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.
俞逸杰，宋继伟，柴小明，侯兰雅，程林. 弹性管束湿模态频率变化对传热特性影响分析[J]. 振动与冲击, 2019, 38(23): 265-270.
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. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(23): 265-270.
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