气流纺转杯纺纱通道三维内流场数值模拟  

Numerical simulation of three-dimensional internal flow field in the spinning channel on rotor spinning unit

作　　者：邱海飞[1] QIU Haifei(School of Mechanical Engineering,Xijing University,Xi’an 710123,China)

机构地区：[1]西京学院机械工程学院,西安710123

出　　处：《丝绸》2021年第4期36-42,共7页Journal of Silk

基　　金：陕西省教育厅科研计划项目(15JK2177);西京学院高层次人才专项基金资助项目(XJ20B09);西京学院横向课题项目(2018610002001389)。

摘　　要：针对抽气式转杯纺纱通道内部复杂气流变化,文章以RNG k-ε湍流物理模型为支撑,构建基于ICEM CFD和FLUENT的非结构性单相稳态流体计算域。采用SIMPLE算法对纺纱通道内流场进行压力-速度耦合求解,计算得到进出口质量流量差Δm=0.0014 g/s,数值模拟满足残差收敛性条件。结果显示:转杯内腔压力场梯度明显,静、动压从杯体中心逐渐向凝聚槽边缘增大;输纤管道出口处存在湍流速度,滑移面和凝聚槽流域气流速度(342~428.68 m/s)相对较大;纺纱通道内部两路气流流线轨迹层界清晰、流向规律,流线特征符合压力场和速度场分析预期,为高速转杯流场特性及其纺纱机理研究提供了有力依据。In view of the complex airflow variation in spinning channel on air-extraction rotor,an unstructured fluid calculation domain with single phase and steady state was built by ICEM CFD and FLUENT software,based on RNG k-εturbulence physical model.The pressure-velocity coupling of the internal flow field in the spinning channel was solved through SIMPLE algorithm,and the mass flow difference between inlet and outletΔm=0.0014 g/s was obtained through calculation.The numerical simulation satisfied the convergence condition of residual.The results showed that there was an obvious pressure gradient in the rotor,and the static and dynamic pressure gradually increased from central area of the rotor to the edge of condensing groove.Besides,there was turbulence velocity at the outlet of fiber pipeline,and the air velocity(342~428.68 m/s)on the slip surface and flow area in the condensing groove was relatively high.The trajectory and boundary of two airflow lines in the spinning channel was clear and the flow direction was regular,the line characteristics conformed to the analysis expectation of the pressure field and velocity field.Our work strongly supports research on the flow field characteristics and spinning mechanism of high-speed rotor.

关 键 词：纺纱 转杯 湍流 残差 凝聚槽 输纤管道 FLUENT 

分 类 号：TS104.2[轻工技术与工程—纺织工程] TH113[轻工技术与工程—纺织科学与工程]