空气加速器结构对熔喷气流场的影响  

Effect of Air Accelerator Structure on Airflow Field Under Meltblowing Die

作　　者：王玉栋 李彦青[1] 姬长春 张威[2,3] Yudong Wang;Yanqing Li;Changchun Ji;Wei Zhang(College of Biological and Chemical Engineering,Guangxi University of Science&Technology,Liuzhou 545006,China;College of Textiles and Garments,Hebei University of Science&Technology,Shijiazhuang 050018,China;Hebei Textile and Garment Technology Innovation Center,Shijiazhuang 050018,China;Department of Energy Chemistry and Materials Engineering,Shanxi Institute of Energy,Jinzhong 030600,China)

机构地区：[1]广西科技大学生物与化学工程学院,广西柳州545006 [2]河北科技大学纺织服装学院,河北石家庄050018 [3]河北省纺织服装技术创新中心,河北石家庄050018 [4]山西能源学院能源化学与材料工程系,山西晋中030600

出　　处：《高分子材料科学与工程》2022年第12期78-84,共7页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(52263002);广西科技基地和人才专项(桂科AD22080009);广西科技大学博士基金(21Z47);河北省重点研发计划(20271202D)。

摘　　要：为降低熔喷纤维的直径,设计了带有空气加速器的新型模头,考察了空气加速器结构对其下方流场的影响。借助Fluent软件对新型模头的气流场进行了数值计算,分析了流场中空气速度和空气温度的分布规律。研究结果表明,空气加速器结构对流场性能有很大的影响。当空气加速器间距减小、空气加速器高度增加、空气加速器倾角减小、空气加速器侧面为内圆弧状时,纺丝线上的空气速度峰值增大、空气温度提高。综合对比,在空气加速器半间距为10mm、空气加速器高度为30 mm、空气加速器倾角为60°、空气加速器侧面为内圆弧状的条件下,新型模头下方流场中的气流速度极值最大、气流温度更高。In order to reduce the diameter of meltblowing fibers,a new type of die head with an air accelerator was designed,and the influence of the structure of the air accelerator on the flow field below it was investigated.With the aid of Fluent software,the air flow field of the new die head was numerically calculated,and the air velocity and air temperature distribution law in the flow field were analyzed.The research results show that the structure of the air accelerator has a great effect on the performance of the flow field.When the distance between two air accelerators diminishes,the air accelerator height increases,the air accelerator inclination reduces,and the side of the air accelerator becomes an inner arc,the peak air velocity and air temperature on the spinning line rise.By comprehensive comparison,under the conditions that the air accelerator half-spacing is 10 mm,the air accelerator height is 30 mm,the air accelerator inclination is 60°,and the side of the air accelerator is inner circular arc,the extreme value of air velocity and air temperature in the flow field under the new die are the largest.

关 键 词：熔喷模头 空气加速器 数值计算 气流牵伸 

分 类 号：TS174.1[轻工技术与工程—纺织材料与纺织品设计]