基于Fluent的旋流喷嘴内流场速度数值模拟  

Numerical Simulation of Flow Field Velocity in Swirl Nozzle based on Fluent

作　　者：张虎虎 张瑞平[1] ZHANG Huhu;ZHANG Ruiping(College of Coal Engineering,Shanxi Datong University,Datong 037000,China)

机构地区：[1]山西大同大学煤炭工程学院,山西大同037000

出　　处：《煤》2024年第11期15-19,共5页Coal

基　　金：山西省2023年度研究生实践创新项目(2023SJ293);山西大同大学2023年研究生教育创新项目(23CX10)。

摘　　要：目前我国针对井下粉尘的防治工作一般采用喷雾降尘方法,喷嘴作为喷雾的发生装置,其内部结构直接影响降尘效率。为了解喷嘴内部流场在流动过程中的变化情况,依据流体力学基本理论,结合Fluent流体分析软件对矿用五孔旋流喷嘴的单孔进行内部流场模拟仿真,分析了喷嘴流动过程中旋芯加速、旋流室强化、收缩段加速、出口段整流4个阶段。并在旋流室深度原有的基础上,分别加设1 mm、2 mm来探究对喷嘴出口速度的影响。结果表明:喷嘴出口速度分布随着旋流室深度增加呈现均匀趋势,最大出口速度呈现先增大后减小的趋势。At present,spray dust removal method is generally used for the prevention and control of underground dust in China.The noz-zle is used as the generation device of spray,and its internal structure directly affects the dust removal efficiency.In order to understand the changes of the flow field inside the nozzle during the flow process,based on the basic theory of fluid mechanics and combined with the fluid analysis software Fluent,the simulation of the flow field inside the five-hole swirl nozzle for mining was carried out to analyze the four stages of swirl core acceleration,swirl chamber strengthening,contraction section acceleration and outlet section rectifier during the flow process of the nozzle.On the basis of the original swirl chamber depth,add 1 mm and 2 mm respectively to explore the influ-ence on the nozzle exit velocity.The results show that the velocity distribution of nozzle outlet tends to be uniform with the increase of swirl chamber depth,and the maximum outlet velocity increases first and then decreases.

关 键 词：旋流喷嘴 数值模拟 FLUENT 出口速度 

分 类 号：TK478.9[动力工程及工程热物理—动力机械及工程]