Experimental Study on Cross-Flow Induced Vibrations in Heat Exchanger Tube Bundle

作     者：KHUSHNOOD Shahab NIZAM Luqman Ahmad 

作者机构：Department of Mechanical Engineering University of Engineering and Technology Taxila Pakistan Department of Mechanical Engineering HITEC University Taxila Pakistan 

出 版 物：《China Ocean Engineering》 (中国海洋工程（英文版）)

年 卷 期：2017年第31卷第1期

页      面：91-97页

核心收录：

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 080702[工学-热能工程] 0908[农学-水产] 0707[理学-海洋科学] 08[工学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 0824[工学-船舶与海洋工程] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the financial and technical support of University of Engineering and Technology  Taxila for carrying out the research 

主　　题：cross-flow tube bundle parallel Iriangular internal tube flow damping 

摘      要：Vibration in heat exchangers is one of the main problems that the industry has faced over last few decades. Vibration phenomenon in heat exchangers is of major concern for designers and process engineers since it can lead to the tube damage, tube leakage, baffle damage, tube collision damage, fatigue, creep etc. In the present study, vibration response is analyzed on single tube located in the centre of the tube bundle having parallel triangular arrangement （60-） with P/D ratio of 1.44. The experiment is performed for two different flow conditions. This kind of experiment has not been reported in the literature. Under the first condition, the tube vibration response is analyzed when there is no internal flow in the tube and under the second condition, the response is analyzed when the internal tube flow is maintained at a constant value of 0.1 rn/s. The free stream shell side velocity ranges from 0.8 rn/s to 1.3 m/s, the reduced gap velocity varies from 1,80 to 2.66 and the Reynolds number varies from 44500 to 66000. It is observed that the internal tube flow results in larger vibration amplitudes for the tube than that without internal tube flow. It is also established that over the current range of shell side flow velocity, the turbulence is the dominant excitation mechanism for producing vibration in the tube since the amplitude varies directly with the increase in the shell side velocity. Damping has no significant effect on the vibration behavior of the tube for the current velocity range.