摘要
模拟了颗粒在收缩喷嘴中的轨迹和出口速度,计算了不同粒径砂粒通过具有不同收缩角的喷嘴后获得的总动量;根据气动喷砂粒径,给出了设计和选择喷嘴收缩角的依据.结果表明:不同粒径砂粒通过喷嘴后获得的最大总动量不同,与此对应的喷嘴收缩角也不同,并且粒径越大,砂粒获得最大总动量对应的喷嘴收缩角越小.
The tracks in the diminishing nozzle and exit velocity of particles are simulated with the application of CFD software Fluent.The total momentums of the different diameter particles are calculated when those particles get through the diminishing nozzles with different angle.The results show that particles can reach the maximum momentum when particles get through a nozzle with certain angle,and the angle corresponding to the maximum momentum is decreasing along with the particles diameter increasing,which offer theoretical instruction of selecting suitable diminishing nozzle for the high efficiency work of sand blasting.
出处
《大庆石油学院学报》
CAS
北大核心
2006年第1期63-66,共4页
Journal of Daqing Petroleum Institute
关键词
流体仿真
喷嘴收缩角
颗粒粒径
气动喷砂
运动特性
CFD
nozzle diminishing-angle
particle diameter
pneumatic sand blasting
kinematic property
