扭带对螺旋圆管传热特性的影响及场协同分析  

EFFECTS OF HEAT TRANSFER CHARACTERISTICS ON TWISTED TAPE IN HELICAL TUBE AND ANALYSIS OF FIELD SYNERGY THEORY

作　　者：林清宇[1] 刘鹏辉[1] 冯振飞[1] 朱礼[1] 李欢[1] LIN Qing-yu;LIU Peng-hui;FENG Zhen-fei;ZHU Li;LI Huan(School of Chemistry and Chemical Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]广西大学化学化工学院,南宁530004

出　　处：《真空与低温》2017年第1期41-45,共5页Vacuum and Cryogenics

基　　金：广西自然科学基金项目(2014GXNSFBA118051);广西石化资源加工及过程强化技术重点实验室主任基金(2015Z012);广西大学科研基金资助项目(XJZ130359)

摘　　要：为考察内插扭带对螺旋圆管传热特性的影响,以水为流动工质,分别对层流状态下有、无内插扭带的两种螺旋圆管进行数值模拟研究,具体探究内插扭带对螺旋圆管传热特性的强化作用,并结合场协同理论对其进行分析。结果表明,内置扭带对螺旋圆管努塞尔数的提升范围是3.2%~28.7%,当Re=34时,提升程度达到最大值28.7%;而通过对比两种螺旋圆管的场协同数,内置扭带增强了速度场和热流场之间的协同作用。To investigate the effects of twisted tape on heat transfer characteristics in helical tubes,a numerical study using water as working medium was carried out to investigate helical tubes with or without twisted tape under laminar flow,the enhancement on the heat transfer characteristics and the field synergy theory of twisted tape in helical tubes has been explored and analyzed. The results show that,as far as this study was concerned,the range of improvement on helical tube with twisted tape was 3.2-28.7%,when Re=34,it reached the maximum value of 28.7%;by comparison the field synergy number of two kinds of helical tubes,twisted tape enhanced the synergistic effect between velocity field and heat flow field.

关 键 词：螺旋圆管 扭带强化传热 场协同 

分 类 号：K124[历史地理—历史学]