摘要
为获得利于高速牵伸的熔喷喷头设计,使用数值模拟方法对多种几何结构熔喷喷头的气流流场进行了分析,重点探讨了导流板长度、导流板间距和导流板安装位置等导流板熔喷喷头的结构特征参数对熔喷气流流场的作用规律。结果表明:在一定范围内,降低气流入射角有助于提升气流速度,从而使气流对聚合物的握持和牵伸作用增强;适当增加导流板长度、减小导流板间距会有效增强气流集束作用,并减缓气流衰减速度;导流板安装位置对气流的最大速度有显著的影响,导流板间距离越小,气流最大速度越大。
In order to design a melt blowing die head with high-speed drafting properties,the airflow field of the melt blowing die head with various geometric structures was analyzed by using a numerical simulation method.Moreover,the effect of the structural parameters of the melt blowing die head,such as the deflector length,the deflector spacing and the installation position of the deflector,on the airflow field was emphatically evaluated.The results showed that,reducing the incidence angle of the airflow within a certain range could improve the airflow velocity,and enhance the holding and drafting effects.In addition,increasing the length of the deflector and reducing the deflector spacing could effectively enhance the airflow concentration and slow down the airflow attenuation speed.Furthermore,the installation position of the deflector had a significant impact on the maximum velocity of the airflow.The closer the distance between the two deflectors,the greater the maximum velocity of the airflow.
作者
甄琪
张恒
段书霞
王思凡
钱晓明
张一风
Zhen Qi;Zhang Heng;Duan Shuxia;Wang Sifan;Qian Xiaoming;Zhang Yifeng(School of Clothing College of Fashion Technology,Zhongyuan University of Technology,Zhengzhou 451191,China;Henan Key Laboratory of Medical and Protective Products,Xinxiang 453400,China;School College of Textiles,Zhongyuan University of Technology,Zhengzhou 451191,China;Yadu Holding Group Co.,Ltd.,Xinxiang 453400,China;School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China)
出处
《产业用纺织品》
2022年第9期45-50,共6页
Technical Textiles
基金
国家自然科学基金项目(52003306)
国家生物医用材料生产应用示范平台项目(TC190H3ZV/1)
河南省重大科技专项(221100310500)
河南省医用防护用品重点实验室项目(YD2021006)
中原工学院自主创新应用研究(K2020YY002)。
关键词
数值模拟
数值分析
熔喷气流
流场
喷头
导流板
速度
高速
numerical simulation
numerical analysis
melt-blown airflow
die head
deflector
velocity
high speed
