摘要
输棉通道的几何形状以及输棉通道与转杯的空间位置关系对通道和转杯内部气流流动有很大的影响,进而影响纤维在输棉通道内的伸直状态。本文通过数值计算的方法研究了输棉通道和转杯内部气流流动特征,并讨论了输棉通道特征数和空间位置角对通道和转杯内部气流流动特性及纤维伸直状态的影响。模拟结果表明,梳棉通道负压从出口到入口呈现先平稳增加,后急剧增加的趋势,特征数越大,该趋势越明显;输棉通道内部速度差随着特征数增大而增大;空间位置角α增加,输棉通道轴向负压先减小后增大,而输棉通道轴向速度差增大;空间位置角β对输棉通道静压和速度的分布影响较小,它主要改变纤维与转杯的初始接触位置。
The geometric parameters of the transfer channel and the spatial position of the rotor and the channel have a great influence on the air flow characteristics in the rotor spinning machine and hence affect the straightness of the fibers in the transfer channel. The method of numerical simulation is used to study the airflow in the transfer channel and the rotor, and the effects of the transfer channel characteristic number and the spatial position of the rotor and channel on the airflow and fiber straightness are investigated. The simulation results show that from the inlet to the outlet of the transfer channel, the negative pressure increases steadily first, and then increases dramatically, and this trend becomes more obvious with the increasing characteristic number. The velocity difference increases along with the increasing characteristic number. The negative pressure along the transfer channel diminishes first, and then enhances, while the velocity difference increases with the enlarging space angle α. The space angle β has a comparatively small effect on the pressure and the velocity distribution in the transfer channel; however, it mainly changes the initial contact position of the fibers and the rotor.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2015年第2期98-104,共7页
Journal of Textile Research
基金
教育部科学技术研究重点(重大)项目(113027A)
关键词
输棉通道
转杯纺
气流
数值模拟
transfer channel
rotor spinning
airflow
numerical simulation
作者简介
林惠婷（1989-），女，博士生。主要研究方向为转杯纺气流流动和纤维运动。
汪军，通信作者，E-mail：Junwang@dhu．edu．cn.
