黑龙江科技学院学报2011，Vol.21Issue(3)：206-209,4.
后混合水射流喷丸喷头外流连续相数值模拟
Numerical simulation of continuous phase in nozzle external flow of mixed water-jet shot peening
摘要
Abstract
Aimed at investigate the motion characteristics of the flow field outside of the nozzle in the mixed water jet shot peening, this paper introduces the simulation of the continuous phase of external flow field of the nozzle in the mixed water jet shot peening by FLUENT software, and offers an analysis of the influence of shot peening pressure and target distance to the axial velocity and axial dynamic pressure of water by using 3D incompressible steady reynolds time-averaged N -S equation for continuous phase and standard k - e turbulent mode for dispersed phase based on the flow characteristics of turbulence in water jet. The simulation concludes that there occurs a significant symmetry between the axial velocity and axial dynamic pressure of water in the external flow field, and the maximum value is found in the centre of axis. The increase in value of axial velocity and axial dynamic pressure depends on the increase in the pressure in shot peening, and varies the increase of the target distance. The pressure of 350 Mpa and the target distance of 50 mm produce the maximum value of axial velocity of 22.0 m/s and the maximum value of axial dynamic pressure of 0. 24 Mpa. The study provides the base for the analysis of motion states of the discrete phase projectile of external flow field.关键词
水射流/喷丸/外流场/数值模拟Key words
water jet/peening/external flow field/numerical simulation分类
机械制造引用本文复制引用
董星,任树栋,孙剑峰,李德玉..后混合水射流喷丸喷头外流连续相数值模拟[J].黑龙江科技学院学报,2011,21(3):206-209,4.基金项目
黑龙江省教育厅科学技术研究项目(11541309) （11541309）
哈尔滨市科技创新人才研究专项资金项目(2009RFXXG203) （2009RFXXG203）
