外掠流体物性对浮动盘管振动影响的研究分析  

Study on the Effect of External Fluid Properties on Vibration of the Elastic Tube Bundle

作　　者：郑晨[1] 宋继伟[1] 刘成[1] 程林[1] ZHENG Chen SONG Ji-Wei LIU Cheng CHENG Lin(Institute of thermal science and technology, Shandong University, .Iin~ 250061, China)

机构地区：[1]山东大学热科学与工程研究中心,济南250061

出　　处：《工程热物理学报》2017年第8期1764-1767,共4页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展计划资助(No.2013CB228305)

摘　　要：本文以浮动盘管为研究对象,通过数值模拟与实验研究探讨了外掠流体的物性对浮动盘管振动特性的影响,引入附加质量系数描述其振动特性的变化。分析表明,在结构参数相同的条件下,流体诱导浮动盘管振动的附加质量系数随外掠水温度的升高而缓慢减小,对应浮动盘管的振动频率和努塞尔数随之缓慢增大。Elastic tube bundle was studied in this paper. Numerical simulation and experimental investigation were utilized to obtain vibration performance of elastic tube bundle induced by external fluid physical properties. Added mass coefficient was quoted in this paper to describe the characteristics of the vibration performance. Results show that, under the same geometric conditions, added mass coefficient for elastic tube bundle in shell-side fluid would slowly reduce with the rising fluid temperature, correspondingly flow-induced vibration frequency and Nusselt number of elastic tube bundle would slowly increase.

关 键 词：附加质量系数 浮动盘管 黏性系数 诱导振动 强化传热 

分 类 号：TK172[动力工程及工程热物理—热能工程]