转杯纺纱通道内气体三维流动的数值分析

为了研究转杯纺成纱机理，需要对纺纱通道内气体流场加以分析，本文应用FLUENT流体计算软件对纺纱通道内气体流场进行了模拟研究。模拟结果揭示了纺纱通道内的气流特征：转杯内部存在负压，在纤维输送管道出口处负压值最小；纤维输送管道出口处的凝聚槽受到较大压力，致使转杯受力不平衡；气流在纤维输送管出口处流速最大，进入转杯后形成涡流，且沿转杯转向气流速度逐渐减小；气流随转杯转向流过大约90°时，开始流向转杯口，并且有产生回流趋势；滑移面角度大于27°后，流场特征发生明显消极变化，α≥27°的滑移面设计不宜采用。

Numerical analysis of 3-D air flow in rotor spinning channel

To further learn the mechanism of yarn formation of rotor spinning,the air flow field in spinning channel should be analyzed.The air flow field in spinning channel was studied by FLUENT software,and the simulation results reveal the airflow characteristics in rotor spinning channel as: there is negative pressure in the rotor and the value existed in the exit of fiber pipeline is minimum;great pressure is focused on the accumulation groove near the exit of fiber pipeline,causing the unbalanced force on the rotor;the airflow speed in the exit of fiber pipeline is higher than others,and after entering rotor the vortex is produced and the speed decreases gradually along the rotor;the airflow along the rotor flows towards the exit of rotor after about 90° rotation and the trend of backflow is generalized;and when the degree of the slip plane is larger than 27°,the airflow characteristic alters negatively,which proves that the degree of the slip plane should not be designed to be over or equal to 27°.