摘要
为分析换热器内锥螺旋弹性管束的流致振动强化换热情况,采用双向流固耦合的数值方法,分别研究入口流速和管排间距对其在壳程流体诱导下的振动响应及传热特性的影响。结果表明当入口流速由0.5m/s增大到0.9m/s,锥螺旋弹性管束的振动强度明显提高,管束的传热性能提高,流致振动使得管束的传热性能分别提高了5.2%、4.3%和3.5%,管束流致振动强化传热性能增强。随着管排间距从30mm增加到40mm,锥螺旋弹性管束的振动强度增大,流致振动使得管束的传热性能分别提高了2.5%、4.9%和3.1%,且管排间距为35mm时锥螺旋弹性管束的传热性能最佳,管束流致振动强化传热性能也最佳。
In order to study the heat transfer enhancement induced by fluid-induced vibration of conical spiral elastic tube bundles in heat exchangers,the effects of entrance velocity and tube pitch on the vibration response and heat transfer characteristics were studied with the bi-directional fluid-structure coupling calculation method.The results showed that the vibration intensity of the conical spiral elastic tube bundle increased when the entrance velocity increased from 0.5m/s to 0.9m/s and the heat transfer performance of the tube,enhanced by the tube vibration,improved by 5.2%,4.3%and 3.5%respectively.With the increase of the tube pitch from 30mm to 40mm,the vibration intensity of the conical spiral elastic tube bundle increased,and the heat transfer performance of the tube bundle increased by 2.5%,4.9%and 3.1%,respectively.When the tube pitch was 35mm,both the heat transfer performance of the conical spiral elastic tube bundle and that induced by the tube vibration were the best.
作者
季家东
刘保银
高润淼
陈卫强
JI Jiadong;LIU Baoyin;GAO Runmiao;CHEN Weiqiang(School of Mechanical Engineering,Anhui University of Science & Technology,Huainan Anhui 232001,China)
出处
《安徽理工大学学报（自然科学版）》
CAS
2022年第1期70-76,共7页
Journal of Anhui University of Science and Technology:Natural Science
基金
国家自然科学基金资助项目(52175070)
安徽省自然科学基金面上项目(1908085ME160)
安徽高校自然科学研究重点项目(KJ2018A0080)。
关键词
换热器
锥螺旋弹性管束
流致振动
振动强化传热
heat exchanger
conical spiral elastic tube bundle
fluid-induced vibration
vibration-enhanced heat transfer
