Journal of Textile Research ›› 2019, Vol. 40 ›› Issue (05): 131-135.doi: 10.13475/j.fzxb.20180403505

• Machinery & Accessories • Previous Articles     Next Articles

Three-dimensional numerical simulation of fiber movement in nozzle of murata vortex spinning

GUO Zhen1,2, LI Xinrong1,2(), BU Zhaoning1,2, YUAN Longchao1,2   

  1. 1. School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
    2. Key Laboratory of Modern Mechanical and Electrical Equipment Technology, Tianjin 300387, China
  • Received:2018-04-16 Revised:2019-01-24 Online:2019-05-15 Published:2019-05-21
  • Contact: LI Xinrong E-mail:lixinrong7507@hotmail.com

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Abstract:

The simplification of the fiber model or establishment of a two-dimensional model to simulate the movement of fibers in the flow field of murata vortex spinning nozzle could not describe the deformation of fibers in three-dimensional space. In order to solve this problem, a three-dimensional model of fibers was established, and the properties of fibers were reasonably set to make the model more accurate. Combining with arbitrary Lagrangian-Eulerian method, the motion of fiber in the flow field inside the jet vortex spinning nozzle was solved under the condition of fluid-structure interaction, and the movement and deformation of the fiber in the flow field were obtained. The results shown that the negative pressure in the twisting chamber causes the air flow at the nozzle inlet. The movement of the fiber tail in the gas stream is quite complex, first under the influence of turbulence, small fluctuations occur. Then, as time advances, the vibration frequency and vibration amplitude both increase first and then decrease. Under the influence of the flow field, the fiber tail is peeled off from the yarn and spirals forward to form the wrapping fiber.

Key words: murata vortex spinning, three-dimensional model, fluid-structure interaction, numerical simulation

CLC Number: 

  • TS103

Fig.1

Finite element fiber model.(a) Fiber model; (b) 8-Node 6 Face element"

Fig.2

Calculation area"

Fig.3

Mesh generation of fluid solid coupling model"

Tab.1

Fiber parameters"

密度/(kg·m-3) 弹性模量/Pa 泊松比 直径/μm 长度/mm
1.54×103 8×109 0 20 12

Fig.4

Fiber movement over time"

Fig.5

Estabishment of coordinate system"

Fig.6

Fiber end trails"

Fig.7

Fiber tail movement"

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