摘要
利用CFD分析软件Fluent分别建立了安装角度为30°、45°、60°3种扇叶型折流板换热器周期性模型,对不同的流态进行数值模拟计算,研究了折流板安装角对扇叶型折流板换热器性能的影响.结果显示:壳程流体在折流板引导下呈斜向流动,斜向流动能够有效抑制流体诱导振动;筒体附近流体流速较高,中心区域流速较低;不同流态下,随着安装角增大,换热器壳程压降降低,综合性能增高.安装角30°时换热器传热系数大于另外两者.
Three periodic models with different installation angles of the blade baffle heat exchanger were established by the CFD analysis software Fluent.The installion angles were 30°,45°,60°,respectively.And the performance of heat exchanger with differerit installation angles was investigated.Results showed that in the diversion of the baffle,the shell-side flow became sideling flow,which could restrain the flow induced vibration effectively.The velocity of the fluid in the near wall region .was higher than that of the central region. With the increase of the installation angle,the shell-side pressure drop decreased,the comprehensive performance and the heat transfer coefficient of the heat exchanger inereased.When the installation angle was 30°the heat transfer coefficient was larger than the other two.
作者
谭国锋
王珂
王永庆
王丹
TAN Guofeng;WANG Ke;WANG Yongqing;WANG Dan(School of Mechanics and Engineering Science,ZhengzhoU University,Zhengzhou 450001,China;Key Laboratory of Process Heat Transfer and Energy Saving of Henan Proviee,Zhengzhou University,Zhengzhou 450002,China)
出处
《郑州大学学报（工学版）》
CAS
北大核心
2018年第6期74-77,共4页
Journal of Zhengzhou University（Engineering Science）
基金
国家自然科学基金资助项目(51476147
51376163)
河南省高等学校重点科研项目(18A470005)
关键词
扇叶型折流板
换热器
斜向流动
流体诱导振动
传热性能
blade baffle
heat exchanger
sideling flow
flow induced vibration
heat transfer performance
