JOURNAL OF TEXTILE RESEARCH ›› 2017, Vol. 38 ›› Issue (12): 135-140.doi: 10.13475/j.fzxb.20170301806

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influence of hollow spindler structure parameters on flow field of air jet vortex spinning

  

  • Received:2017-03-09 Revised:2017-09-22 Online:2017-12-15 Published:2017-12-18

Abstract:

In order to study the influence of the inclined hole structure on hollow spindle on the properties of vortex spinning yarn, the 3-D model of twisting chamber was established by using CAD software-Solidworks and the computational fluid dynamics model was built by FLUENT15 software; the experiment simulated the flow field, studied the flow characteristic and obtained the distribution of pressure field and velocity field. Simulation results show that air is ejected from the jet orifice and pushed in a spiral manner, static pressure distributions in twisting chamber take on the U shape along nozzle radius; the negative pressure near the entrance of the hollow spindle is propitious to fibers being sucked into hollow spindle; the inclined hole on the outer surface of the hollow spindle is beneficial to increase the output of fibers’ axial velocity and effectively slow down the trend of axial velocity reduction; the angle of inclined hole will affect the axial velocity of fibers when they enter the twisting chamber, as the angle of inclined hole increases, the axial velocity increases first and then decreases; and the inclined hole can improve fibers’ twisting effect and ameliorate yarn properties.

Key words: air jet vortex spinning, hollow spindle structure, twisting chamber, mumerical simulation, flow field

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[2] . Comparative analysis of conventional and self twist jet vortex spinning [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(01): 25-31.
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[5] . Numerical simulation for 3−D flow field of rotor spinning channel [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(09): 145-150.
[6] . Influence of auxiliary nozzle and profiled reed in air-jet loom on flow field [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(09): 129-133.
[7] . Influence of folding jet orifice position on air flow characteristics in pure pneumatic tucker [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(08): 125-131.
[8] . Influence of yarn formation process on properties of knitted fabrics made of air jet vortex-spun bamboo pulp colored yarns [J]. JOURNAL OF TEXTILE RESEARCH, 2015, 36(06): 30-0.
[9] . Influence of outer length on air flow field in melt blowing with dual slots [J]. JOURNAL OF TEXTILE RESEARCH, 2015, 36(04): 71-0.
[10] . Numerical simulation and experimental verification of weft insertion flow field of main nozzle in air-jet loom [J]. JOURNAL OF TEXTILE RESEARCH, 2014, 35(5): 126-0.
[11] . Influence of yarn formation process on properties of bamboo pulp fiber colored spun yarn using air jet vortex spinning [J]. JOURNAL OF TEXTILE RESEARCH, 2014, 35(2): 23-0.
[12] . Three dimensional flow field numerical simulation and analysis of compact spinning with perforated rollers [J]. JOURNAL OF TEXTILE RESEARCH, 2013, 34(4): 122-126.
[13] . Numerical study of two-dimensional air flow in the spinning cup of rotor spinning [J]. JOURNAL OF TEXTILE RESEARCH, 2013, 34(2): 51-54.
[14] TAN Bao-Hui, FENG Zhi-Hua, LIU Ding-Ding, TANG Yin-Ping. Flow field analysis of auxiliary nozzle of an air-jet loom based on CFD [J]. JOURNAL OF TEXTILE RESEARCH, 2012, 33(7): 123-128.
[15] fu hai-ming. Numerical simulation on the three dimensional flow field of Fiber filter media [J]. JOURNAL OF TEXTILE RESEARCH, 2011, 32(5): 16-21.
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