JOURNAL OF TEXTILE RESEARCH ›› 2018, Vol. 39 ›› Issue (02): 55-61.doi: 10.13475/j.fzxb.20171001707

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Simulation on fiber motion in airflow field of transfer channel

  

  • Received:2017-10-09 Revised:2017-11-13 Online:2018-02-15 Published:2018-02-11

Abstract:

In order to the fiber configuration in the airflow of the rotor spinning channel, especially the transfer channel, which has a great influence on the rotor spun yarn properties. The airflow characteristics in the rotor spinning channel were obtained by numerical simulation, then the fiber dynamical equations were developed. The motion of straight and leading hooked fibers in the transfer channel were discussed. The simulation results shwo that vortices exist at the transfer channel inlet, and the distribution of the air velocity in the transfer channel cross section is uneven, and the air velocity in the transfer channel center is higher than that near the wall, however, the air velocity is increasing from the transfer channel inlet to the outlet. The fiber tends to move along the transfer channel center which has higher air velocity. The accelerating air helps the straight fiber to maintain its form and straighten the hooked fiber. The time to straighten the hook increases with the increasing of the bending degree, while increasing the air velocity in the transfer channel is conducive to decrease the time.

Key words: fiber motion, hook, transfer channel, numerical simulation

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