基于CFD的盲三通流动与换热影响因素分析  

Numerical simulation and influencing factors of flow and heat transfer in blind tee based on CFD

作　　者：吴森林 王秋良 甘杜芬[3] 刘云[1] 李恩 王一帆 WU Senlin;WANG Qiuliang;GAN Dufen;LIU Yun;LI En;WANG Yifan(Petroleum Engineering College,Yangtze University,Wuhan 430100,China;Shenzhen Water Planning&Design Institute Co.,Ltd.,Shenzhen 518000,China;School of Computer Engineering,Guilin University of Electronic Science and Technology,Guilin 541000,China)

机构地区：[1]长江大学石油工程学院,湖北武汉430100 [2]深圳市水务规划设计院股份有限公司,广东深圳518000 [3]桂林电子科技大学计算机工程学院,广西桂林541000

出　　处：《中国测试》2023年第10期46-56,共11页China Measurement & Test

基　　金：国家自然科学基金项目(51665008);中国石油天然气集团公司气举实验基地多相流研究室开放基金资助项目(KF2021002)。

摘　　要：该文研究盲三通的流动与传热特性,利用Solidworks建立盲三通三维物理模型,运用CFD软件对盲三通流动与换热进行数值计算,探讨雷诺数、夹角、盲端长度以及支管直径对盲三通流动与换热的影响,并结合正交试验分析各影响因素的显著性强弱。努塞尔数Nu、压降Δp随着雷诺数Re、夹角θ的增大而增大,随着盲端长度L_(3)、支管直径d的增大而减小;阻力系数f随着雷诺数Re、盲端长度L_(3)、支管直径d的增大而减小,随着夹角θ的增大而增大。支管近右壁处流体流速增大,入口主管段区域温度梯度分布不明显;利用多元非线性拟合给出盲三通流动与换热准则关联式;各因素对阻力系数f的显著性强弱为:支管管径D>夹角B>雷诺数A>盲端长度C;对努塞尔数Nu和压降Δp的显著性强弱为:雷诺数A>支管管径D>夹角B>盲端长度C。盲三通压降的最优组合为A_(1)B_(5)C_(5)D_(5),阻力系数最优组合为A_(3)B_(1)C_(3)D_(5),努塞尔数最优组合为A_(5)B_(3)C_(2)D_(1)。研究结果可为盲三通设计与优化提供基础依据。Study the flow and heat transfer characteristics of blind tee.Solidworks was used to establish a three-dimensional physical model of blind tee,and CFD software was used to numerically calculate the flow and heat transfer of blind tee.The influence of the diameter of the branch pipe on the flow and heat transfer of the blind tee,and combined with the orthogonal test to analyze the significance of each influencing factor.The Nusselt number Nu and the pressure dropΔp increase with the increase of the Reynolds number Re and the included angleθ,and decreased with the increase of the blind end length L_(3) and the diameter d of the branch pipe;The drag coefficient f decreases with the increase of the Reynolds number Re,the blind end length L_(3) and the diameter d of the branch pipe,and increases with the increase of the included angleθ.The fluid velocity increases near the right wall of the branch pipe,and the temperature gradient distribution in the inlet main section is not obvious;The correlation formula of blind tee flow and heat transfer criterion is given by multivariate nonlinear fitting;the significance of each factor on the resistance coefficient was branch pipe diameter D>included angle B>Reynolds number A>blind end length C;The significance of Nusselt number Nu and pressure dropΔp was Reynolds number A>branch pipe diameter D>included angle B>blind end length C.The optimal combination of blind tee pressure drop was A_(1)B_(5)C_(5)D_(5),the optimal combination of drag coefficient was A_(3)B_(1)C_(3)D_(5),and the optimal combination of Nusselt number was A_(5)B_(3)C_(2)D_(1).The research results can provide a basis for the design and optimization of blind three-way links.

关 键 词：CFD 盲三通 流动与传热 影响因素 正交试验 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TB9[动力工程及工程热物理—热能工程]