Experimental study of shell side flow-induced vibration of conical spiral tube bundle  

作　　者：闫柯 葛培琪 洪军 

机构地区：[1]Key Laboratory for Modern Design and Rotor-Bearing System of MOE, Xi'an Jiaotong University [2]School of Mechanical Engineering, Shandong University [3]State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University

出　　处：《Journal of Hydrodynamics》2013年第5期695-701,共7页水动力学研究与进展B辑（英文版）

基　　金：Project supported by the China Postdoctoral Science Foundation(Grant No.2012M521768);the National Basic Research Program of China(973 Program,Grant No.2011CB706606)

摘　　要：Conical spiral tube bundles are widely used in enhancing the heat transfer via the flow-induced vibration in heat exchangers. The shell side flow-induced vibration of the conical spiral tube bundle is experimentally investigated in this paper. The experi- ment table was built and the operational modes, the vibration parameters of the tube bundle were analyzed. The results show that, the operational mode frequencies of the conical spiral tube are decreased as the shell-side fluid flow velocity increases, especially for the first order frequency. Within the parameter range of this experiment, the real working frequency of the conical spiral tube is between the 1 st and the 2nd operational modes, and the free end vibration amplitude of the tube bundle increases greatly when the shell side fluid flow velocity exceeds a critical value.Conical spiral tube bundles are widely used in enhancing the heat transfer via the flow-induced vibration in heat exchangers. The shell side flow-induced vibration of the conical spiral tube bundle is experimentally investigated in this paper. The experi- ment table was built and the operational modes, the vibration parameters of the tube bundle were analyzed. The results show that, the operational mode frequencies of the conical spiral tube are decreased as the shell-side fluid flow velocity increases, especially for the first order frequency. Within the parameter range of this experiment, the real working frequency of the conical spiral tube is between the 1 st and the 2nd operational modes, and the free end vibration amplitude of the tube bundle increases greatly when the shell side fluid flow velocity exceeds a critical value.

关 键 词：conical spiral tube bundle operational mode flow-induced vibration shell side fluid flow 

分 类 号：TB533.1[理学—物理]