基于Fluent的螺旋形喷嘴熔喷流场的数值模拟和试验  

Numerical Simulation and Experiment of Melt Blowing Flow Field of Swirl Nozzle Based on Fluent

作　　者：杜利娟[1] 曾泳春[1] 

机构地区：[1]东华大学纺织学院,上海201620

出　　处：《东华大学学报（自然科学版）》2012年第6期676-682,共7页Journal of Donghua University(Natural Science)

基　　金：国家自然科学基金资助项目(10972052);高等学校全国优秀博士学位论文作者专项资金资助项目(2007B54);新世纪优秀人才支持计划资助项目(NCET-09-0285);上海市曙光计划资助项目(10SG33)

摘　　要：在熔喷技术中气流场速度和温度的变化对纤维的拉伸细化有直接的影响.为研究螺旋形喷嘴熔喷流场的变化情况,利用Gambit建立几何模型,通过Fluent采用标准κ-ε两方程模型对高压、高速可压缩的气流场进行三维数值模拟,并通过试验测量对模拟结果进行验证.结果表明模拟和试验趋势变化基本吻合,模拟研究可实现预测流场特点及变化规律,还可为模头的优化设计提供参考.In the melt blowing process, the velocity and temperature of air flow field play direct role in fiber drawing and refining. In order to study the characteristics of the melt blowing flow field of a swirl nozzle, a geometrical model of a swirl die is created with Gambit, and the compressible turbulent air-jet with high velocity is simulated with standardκ-ε model based on Fluent. Experiments are done to verify the simulation results. The results reveal that the simulation is basically consistent with the experimental results. The simulation study can provide a forecast for experiments, and provide a reference for optimizing parameters of the melt blowing die.

关 键 词：螺旋形喷嘴 熔喷 流场 数值模拟 

分 类 号：TS174.1[轻工技术与工程—纺织材料与纺织品设计]