frequencies of single-span and multi-span heat exchanger tubes are calculated by numerical simulation. On this basis, the two-way fluid-solid coupling numerical simulation analysis is carried out for single, multi-pipe and out-of-pipe watersheds. The results show that the error between the calculated natural frequency and the theoretical value is basically less than 3%, and the same-order natural frequency decreases with the increase of the number of support failures. The vibration frequencies of single-span and multi-span pipes correspond to their lift and drag frequency one by one. The vibration displacement curve shows a typical Strouhal mode. The shape and amplitude of the vibration displacement curve of the symmetrical span of multi-span pipe are similar. The larger the distance between tube bundles is, the easier the vibration displacement curve is to appear Strouhal mode.
Key words: Heat exchange tube bundle; natural frequency; two-way coupling; flow induced vibration; numerical simulation
李岳霖1，孙超1,3，艾诗钦1，刘月婵1,2. 考虑双向流固耦合的换热器弹性管束流致振动特性三维数值模拟研究[J]. 振动与冲击, 2022, 41(17): 63-72.
LI Yuelin1, SUN Chao1,3, AI Shiqin1, LIU Yuechan1,2. 3-D numerical simulation for flow-induced vibration characteristics of heat exchanger elastic tube bundle considering two-way fluid-structure interaction. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(17): 63-72.
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