齿状凹槽型扭带在圆管中强化传热性能的数值模拟研究  

Numerical simulation of heat transfer enhancement performance of toothed groove twisted tape in circular pipe

作　　者：张春梅[1] 李宇轩 刘彬 杨鹏达 李权[1] Zhang Chunmei;Li Yuxuan;Liu Bin;Yang Pengda;Li Quan(School of Mechanical and Power Engineering,Shenyang University of Chemical Technology,Shenyang Liaoning 110142,China)

机构地区：[1]沈阳化工大学机械与动力工程学院,辽宁沈阳110142

出　　处：《石油化工》2022年第7期780-785,共6页Petrochemical Technology

基　　金：辽宁省自然科学基金项目(2019MS259)。

摘　　要：研究了一种新型内置齿状凹槽型扭带,并基于ANSYS Fluent软件在Re=800~1600下,对换热管内插入新型齿状凹槽型扭带的传热与阻力特性进行数值模拟研究。模拟结果表明,内置不同长径比的齿状凹槽型扭转扭带,换热管的平均Nu、阻力系数、综合性能评价因子(PEC)与场协同数(I)均随着扭带长径比的减小而增大;将不同长径比的齿状凹槽型扭带与传统SK型扭带进行对比研究,齿状凹槽型扭带的PEC与I都要高于传统SK型扭带。A new type of toothed groove twisted tape was studied,and the heat transfer and resistance characteristics of the new toothed groove twisted tape inserted into the heat exchange tube were numerically simulated based on ANSYS Fluent software at Re 800-1600.The results show that the average Nu,resistance coefficient,comprehensive performance evaluation factor(PEC)and field synergy number(I)of the heat exchange tube increase with the decrease of length diameter ratio of the twisted tape.Comparing the toothed groove twisted tape with different length diameter ratio with the traditional SK twisted tape,the PEC and I of the toothed groove twisted tape are higher than those of the traditional SK twisted tape.

关 键 词：数值模拟 扭带 阻力系数 传热 场协同 

分 类 号：TQ018[化学工程]