螺旋槽管管内强化传热的三维数值模拟-《郑州大学学报(工学版)》

文章信息/Info

Title:: Numerical Simulation on Enhancing Heat Transferin Spirally Fluted Tubes

作者:: 靳遵龙; 李赵; 董其伍; 等.; 郑州大学河南省过程传热与节能重点实验室,河南郑州,450002, 郑州大学河南省过程传热与节能重点实验室,河南郑州,450002, 郑州大学河南省过程传热与节能重点实验室,河南郑州,450002, 郑州大学河南省过程传热与节能重点实验室,河南郑州,450002

Author(s):: JIN Zun-long; LI Zhao; DONG Qi-wu; LIU Min-shan; Key Laboratory of Process Heat ’Transfer and Energy Saving of Henan Province,Zhengzhou University , Zhengzhou 450002,Chi-na

Keywords:: spirally fluted tube; periodical section; numerical simulation; resistance performance; heattransfer enhancement

摘要:: 基于周期段模型,对不同结构参数的螺旋槽管管内流动和换热进行了三维数值模拟,得到了管内流体湍流流动的速度场和温度场的细观分布.结果表明,随着槽深增大,螺旋槽管换热性能增强的同时阻力系数也相应增大；随着螺距增大,其换热性能减弱且阻力系数明显减小.最后,结合模拟结果数据,拟合出了努赛尔数Nu和阻力系数f的相应关联式.

Abstract:: Based on the periodical section models , the three-dimensional numerical simulation on inside flowand heat transfer of different structural parameters of the spiral groove tube were investigated and we obtain mi-cro-distribution of the flow velocity field and temperature field in the state of turbulence.The simulation resultsshow that with the increase of groove depth，both the heat transfer performance and resistance coefficient in-crease and with the increase of thread pitch， both the heat transfer performance and resistance coefficient de-crease.Finally,the correlation of resistance coefficient and Nusselt are presented from the simulation data.