摘要
为解决JWF-A型并条机吸风系统在生产中存在的问题,采用数值仿真方法分析影响该吸风系统的气流流场、压力场分布和各个吸风口流量大小的因素,并从吸风系统结构参数入手,提出4种改进方案,研究补风口位置与尺寸、风道结构、吸风口开度等对吸风系统流场、压力场和风量大小的影响。仿真计算应用非结构化网格和有限体积法进行计算区域和控制方程的离散,采用标准k-ε模型封闭湍流控制方程。计算结果与实测结果表明:该吸风系统吸风量不足;吸风管道结构不变,补风口位置与尺寸、吸风口开度的变化对系统性能改进作用不大;提出的风道改进方案的吸风量相对于原方案有较大提高,吸风量可以满足要求。
To solve the existing problems of the suction system of the JWF-A drawing frame during production,numerical simulation method was used to analyze the influence of air flow field,pressure field distribution,and the input air of each inlet on the suction system.Four improving schemes were considered based on the configuration parameters of the suction system,to investigate the influence of the position and size of secondary air inlet,wind pipe arrangement and inlet jaw opening on the flow field,pressure field and air rate.Unstructured grid and finite volume method were applied for region and governing equation discreteness,and standardk-εmodel was used as turbulent model.The results of calculation and measurement showed that the air rate of the suction system is not enough.When the structure of air inlet pipe remains fixed,modifications of position and size of secondary air inlet and inlet jaw opening have little effect on the improvement of its performance;the scheme here suggested for improving wind pipe arrangement could provide enough air flow rate compared to the original scheme,and meet the producing need.
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2009年第9期109-114,共6页
Journal of Textile Research
关键词
并条机
吸风系统
流场
数值仿真
drawing frame
suction system
flow field
numerical simulation
