Effects of elastic tube bundle&rsquo;s wet modal frequency variation on its heat transfer characteristics

PDF(1533 KB)

Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (23) : 265-270.

Effects of elastic tube bundle’s wet modal frequency variation on its heat transfer characteristics

YU Yijie,SONG Jiwei,CHAI Xiaoming,HOU Lanya,CHENG Lin

Author information +

History +

Abstract

In order to study effects of an elastic tube bundle’s wet modal frequency change on its heat transfer characteristics, here, the elastic tube bundle was taken as the study object to do modeling under actual operating conditions and numerical simulation of wet modal analysis.The added mass coefficient was used to characterize variation of the elastic tube bundle’s wet modal frequency, considering effects of fluid’s flow velocity and viscosity, the added mass coefficient corresponding to wet modal frequency was calculated.Elastic element’s heat transfer performance was analyzed with change of wet modal frequency.The results showed that the higher the fluid viscosity, the larger the added mass coefficient for the elastic tube bundle, the more the drop of elastic element’s wet modal frequency; with increase in incoming flow’s velocity, wet modal frequency of elastic element in a flow field increases; external flow field’s fluid velocity and viscosity affect elastic elements, the higher the wet modal frequency, the smaller the added mass coefficient, and the better the surface heat transfer effect.



Key words

elastic element / wet modal frequency / added mass coefficient / external flow field

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

YU Yijie,SONG Jiwei,CHAI Xiaoming,HOU Lanya,CHENG Lin. Effects of elastic tube bundle’s wet modal frequency variation on its heat transfer characteristics[J]. Journal of Vibration and Shock, 2019, 38(23): 265-270

References

[1] 程林,田茂诚,林颐清等.弹性管束汽-水换热器强化传热试验研究[J].工程热物理学报, 2001,22(2):199-202.
     Cheng Lin, Tian Mao-cheng, Lin Yi-qing, et al. Experiment investigation of heat transfer enhancement in steam-water heat exchangers made up with elastic tube bundles [J]. Journal of Engineering Thermophysics, 2001,22(2):199-202.
[2] 姜波,田茂诚,冷学礼等. 振动管外流动与传热实验研究及场协同分析[J].振动与冲击, 2009,28(5):102-105.
     Jiang Bo, Tian Mao-cheng, Leng Xue-li, et al. Experimental research and field synergy analysis of flow and heat transfer outside a vibratory tube [J]. Journal of Vibration and Shock, 2009,28(5):102-105.
[3] 季家东, 葛培琪, 毕文波. 流体诱导弹性管束振动响应数值分析[J]. 振动与冲击, 2016,35(6):80-84.
     JI Jia-dong，GE Pei-qi，BI Wen-bo. Numerical analysis on flow-induced vibration responses of elastic tube bundle [J]. Journal of Vibration and Shock, 2016, 35(6): 80-84.
[4] 季家东, 葛培琪, 毕文波. 换热器内多排弹性管束壳程流体诱导振动响应的数值分析[J]. 振动与冲击, 2016(20):85-89.
     JI Jia-dong，GE Pei-qi，BI Wen-bo. Numerical analysis on shell-side flow induced vibration responses of multi-row elastic tube bundles in heat exchangers [J]. Journal of Vibration and Shock, 2016(20): 85-89.
[5] 郑继周, 程林, 杜文静. 弹性管束动态特性子结构模态综合法[J]. 机械工程学报, 2007,43(7):202-206.
     Zheng Ji-zhou, Cheng Lin, Du Wen-jing. Dynamic Characteristics of Elastic Tube Bundles with Component Mode Synthesis Method [J]. Journal of Mechanical Engineering, 2007,43(7):202-206.
[6] 闫柯,葛培琪,张磊等.平面弹性管束管内流固耦合振动特性有限元分析[J].机械工程学报, 2010,46(18):145-149.
     Yan Ke, Ge Peiqi, Zhang Lei, et al. Finite Element Analysis of Vibration Characteristics of Planar Elastic Tube Bundle Conveying Fluid [J]. Journal of Mechanical Engineering, 2010,46(18):145-149.
[7] 程林，田茂诚，张冠敏.一种复杂非线性传热元件的传热及污垢特征[J].工程热物理学报，2004，25 (1):130-132．
     Cheng Lin, Tian Mao-cheng, Zhang Guan-min. The Heat Transfer and Fouling Property of Complex Non-Linear Heat Transfer Element [J]. Journal of Engineering Thermophysics, 2004,25(1):130-132.
[8] 郑治国,孙大成,刘宪亮.用湿模态法进行流固耦合分析时一个问题的探讨[J].华北水利水电学院学报,1998,19(2):22-25.
     Zheng Zhi-guo, Sun Da-cheng, Liu Xian-liang. A discussion in the analysis of fluid-solid coupling with wet mode [J]. Journal of North China University of Water Resources and Electric Power, 1998,19(2):22-25.
[9] 郑继周, 程林, 张树生等. 复杂激励下有限长薄壁圆柱壳体导纳研究[J]. 振动与冲击, 2007,26(3):120-123.
     Zheng Ji-zhou, Cheng Lin, Zhang Shu-sheng, et al. Mobility of A Finite Long and Thin Cylindrical Shell Subjected to Complex Excitation [J]. Journal of Vibration and Shock, 2007,26(3):120-123.
[10] CHEN SS, WAMBSGANSS MW, JENDRZEJCZYK JA. Added mass and damping of a vibrating rod in confined viscous fluids[J]. Journal of Applied Mechanics, 1974,43(2): 325-329.
[11] 程林.换热器内流体诱导振动[M]. 科学出版社, 1995.
     Cheng Lin. The fluid induced vibration in the heat exchanger [M]. Science Press, 1995.
[12] GB/T151-2014,热交换器[S].
GB/T151-2014, Heat exchangers[S].
[13] LEMLICH R, RAO MA. The effect of transverse vibration on free convection from a horizontal cylinder[J]. International Journal of Heat & Mass Transfer, 1965,8(1):27-33.
[14] 吴国钊. 附面层理论[M]. 航空工业出版社, 1989.
Wu Guo-zhao. Boundary layer theory [M]. Aviation industry press., 1989.
[15] 姜波. 振动强化传热机理分析及新型振动传热元件实验研究[D]. 山东大学, 2010.
    Jiang Bo. Analysis on Mechanism of Heat Transfer Enhancement by Vibration and Experimental Research on a New Type of Vibrational Heat Transfer Component[D]. Shandong University, 2010.