棉纺织技术2024，Vol.52Issue(1)：37-44,8.
抽吸孔排列对喷气涡流纺喷嘴流场影响的数值模拟
Numerical simulation of the effect of air suction hole arrangement on the flow field of vortex spinning nozzle
摘要
Abstract
In order to investigate the effects of air suction hole arrangement parameters on the process and quality of negative-pressured suction type vortex core-spun yarn formation,a computational fluid dynamics model was established to study the effects of number of columns and axial spacing of suction holes on the airflow characteristics based on numerical simulation.Results was compared and analyzed with those from the spinning experiment.The results showed that the amount of wasted fibers in the spinning process was significantly affected by the axial and radial velocities of the airflow at the inlet plane of the yarn passage of the spindle.The wasted fiber amount was decreased as the increase of the axial and radial velocities of the airflow.The yarn breaking strength was highly dependent on the radial velocity of the airflow through the suction holes in the inlet region of the spindle.Yarn breaking strength was improved as the increase of radial velocity.The wasted fibers were fewer when there were 3 and 4 columns of suction holes than the case with 2 columns,while the yarn breaking strength was the highest when the number of columns was 2.When the axial spacing of suction holes was increased from 1 mm to 2 mm,both the amount of wasted fibers and yarn breaking strength were significantly increased.The numerical simulation results of the influence of suction hole arrangement parameters on wasted fibers during core spun yarn spinning and yarn breaking strength were consistent with previous spinning experiment.A feasible method to reveal the mechanism for the effects of parameters on the vortex yarn formation process and quality was provided.关键词
抽吸孔/喷气涡流纺/负压/落纤/断裂强度/数值模拟Key words
air suction hole/vortex spinning/negative pressure/wasted fiber/breaking strength/numerical simulation分类
轻工业引用本文复制引用
裴泽光,朱江阳,奚传智,王泳智..抽吸孔排列对喷气涡流纺喷嘴流场影响的数值模拟[J].棉纺织技术,2024,52(1):37-44,8.基金项目
国家自然科学基金项目(11972116) （11972116）
上海市自然科学基金项目(23ZR1401600) （23ZR1401600）
中央高校基本科研业务费专项资金资助项目(2232023Y-01) （2232023Y-01）
上海市现代纺织前沿科学研究基地资助项目(X11012201-011) （X11012201-011）
