基于响应面法的辅助喷嘴喷孔结构优化设计  

Optimization design of nozzle orifice structure based onresponse surface method

作　　者：沈敏[1] 杨启 胡峰 王真 杨学正 吕永法 余联庆[1,2] SHEN Min;YANG Qi;HU Feng;WANG Zhen;YANG Xuezheng;L Yongfa;YU Lianqing(Three-dimensional Textile Hubei Engineering Research Center,Wuhan Textile University,Wuhan,Hubei 430200,China;School of Mechanical and Automation,Wuhan Textile University,Wuhan,Hubei 430200,China;Shandong Rifa Textile Machinery Co.,Ltd.,Liaocheng,Shandong 252001,China)

机构地区：[1]武汉纺织大学三维纺织湖北省工程研究中心,湖北武汉430200 [2]武汉纺织大学机械工程与自动化学院,湖北武汉430200 [3]日发纺织机械有限公司,山东聊城252001

出　　处：《纺织学报》2025年第3期196-206,共11页Journal of Textile Research

基　　金：国家自然科学基金项目(51505344,11872048);山东省重点研发项目(2024CXGC010215);湖北省高等学校优秀中青年科技创新团队项目(T2022015);湖北省数字化纺织装备重点实验室开放课题(2020001)。

摘　　要：为降低辅助喷嘴的耗气量,建立不同椭圆形孔出口的辅助喷嘴与异形筘组成的流场,采用Fluent数值模拟得到沿合成流场中心轴线的气流速度与辅助喷嘴入口质量流;基于合成气流速度与辅助喷嘴射流集束型分析,设置椭圆孔参数范围,依据Box-Behnken设计试验,得到耗气量定量表达式,结合响应面方法分析辅助喷嘴椭圆孔结构参数对耗气量的影响。结果表明:改变椭圆孔在出口平面的旋转角度,对合成气流沿轴线速度和辅助喷嘴射流的径向速度影响显著;椭圆孔短轴长度对耗气量的影响显著于长轴长度,旋转角度的改变对耗气量的影响较小;辅助喷嘴耗气量与合成流场中心轴线波峰速度呈现非线性关系,最优模型相对试验组平均数值,合成气流波峰速度提升了2.25%,耗气量降低了7.35%。Objective The air consumption of the auxiliary nozzle accounts for approximately 75%of the air-jet loom.In order to address the issues of low jet velocity and high air consumption in the single circular-hole auxiliary nozzle,a novel-shaped orifice auxiliary nozzle was designed.The study investigated the influence of the outlet shape parameters of the auxiliary nozzle on the synthesized airflow within the novel-shaped reed groove.This paper reports on numerical simulations based on the Reynolds-Averaged Navier-Stokes(RANS)equations and a turbulent model for vortex viscosity,focusing on the three-dimensional synthesized flow field composed of the main nozzle jet and the auxiliary nozzle jet.Method Firstly,three-dimensional synthesized flow field models for auxiliary nozzles A1,A2,A3,B1,B2 and B3 were established using Solidworks software.The synthetic flow field models were then grid-divided using specialized meshing software ICEM,and boundary condition parameters were set using computational fluid dynamics(CFD)software Fluent.Numerical simulations of the synthesized airflow were conducted based on the RANS equations,and the accuracy of the numerical results was validated through experiments.Secondly,building upon the analysis of experimental results,the range of outlet parameters for the auxiliary nozzles was defined,including the long axis,short axis,and rotation angle.Experimental combinations were generated using the Box-Behnken method,and calculations were performed using Fluent.Experimental results were presented as response surfaces,and regression equations were derived,with the accuracy of the regression equation verified through variance analysis.By analyzing the interactions between various factors,the impact of each factor on air consumption and speed was determined.In conclusion,a comparison of air consumption and average velocity among the experimental groups facilitated the identification of the optimal comprehensive performance model.Results The numerical simulation results exhibit a decay trend in t

关 键 词：喷气织机 辅助喷嘴 喷孔结构 响应曲面法 耗气量 

分 类 号：TS103.3[轻工技术与工程—纺织工程]