基于CFD的喷嘴轮廓对喷嘴能量损失影响分析  

Analysis on influence of nozzle profile on nozzle energy loss based on CFD

作　　者：梁钦[1,2] 高贵军[1,2] 刘邱祖[1,2] 

机构地区：[1]太原理工大学机械工程学院,山西太原030024 [2]山西省矿山流体工程实验室(研究中心),山西太原030024

出　　处：《矿山机械》2014年第3期94-98,共5页Mining & Processing Equipment

基　　金：国家自然科学基金联合基金项目(U1261107);山西省自然科学基金基础研究计划项目(2012011018-1)

摘　　要：在喷雾降尘设备中,喷嘴是一个关键部件,其能量损失的大小直接影响喷雾的效率。笔者基于流体力学理论,利用FLUENT软件对锥形和流线形喷嘴内流场进行了仿真,并对其能量损失进行了对比分析。结果表明,喷嘴的能量损失主要发生在入口处;锥形喷嘴的入口收缩角越小,喷嘴能量损失越小;一般情况下,流线形轮廓的喷嘴能量损失小于锥形喷嘴;维多辛斯基曲线喷嘴喷口处的压力分布较平稳,其能量损失小于余弦曲线喷嘴。The nozzle is a very important part of the spray dust collecting equipment. Its energy loss directly affects the spraying efficiency. In the paper, the inner flow fields of the conical nozzles and the streamline nozzles were simulated based on fluid mechanics theory by using FLUENT software, and the amount of the energy loss were compared. The results showed： the energy loss mainly occurred in the nozzle inlet; as to the conical nozzle, the smaller the inlet contracting angle was, the less the nozzle energy loss was; generally, the energy loss of the streamlined nozzle was less than that of the conical nozzle; the pressure distribution of Witozinsky curve nozzle was relatively uniform and its energy loss was less than that of cosine curve nozzle.

关 键 词：喷嘴 能量损失 FLUENT仿真 压力分布 

分 类 号：TD714.4[矿业工程—矿井通风与安全]