装有气流导向装置的网格圈式集聚纺数值模拟与实验验证  

Numerical simulation and experimental investigation of lattice-apron compact spinning with airflow-guiding device

作　　者：宋凯莉 郭明瑞[1] 高卫东[1] SONG Kaili;GUO Mingrui;GAO Weidong(Key Laboratory of Eco-Textiles(Jiangnan University),Ministry of Education,Wuxi,Jiangsu 214122,China)

机构地区：[1]生态纺织教育部重点实验室(江南大学),江苏无锡214122

出　　处：《纺织学报》2025年第1期34-41,共8页Journal of Textile Research

基　　金：国家自然科学基金项目(52003105);江苏省研究生科研与实践创新计划项目(KYCX24_2565)。

摘　　要：为优化集聚纺集聚区的气流状态,通过在集聚区安装一个气流导向装置来改变流场分布,以增强气流作用效果。为提高研究效率,量化分析流场参数,借助ANSYS Fluent软件对集聚区流场进行数值模拟。将网格圈加入数值模拟模型,优化了仿真参数,得到更准确的集聚区气流分布规律。通过对比气流在集聚区的集聚有效面积,探索负压大小和气流导向装置对集聚区平行于罗拉轴向的气流速度分量的影响,并对结果进行纺纱实验验证。结果表明:负压的增大和气流导向装置均可增大集聚区的集聚有效面积,面积增大幅度分别为34.49%和62.16%;纱线性能方面,线密度越大,气流导向装置的提升效果越好,纺制29.2 tex棉纱时,与无导向装置相比,毛羽(≥3 mm)减少了28.9%,断裂强度提升了7.62%。Objective In order to optimize the airflow state in the converging zone of the compact spinning system,improve the utilization rate of negative pressure,and reduce the energy consumption of production,this research aims to modify the flow field distribution by installing an airflow-guiding device in the converging zone to enhance the effect of airflow.Through numerical simulations and spinning experiments,the performance of the airflow-guiding device was explored under various yarn densities to assess its enhancement of yarn properties.Method A three-dimensional(3-D)geometrical model of the converging zone was developed,and numerical simulations of the flow field were performed using ANSYS Fluent software.A lattice-apron was innovatively added to the model to obtain a more accurate airflow distribution pattern in the converging zone.At the end of the simulation,the effective airflow area in the converging zone was compared,and the influence of negative pressure and the airflow-guiding device on airflow distribution in the converging zone was analyzed.Finally,spinning experiments were conducted to verify the accuracy of the numerical simulation.Results A comparison of the enhancement of the effective convergence area by increasing negative pressure and installing the airflow-guiding device showed that the enhancement achieved by installing the airflow-guiding device was significantly more remarkable than that achieved by increasing negative pressure.Numerical simulations demonstrated that the airflow-guiding device was efficient and energy-saving,improving the airflow field in the converging zone without increasing production energy consumption thus enabling better fiber convergence.The number of hairiness(≥3 mm)was reduced across all yarn densities after the installation of the airflow-guiding device.For the yarn linear densities(14.6,19.4,and 29.2 tex),the greater was the yarn linear density,the more effective was the hairiness reduction.In particular,the hairiness for the three yarns was reduced by 2.88%,22.7

关 键 词：集聚纺 数值模拟 气流导向装置 气流分析 纱线质量 

分 类 号：TS104.7[轻工技术与工程—纺织工程]