Particle Image Velocimetry (PIV) Investigation of the Turbulent Airflow in Slot-Die Melt Blowing
Particle Image Velocimetry (PIV) Investigation of the Turbulent Airflow in Slot-Die Melt Blowing
复制标题
狭缝模头熔喷中湍流气流的粒子图像测速 (PIV) 研究
DOI：
10.3390/polym12020279
复制
发表时间：
2020-02-01
期刊：
影响因子：
5
通讯作者：
Shentu, Baoqing
中科院分区：
文献类型：
--
作者：
Xie, Sheng;Jiang, Guojun;Shentu, Baoqing
为了探讨狭缝模熔喷中纤维搅打运动的形成机理，采用粒子图像测速技术（PIV）对狭缝模熔喷中的湍流气流进行了在线测量。PIV结果可视化的湍流气流的结构，并提供了空气速度分量（vx，vy和vz）的分布。同时，PIV结果还显示了连续时刻湍流气流的演变过程。通过比较湍流气流与纤维搅打路径的特征，PIV结果为狭缝模熔喷中纤维的特殊搅打运动提供了初步的解释。
In order to explore the forming mechanism of the fiber whipping motion in slot-die melt blowing, the turbulent airflow in slot-die melt blowing was measured online with the approach of the Particle Image Velocimetry (PIV) technique. The PIV results visualized the structure of the turbulent airflow and provided the distributions of air velocity components (vx, vy, and vz). Moreover, the PIV results also demonstrated the evolutive process of turbulent airflow at successive time instants. By comparing the characteristics of the turbulent airflow with the fiber whipping path, the PIV results provide a preliminary explanation for the specific fiber whipping motion in slot-die melt blowing.