狭缝模头熔喷湍流气流的粒子图像测速（PIV）研究

Particle Image Velocimetry (PIV) Investigation of the Turbulent Airflow in Slot-Die Melt Blowing.

作者信息

Xie Sheng, Jiang Guojun, Ye Baolin, Shentu Baoqing

机构信息

College of Material and Textile Engineering, Jiaxing University, Jiaxing 314001, China.

State Key Lab of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310027, China.

出版信息

Polymers (Basel). 2020 Jan 31;12(2):279. doi: 10.3390/polym12020279.

DOI:10.3390/polym12020279

PMID:32023960

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7077474/

Abstract

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 (, , and ). 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.

摘要

为了探究狭缝模头熔喷中纤维抽打运动的形成机制，采用粒子图像测速（PIV）技术在线测量了狭缝模头熔喷中的湍流气流。PIV结果可视化了湍流气流的结构，并提供了空气速度分量（、和）的分布。此外，PIV结果还展示了湍流气流在连续时间瞬间的演变过程。通过将湍流气流的特性与纤维抽打路径进行比较，PIV结果为狭缝模头熔喷中特定的纤维抽打运动提供了初步解释。