文献类型：期刊文献

英文题名：Numerical simulation of flow field in the twisting chamber of Murata vortex spinning based on the hollow spindle with different structures

作者：Yan, Linlin[1,2];Zou, Zhuanyong[1];Cheng, Longdi[2];Wei, Guo[3];Tang, Peijun[3]

机构：[1]Shaoxing Univ, Key Lab Clean Dyeing & Finishing Technol Zhejiang, Shaoxing, Peoples R China;[2]Donghua Univ, Minist Educ, Key Lab Text Sci & Technol, Shanghai, Peoples R China;[3]BROS Oriental Co Ltd, Ningbo, Zhejiang, Peoples R China

年份：2019

卷号：89

期号：4

起止页码：645

外文期刊名：TEXTILE RESEARCH JOURNAL

收录：SCI-EXPANDED(收录号：WOS:000456746700017)、、EI(收录号：20181505002228)、Scopus(收录号：2-s2.0-85045086865)、WOS

基金：The authors disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This research was supported by the National Natural Science Foundation of China (Grant Number 51573095).

语种：英文

外文关键词：hollow spindle; Murata vortex spinning; numerical simulation; principle of yarn formation; spiral guide groove

外文摘要：The novel hollow spindle with spiral guide grooves is introduced into the manufacture of Murata vortex spun yarn for the sake of enhancing the vortex yarn's strength. By means of numerical simulation, the airflow characteristics in the conventional twisting chamber and novel twisting chamber of Murata vortex spinning are obtained and compared in order to explain yarn formation for adoption of the novel hollow spindle. The airflow distribution near the spiral guide grooves is analyzed, and the influence of airflow changes caused by the groove structure on the movement of the free end fibers and the yarn strength is analyzed. The results show that the spiral guide grooves will influence the pressure and velocity distribution in the twisting chamber, especially near the areas of the guide grooves. The guide grooves can guide the swirling airflow moving down the conical cavity of the twisting chamber, resulting in increases of the tangential, axial, and radial velocities of airflow in the conical cavity. And it is expected to produce fiber migration in the yarn cross-section and the self-twist effect of wrapped fibers. These phenomena will strengthen the wrapping and twisting effect of the free end fibers and inter-fiber cohesive force of vortex spun yarn in the process of yarn formation, and finally improve the strength of vortex spun yarn due to adopting the novel hollow spindle.