水针板喷水孔的流体动力特性分析  

Analysis of the flow dynamic characteristics of hydroentangling nozzles

作　　者：王彩华[1] 

机构地区：[1]浙江理工大学材料与纺织学院,浙江310018

出　　处：《产业用纺织品》2007年第9期9-12,共4页Technical Textiles

摘　　要：采用大型流体计算软件模拟了水流流过圆锥—圆柱型、流线型、圆柱—圆锥型喷水孔时的流动状态,并依据数值模拟结果分析了喷水孔结构对孔口收缩系数、速度系数、流量系数的影响;拍摄了水针图像,并依据水针图像分析了喷水孔结构对水针集束性的影响。分析结果表明,圆柱—圆锥型喷水孔速度系数高,水针集束性好,是用于水刺加工的最佳喷水孔结构。　A CFD technique is employed to simulate the formation of the water-jets discharged from a cone-capillary nozzle,a streamline nozzle and a capillary-cone nozzle,the contraction coefficients,velocity coefficients and discharge coefficients of these nozzles are analyzed depending on the simulations.The water jets discharged from these nozzles are pictured at the point of 32～34 mm far away from the nozzles,the bonds of the water jets are analyzed depending on these pictures.The results indicate that the capillary-cone nozzle is optimum for hydroentangling process because of high velocity coefficient and strong bonds of the water jets.

关 键 词：水针板 喷水孔 水针 流体动力特性 

分 类 号：TS17[轻工技术与工程—纺织材料与纺织品设计]