改进转杯纺输纤通道气流场及其纤维伸直形态的模拟  

Simulation of flow field and fiber straightening in reconstructed fiber transport channel in rotor spinning

作　　者：张定眺 王倩茹 邱芳 李凤艳[1,2] 无 ZHANG Dingtiao;WANG Qianru;QIU Fang;LI Fengyan(School of Textile Science and Engineering,Tiangong University,Tianjin 300387,China;United Testing Services(Jiangsu)Co.,Ltd.,Suzhou,Jiangsu 215228,China;Zhejing Haoyu Technology Co.,Ltd.,Shaoxing,Zhejiang 312369,China)

机构地区：[1]天津工业大学纺织科学与工程学院,天津300387 [2]江苏中纺联检验技术服务有限公司,江苏苏州215228 [3]浙江灏宇科技有限公司,浙江绍兴312369

出　　处：《纺织学报》2025年第2期100-105,共6页Journal of Textile Research

基　　金：国家自然科学基金项目(51403152)。

摘　　要：为研究输纤通道对弯钩纤维伸直效果的影响,采用流体力学数值模拟方法模拟了改进前后输纤通道内气流场的分布状态,并借助离散元软件建立了柔性纤维模型,利用两相流耦合方法求解弯钩纤维在气流场中的伸直变化过程,讨论了弯钩纤维的伸直效果。结果表明:改进输纤通道内的高速气流区域相对原输纤通道占比较大,对弯钩纤维的加速伸直效果更好;弯钩纤维在改进输纤通道中能更早到达通道出口,且伸直效果优于原输纤通道。改进输纤通道对后弯钩纤维的伸直效果提升更加明显。该研究通过数值模拟的方法分析了弯钩纤维伸直过程,为转杯纺输纤通道等关键部件的设计提供指导。Objective The geometry of the fiber transport channel in rotor spinning will change the distribution of the internal airflow field,and the airflow field greatly influences morphological changes in fiber movement.To study the influence of the fiber transport channel on the straightening effect of hooked fiber,the distribution state of the airflow field in the channel before and after reconstruction was simulated by using the fluid mechanics numerical simulation method.Method A Laval tube fiber transport channel model was designed using SolidWorks software,and airflow motion state inside the reconstructed channel was simulated by Fluent,and the flexible hooked fiber model was established by EDEM.Based on the airflow field data obtained from Fluent simulation calculation,combined with the solid-liquid two-phase flow coupling method in EDEM,the shape change of hooked fibers in the airflow of the fiber transport channel was simulated to study the effect of different types of hooks on the straightening process of hooked fibers.Results The maximum air velocity difference between the reconstructed fiber transport channel and the original is 6.63%,but high-speed airflow in the reconstructed fiber channel is relatively large,especially the area of high-speed airflow L 3 section near the outlet is obviously larger than the original fiber channel outlet.When improving the movement of fibers in the fiber transport channel,the hooked fiber reached the high-speed airflow area earlier and the speed of the fiber head was increased,beneficial to the straightening of the hooked fiber.The hooked fiber in the reconstructed fiber channel was basically straight,while the fiber in the original fiber channel was not straight even when fiber reached the exit.According to the result of the straightness,the airflow field distribution in the reconstructed fiber transport channel was more conducive to the straightening of the hooked fiber.In comparison with the tradiational fiber transport channel,straightness of trailing right hooked fibers�

关 键 词：转杯纺 输纤通道 弯钩纤维 纤维伸直度 数值模拟 

分 类 号：TS103.2[轻工技术与工程—纺织工程]