A Hybrid CFD and Semi-Analytical Approach to Predict Cross-Flow-Induced Fluidelastic Instability of Tube Arrays
-
摘要: 横向流作用下管束结构传统流弹失稳模型的建立或多或少需要获取实验流体力参数作为输入条件.因此非常需要开发一种不依赖实验数据的管束结构流弹失稳模型.该文提出了一种改进的CFD仿真与半解析方法混合的管束结构流弹失稳预测方法.采用CFD仿真方法获取半解析模型中关键的相位延迟函数,并根据速度将其表示为简单的分段函数.最终预测了横向流作用下间距比为1.375的平行三角形与正三角形管束结构的流弹失稳阈值,预测结果与文献中的实验结果吻合良好.该文提出的CFD半解析模型混合方法同样适用于其他管束结构的流弹失稳预测,为蒸汽发生器传热管流弹失稳现象的研究提供了一种时间成本较低的预测方法.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.
-
Key words:
- fluidelastic instability /
- steam generator /
- phase lag /
- CFD /
- semi-analytical model
-
[1] 姜乃斌, 冯志鹏, 臧峰刚. 核工程中的流致振动理论与应用[M]. 上海: 上海交通大学出版社, 2018. (JIANG Naibing, FENG Zhipeng, ZANG Fenggang.Theory and Application of Flow-Induced Vibration in Nuclear Engineering [M]. Shanghai: Shanghai Jiaotong University Press, 2018. (in Chinese)) [2] WEAVER D S, ZIADA S, AU-YANG M K, et al. Flow-induced vibrations in power and process plant components: progress and prospects[J]. Journal of Pressure Vessel Technology,2000,122(3): 339-348. [3] PAIDOUSSIS M, et al. Real-life experiences with flow-induced vibration[J]. Journal of Fluids and Structures,2006,22(6/7): 741-755. [4] JR CONNORS H J. Fluid elastic vibration of tube arrays excited by cross flow[C]// ASME Symposium on Flow-Induced Vibration in Heat Exchanger, Winter Annual Meeting . 1970. [5] BLEVINS R D. Flow-Induced Vibration [M]. New York: Van Nostrand Reinhold Co, 1977. [6] BLEVINS R D. Fluid elastic whirling of a Tube row[J]. Journal of Pressure Vessel Technology, Transactions of the ASME,1974,96(4): 263-267. [7] PRICE S J, PAIDOUSSIS M P. An improved mathematical model for the stability of cylinder rows subject to cross-flow[J]. Journal of Sound and Vibration,1984,97(4): 615-640. [8] CHEN S S. Instability mechanisms and stability criteria of a group of circular cylinders subjected to cross-flow, part Ⅰ: theory[J].Journal of Vibration and Acoustics,1983,105(1): 51-58. [9] CHEN S S. Instability mechanisms and stability criteria of a group of circular cylinders subjected to cross-flow, part Ⅱ: numerical results and discussions[J]. Journal of Vibration and Acoustics,1983,105(2): 253-260. [10] LEVER J, WEAVER D. On the stability of heat exchanger tube bundles, part Ⅰ: modified theoretical model[J]. Journal of Sound and Vibration,1986,107(3): 375-392. [11] LEVER J, WEAVER D. On the stability of heat exchanger tube bundles, part Ⅱ: numerical results and comparison with experiments[J]. Journal of Sound and Vibration,1986,107(3): 393-410. [12] KHALIFA A, WEAVER D, ZIADA S. An experimental study of flow-induced vibration and the associated flow perturbations in a parallel triangular tube array[J]. Journal of Pressure Vessel Technology,2013,135(3): 030904. [13] KHALIFA A, WEAVER D, ZIADA S. Modeling of the phase lag causing fluidelastic instability in a parallel triangular tube array[J]. Journal of Fluids and Structures,2013,43: 371-384. [14] WEAVER D S, EL-KASHLAN M. The effect of damping and mass ratio on the stability of a tube bank[J]. Journal of Sound and Vibration,1981,76(2): 283-294. [15] WEAVER D S, GROVER L K. Cross-flow induced vibrations in a tube bank-turbulent buffeting and fluid elastic instability[J]. Journal of Sound and Vibration,1978,59(2): 277-294. [16] AUSTERMANN R, POPP K. Stability behaviour of a single flexible cylinder in rigid tube arrays of different geometry subjected to cross-flow[J]. Journal of Fluids and Structures,1995,9(3): 303-322. [17] CHEN S S. Flow-induced in-plane instabilities of curved pipes[J]. Nuclear Engineering and Design,1972,23(1): 29-38. [18] CHEN S S, JENDRZEJCZYK J A, LIN W H. Fluid-elastic instability of rectangular tube arrays subjected to liquid cross flow[C]// Fourth International Conference on Pressure Vessel Technology.Vol 2. 1980.
点击查看大图
计量
- 文章访问数: 864
- HTML全文浏览量: 233
- PDF下载量: 256
- 被引次数: 0