A Hybrid CFD and Semi-Analytical Approach to Predict Cross-Flow-Induced Fluidelastic Instability of Tube Arrays

ZHAO Xielin; FENG Zhipeng; CAI Fengchun; YE Xianhui; ZHOU Jinxiong

doi:10.21656/1000-0887.410205

Volume 42 Issue 3

Mar. 2021

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Article Navigation > Applied Mathematics and Mechanics > 2021 > 42(3): 248-255

ZHAO Xielin, FENG Zhipeng, CAI Fengchun, YE Xianhui, ZHOU Jinxiong. A Hybrid CFD and Semi-Analytical Approach to Predict Cross-Flow-Induced Fluidelastic Instability of Tube Arrays[J]. Applied Mathematics and Mechanics, 2021, 42(3): 248-255. doi: 10.21656/1000-0887.410205

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A Hybrid CFD and Semi-Analytical Approach to Predict Cross-Flow-Induced Fluidelastic Instability of Tube Arrays

doi: 10.21656/1000-0887.410205

¹State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace Engineering, Xi’an Jiaotong University, Xi’an 710049, P.R.China
²Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu 610200, P.R.China

Funds: The National Natural Science Foundation of China（11972277）

Received Date: 2020-07-15
Rev Recd Date: 2021-01-15
Publish Date: 2021-03-01

Abstract

Abstract

Conventional theoretical models for fluidelastic instability analysis of a tube bundle subjected to cross flow require more or less experimental fluid force data as input. It is highly desirable to develop models independent of experimental data. An improved hybrid strategy was proposed through combination of the CFD simulation and the semi-analytical approach to predict fluidelastic instability of tube arrays. The key phase lag function in the semi-analytical model was extracted from the CFD simulation, and expressed as simple piecewise functions according to velocities. The cross-flow-induced fluidelastic instability thresholds of both parallel and equilateral triangular tube arrays with a pitch-to-diameter ratio of 1.375 were obtained and good agreement was achieved in comparison with experimental results. The developed approach can be used for fluidelastic instability analysis of other tube configurations, making a useful prediction tool dramatically saving time and cost.
- fluidelastic instability,
- steam generator,
- phase lag,
- CFD,
- semi-analytical model

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References(18)

References

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