真实流场中管束排列方式对流体诱导振动影响的研究  

Study on Influence of Tube Bundle Arrangement on Fluid-Induced Vibration in Real Flow Field

作　　者：殷天明 苏文献[1] 施卿海 YIN Tianming;SU Wenxian;SHI Qinghai(Institute of Chemical Machinery & Process Equipment,University of Shanghai for Science and Technology,Shanghai 200093 ,China)

机构地区：[1]上海理工大学化工过程机械研究所,上海200093

出　　处：《轻工机械》2018年第6期36-41,52,共7页Light Industry Machinery

摘　　要：针对工程应用中流体诱导换热器管束振动破坏的情况,搭建实验平台通过加速度传感器测得真实流场下管束的振动加速度响应,并在Workbench15. 0中采用双向流固耦合方法进行数值模拟。对比实验测得结果和数值模拟结果,分析不同排列方式和换热管数量的管束振动特性,发现正三角形排列比正方形排列管束更加稳定,更难发生流弹不稳定;外层横排管对其后第1排管束振动有促进作用,对其后第2排管束振动有抑制作用;沿着横流方向,后排管束振动受前排管抑制作用越来越大。对换热器的防振设计有一定的指导意义。Aiming at the vibration damage of the fluid-induced heat exchanger tube bundles in engineering applications,the experimental platform was built to measure the vibration acceleration response of the tube bundles under the real flow field by the acceleration sensors,and the two-way fluid-solid coupling method was used for numerical simulation in Workbench15. 0. Comparing the experimental results and the numerical simulation results,analyzing the vibration characteristics of the tube bundles with different arrangement modes and the numbers of heat transfer tubes,it is found that the equilateral triangle arrangement is more stable than the square arrangement tube bundle,and it is more difficult to cause the flow elastic instability; the outer horizontal pipe has the function of promoting the vibration of the first row bundle behind it,restraining the vibration of the second row bundle behind it; along the cross-flow direction,the vibration of the rear tube bundles is more and more inhibited by the front tubes. It has certain guiding significance for the anti-vibration design of heat exchangers.

关 键 词：固定管板式换热器 流体诱导振动 管束排列 流固耦合 真实流场 

分 类 号：TH123[机械工程—机械设计及理论] TK172[动力工程及工程热物理—热能工程]