Effect of structure of vortex tube on yarn quality in vortex spinning machine
In order to study the effect of the structure of vortex tube on the yarn performance in vortex spinning, 4 groups of vortex tube structure were designed, and the corresponding 3D computational fluid dynamics models were established to conduct the numerical simulation of the airflow in the nozzle.Through analysis of the characteristics of air flow inside the different nozzles, the motion of drafted fibers and performances of yarns were discussed.Simulation results show that when the structure of vortex tube has a transition region between the cylindrical and conical cavity (CCT) and the outlet of jet orifice is located at the junction of cylindrical and transition cavity, the airflow state within the nozzle has a large negative pressure with appropriate axial and tangential velocity, which is conducive to the formation of the open-ends of fibers and twisting, and the yarn quality is better.Spinning experiment results also prove that the yarn properties are superior.Thus, the analysis of numerical simulation can provide the reference for the future design of the vortex tube.
vortex tube nozzle vortex spinning yarn quality
Shanshan Shang Na Sun Chongwen Yu Meiling Li
Library, Shanghai University of Engineering Science, Songjiang District, Shanghai, 201620, China;Col College of Textiles, Donghua University, Shanghai, 201620, China
国际会议
上海
英文
112-116
2014-07-11（万方平台首次上网日期，不代表论文的发表时间）