基于FLUENT的喷嘴孔型两相流场模拟分析  

Simulation Analysis of Two-phase Flow Field inside Pass of Nozzle Base on FLUENT

作　　者：罗静[1] 曾国辉[2,1] 李丙乾[2,1] LUO Jingb ZENG Guo-huia b LI Bing-qiana(a. Key Laboratory of Advanced Manufacturing Technology for Automobile Parts, Ministry of Educatio b. School of Mechanical Engineering, Chongqing University of Technology,Chongqing 400054, Chin)

机构地区：[1]重庆理工大学机械工程学院,重庆400054 [2]重庆理工大学汽车零部件先进制造技术教育部重点实验室,重庆400054

出　　处：《组合机床与自动化加工技术》2016年第10期44-47,共4页Modular Machine Tool & Automatic Manufacturing Technique

基　　金：国家自然科学基金资助项目(51275550)

摘　　要：针对三种喷嘴孔进行了气固两相流场数值模拟,通过定量的结论来指导喷嘴的选用。基于计算流体力学的方法,建立了欧拉-拉格朗日两相流数值模型,对比分析了气固两相流场的静压,速度的分布以及喷嘴冲蚀磨损的特点。对比发现:气体在流线型和文丘里型喷嘴中膨胀比较充分,收缩型喷嘴对磨料加速性能差,流线型喷嘴性能较好,清理效果佳但不易加工,因此文丘里型喷嘴性价比最高。喷嘴收缩段的冲蚀磨损严重,根据该特点采用梯度功能模型设计抗磨损强的材料,以提高喷嘴整体的耐用度。Numerical simulation of gas-solid two phase flowfield is carried out for three nozzles with hole,guiding the selection of nozzle through quantitative conclusions. Based on computational fluid dynamics method making comparison and analysis the static pressure,the distribution of velocity and the characteristics of the nozzle erosion wear of three kinds of nozzle gas-solid two-phase flowfield. From that,we find gas expansion in the nozzle of the streamline and venturi type is more fully,Contraction nozzle abrasive acceleration performance is poor,Streamline nozzle perform great and its cleaning effect is better,but is not easy to be processed. So select the type of venturi nozzle is the highest cost-effective. the most serious erosion wear happens at nozzle contraction,according to this characteristic designs more anti-fraying material of using gradient function model,so as to improve the overall durability of nozzle.

关 键 词：气动喷丸 喷嘴 两相流场 冲蚀磨损 数值模拟 

分 类 号：TH162[机械工程—机械制造及自动化] TG506[金属学及工艺—金属切削加工及机床]