纺织学报 ›› 2012, Vol. 33 ›› Issue (6): 20-25.

• 纺织工程 • 上一篇    下一篇

不同横截面形状丝道网络器中三维流场特征

 邱华, 刘园园, 严静, 刘立群, 葛明桥   

  1. 生态纺织教育部重点实验室(江南大学)
  • 收稿日期:2011-06-18 修回日期:2012-02-02 出版日期:2012-06-15 发布日期:2012-06-04
  • 通讯作者: 邱华 E-mail:qiuhua@jiangnan.edu.cn
  • 基金资助:

    生态纺织教育部重点实验室(江南大学)项目

Three dimensional flow patterns in yarn duct of interlacers with various cross-sectional shapes

 QIU  Hua, LIU  Yuan-Yuan, YAN  Jing, LIU  Li-Qun, GE  Ming-Qiao   

  1. Key Laboratory of Eco-Textiles(Jiangnan University), Ministry of Education
  • Received:2011-06-18 Revised:2012-02-02 Online:2012-06-15 Published:2012-06-04
  • Contact: Hua QIU E-mail:qiuhua@jiangnan.edu.cn

摘要: 本研究计算了七个不同横截面形的网络器丝道内压缩气流的特征,并将这些特征和网络器的性能联系起来,为设计出性能优良的网络器提供理论依据。流场计算用的是商业计算流体力学软件ANSYS CFX。网络器的性能通过网络丝的网络度和网络牢度评价。通过流场计算可以得出:包含喷嘴轴线的丝道横截面上的涡流可以为长丝的旋转提供较大的空间;丝道轴线上,较大的流体速度有利于长丝的开松。但是,太大的流体速度会使长丝粘贴在丝道壁上,阻碍了长丝的相互纠缠,降低了网络丝的网络度。

关键词: 网络器 , 横截面 , 丝道 , 计算流体力学

Abstract: The aim of present work is to determine the flow characteristics of compressible airflow in the yarn duct of interlacer by numerical simulations to make the effects of cross-sectional shapes of yarn duct on the performance of interlacers. CFD (Computational Fluid Dynamics) software package ANSYS CFX is used to calculate flow patterns in yarn duct. Relations between the performance of the interlacer and distribution of velocity vector, airflow speed and particle trace of flow were clarified to propose the knowledge of design better interlacers. From the results of calculation, if vortices on the middle cross-section of the yarn duct make filaments revolve continuously, large number of tangles can be achieved. The velocity at the central point of the yarn duct decides the sufficiently opening of the filaments. However, too higher velocity makes filaments stay on the wall, hindering them from tangling with each other.

Key words: interlacer , cross-section , yarn duct , CFD

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