喷气织机延伸喷嘴内气流场特性分析
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摘要
为提高喷气织机引纬性能,采用数值模拟分析方法,利用Fluent软件研究了延伸喷嘴的不同结构及参数对其导纱管内气流速度、气流场稳定性的影响,并对延伸喷嘴结构及其参数进行优化。结果表明:延伸喷嘴最后一个辅喷嘴出口与其纬纱入口的最佳距离应在60 mm左右,距离太大或者太小都会导致导纱管内轴向气流速度减小;延伸喷嘴进气口与纬纱入口最佳距离应在30 mm左右,距离太小会使导纱管内气流场不稳定,距离太大会使导纱管内速度提升不明显;当延伸喷嘴喷射角度在10°左右时,气流速度径向分布的标准偏差最小,导纱管内气流场较为稳定。
In order to improve weft insertion performance of air-jet loom,the structure and parameters of extended nozzle were optimized. The influence of different structures and parameters of the extended nozzle on the airflow velocity and stability of the airflow field in the guide tube of the extended nozzle was studied by means of numerical simulation analysis and Fluent software. The results show that the optimum distance between the last auxiliary nozzle outlet and the weft inlet of the extended nozzle is about 60 mm,too large or too small distance will lead to the decrease of the axial airflow velocity in the guide tube,and the optimum distance between the extended nozzle inlet and the weft inlet is about 30 mm,too small distance will cause the airflow field in the guide tube unstable,and too large distance will cause the speed increase in the guide tube not obviously. When the spray angle of the extended nozzle is about 10°,the air flow field in the guide tube is relatively stable.
In order to improve weft insertion performance of air-jet loom,the structure and parameters of extended nozzle were optimized. The influence of different structures and parameters of the extended nozzle on the airflow velocity and stability of the airflow field in the guide tube of the extended nozzle was studied by means of numerical simulation analysis and Fluent software. The results show that the optimum distance between the last auxiliary nozzle outlet and the weft inlet of the extended nozzle is about 60 mm,too large or too small distance will lead to the decrease of the axial airflow velocity in the guide tube,and the optimum distance between the extended nozzle inlet and the weft inlet is about 30 mm,too small distance will cause the airflow field in the guide tube unstable,and too large distance will cause the speed increase in the guide tube not obviously. When the spray angle of the extended nozzle is about 10°,the air flow field in the guide tube is relatively stable.
引文
[1] VIKTOROV V,BELFORTE G,MATTIAZZO G,et al.Numerical model of an air-jet loom main nozzle for drag forces evaluation[J]. Textile Research Journal,2009,79(18):1664-1669.
[2] JIN H K,SETOGUCHI T,KIM H D. Numerical study of sub-nozzle flows for the weft transmission in an air jet loom[J]. Procedia Engineering,2015,105:264-269.
[3] JIANG Shunwei, JIN Yuzhen. Characteristics of intersecting airflows in the narrow flow channel[J]. The Journal of the Textile Institute,2018,109(4):517-523.
[4] SONG S J,SHEN D F. Synthetic flow-field analysis of main and auxiliary nozzles in air-jet looms[J].Advanced Materials Research,2011,411:16-20.
[5] SZABLorant,SZABLaszlo. Weft insertion through open profile reed in air jet looms[J]. Electronic Journal of Environmental Sciences,2013(2):16-20.
[6] JIN Yuzhen, HU Xiaodong. Study on airflow characteristics in the semi-closed irregular narrow flow channel[J]. Journal of Thermal Science,2016,25(2):123-129.
[7] ADANUR S,MOHAMED M H. Analysis of air flow in air-jet filling insertion[J]. Textile Research Journal,1991,61(5):253-258.
[8]祝章琛,黄福荣,周纪勇,等.喷气织机引纬筘槽内气流状态的测试分析[J].纺织学报,2010,31(6):120-124.ZHU Zhangchen,HUANG Furong,ZHOU Jiyong,et al.Test and analysis on airflow state in reed groove of air jet looms[J]. Journal of Textile Research,2010,31(6):120-124.
[9] WEI M Y,XUE W L,LU W M,et al. Air velocityuctuation in reed groove of air-jet loom[J]. Journal of Donghua University(English Edition), 2011(28):170-176.
[10]张道生,麻伟巍.激光测速对喷气引纬流场的测试分析[J].中国纺织大学学报,1994,20(2):52-61.ZHANG Daosheng, MA Weiwei. Analysis of laser velocimetry of weft insertion flow test[J]. Journal of China Textile University,1994,20(2):52-61.
[2] JIN H K,SETOGUCHI T,KIM H D. Numerical study of sub-nozzle flows for the weft transmission in an air jet loom[J]. Procedia Engineering,2015,105:264-269.
[3] JIANG Shunwei, JIN Yuzhen. Characteristics of intersecting airflows in the narrow flow channel[J]. The Journal of the Textile Institute,2018,109(4):517-523.
[4] SONG S J,SHEN D F. Synthetic flow-field analysis of main and auxiliary nozzles in air-jet looms[J].Advanced Materials Research,2011,411:16-20.
[5] SZABLorant,SZABLaszlo. Weft insertion through open profile reed in air jet looms[J]. Electronic Journal of Environmental Sciences,2013(2):16-20.
[6] JIN Yuzhen, HU Xiaodong. Study on airflow characteristics in the semi-closed irregular narrow flow channel[J]. Journal of Thermal Science,2016,25(2):123-129.
[7] ADANUR S,MOHAMED M H. Analysis of air flow in air-jet filling insertion[J]. Textile Research Journal,1991,61(5):253-258.
[8]祝章琛,黄福荣,周纪勇,等.喷气织机引纬筘槽内气流状态的测试分析[J].纺织学报,2010,31(6):120-124.ZHU Zhangchen,HUANG Furong,ZHOU Jiyong,et al.Test and analysis on airflow state in reed groove of air jet looms[J]. Journal of Textile Research,2010,31(6):120-124.
[9] WEI M Y,XUE W L,LU W M,et al. Air velocityuctuation in reed groove of air-jet loom[J]. Journal of Donghua University(English Edition), 2011(28):170-176.
[10]张道生,麻伟巍.激光测速对喷气引纬流场的测试分析[J].中国纺织大学学报,1994,20(2):52-61.ZHANG Daosheng, MA Weiwei. Analysis of laser velocimetry of weft insertion flow test[J]. Journal of China Textile University,1994,20(2):52-61.