T型三通管内表面活性剂溶液减阻性能研究  

Study on drag reduction performance of surfactant solution in T-tee tubes

作　　者：张浩[1,2] 赵智超 龚娇 张志 李政恒 焦文超 ZHANG Hao;ZHAO Zhichao;GONG Jiao;ZHANG Zhi;LI Zhengheng;JIAO Wenchao(School of Thermal Engineering,Shandong Jianzhu University,Jinan 250101,China;Shandong Collaborative Innovation Center of Green Building,Jinan 250101,China;Qingdao City Architect Consultant Co.,Ltd.,Qingdao 266000,China;The High School Affiliated to Jining University,Jining 272004,China)

机构地区：[1]山东建筑大学热能工程学院,山东济南250101 [2]山东省绿色建筑协同创新中心,山东济南250101 [3]青岛城市建筑设计院有限公司,山东青岛266000 [4]济宁学院附属中学,山东济宁272004

出　　处：《山东建筑大学学报》2025年第2期60-68,共9页Journal of Shandong Jianzhu University

基　　金：山东省专业学位研究生教学案例库项目(SDYAL20162);山东省研究生优质课程建设项目(SDYKC19117)。

摘　　要：在流体中添加表面活性剂可以减小流动阻力,降低流体输送能耗。采用数值模拟方法研究表面活性剂溶液黏弹性的减阻机理,通过自定义函数UDF编译器编写程序,确保Giesekus模型的可靠性,着重分析T型三通中湍流状态下,表面活性剂溶液与纯水的旋涡长度差异,并进一步探究二维状态下,回流区随流动参数变化的演变规律。结果表明:黏弹性减阻流体壁面处速度小、中心区速度大,而近壁面处有较小的速度梯度;涡旋结构轴向长度与径向宽度均小于纯水的;黏弹性溶液回流区变化随雷诺数增加划分为3个阶段,在第二阶段直管段出现回流区,而在第三阶段出现两个回流区;回流区长度随雷诺数的增大而增大,随维森伯格数的增大而减小,但当维森伯格数>4时,回流区长度基本不变。Adding surfactant to fluid can reduce flow resistance and lower energy consumption for fluid transportation.Numerical simulation is used to study the drag reduction mechanism of the viscoelasticity of surfactant solution,and the reliability of Giesekus model is ensured by UDF programming,which focuses on analyzing the difference between the vortex length of surfactant solution and pure water in turbulence state in T-tee;and the evolution law of reflux region with the change of flow parameters in two-dimensional state is analyzed emphatically.The results show that the viscoelastic fluid has a small velocity at the wall,a large velocity at the center,and a small velocity gradient near the wall.The axial length and radial width of the vortex structure are smaller than that of pure water.With the increase of Reynolds number,the change of reflux zone of viscoelastic solution is divided into three stages.In the second stage,the return zone appears in the straight pipe section,and in the third stage,two return zones appear.The length of the reflux region increases with the increase of Reynolds number and decreases with the increase of Weissenberg number,but when the Weissenberg number is greater than 4,the length of the reflux region is basically unchanged.

关 键 词：T型分流三通 表面活性剂 Giesekus模型 回流区 

分 类 号：TV134[水利工程—水力学及河流动力学]