摘要
利用计算流体力学(CFD)中的fluent软件对喷嘴淹没磨料射流进行数值模拟,研究锥直形喷嘴在不同射流靶距、不同磨料颗粒直径和颗粒浓度情况下液固两相射流场特性,给出水和磨料速度分布规律,考虑液固两相间的相互作用力.结果表明:液固两相速度在喷嘴收缩段迅速增加,水与磨料颗粒之间存在速度滑移;液固两相入口速度为170 m/s、射流靶距为30 mm、磨料颗粒直径为0.15 mm、颗粒浓度为70%时,射流效果比较理想.
Abrasive jets submerged of nozzle is simulated by using Computational Fluid Dynamics(CFD) software fluent.The flow field characteristics of liquid-solid two-phase in the condition of straight cone nozzle at different jets target distance and different abrasive particle size and concentration is discussed.The velocity distribution law of water and abrasive particle is given.The interactive force between liquid and solid two-phase is considered.The results show that the jet velocity increases quickly in the contractive section of nozzle.There exists velocity slip between water and abrasive particles.When the inlet velocity of liquid-solid two-phase is 170 m/s,the width of the jet impact is 30 mm,the diameter of abrasive particle is 0.15 mm,the concentration of particle is 70%,and the effect of jet is ideal.
出处
《大庆石油学院学报》
CAS
北大核心
2011年第1期51-54,117,共4页
Journal of Daqing Petroleum Institute
关键词
淹没磨料射流
锥直喷嘴
流场
靶距
颗粒直径
颗粒浓度
数值模拟
abrasive water jets submerged
straight cone nozzle
flow field
target distance
particle diameter
particle concentration
numerical simulation
