网格圈集聚纺纱系统三维流场表征与分析

Characterization and analysis of three-dimensional flow field in compact spinning with lattice apron

通过建立流体动力学模型,利用标准k-ε湍流模型及并行计算技术对网格圈集聚纺纱系统集聚区流场进行模拟与表征,分析集聚区域内气流的流动状况,解析吸气斜槽入口曲面上气流的静压分布及速度分布规律,并讨论速度分布对须条的作用效果。研究结果表明:网格圈集聚纺纱系统是利用负压效应来产生集聚气流;斜槽入口曲面上的负压使网格圈向异形管内凹;X、Y、Z轴向的速度分量对须条的作用效果各不相同;集聚区产生附加捻度的区域主要靠近吸气斜槽的S1端。

A computational fluid dynamic model was established and computerized with parattet tecnnologies ＆ standard k-ε turbulent model for simulating and characterizing the flow field in convergence zone of compact spinning with lattice apron. Flowing states of airflow in convergence zone were characterized such as the distribution rules of static pressure and velocity, and their effect on fiber bundle in inlet curved surface of suction slot were analyzed. The results show that the converging airflow is generated by negative pressure effects in compact spinning with lattice apron ; the negative pressure effects in inlet curved surface of suction slot sunken the lattice apron into special pipe; effect of component velocities （X axial velocity, Y axial velocity and Z axial velocity） on fiber bundle is different; additional twists are generated mainly in near S1 part of the suction slot.