为了直观地了解前混合磨料射流在淹没条件的流场及射流结构,本文对淹没前混合磨料射流流场进行了体动力学(CFD)仿真与结构分析。研究发现,淹没射流具有很好的速度自模性,能量散耗快,射程短,与国内外学者的理论和实验结果基本吻合,也证明了本文所建立的几何模型、物理模型及仿真结果的正确性。 In order to intuitively understand the flow field and jet structure of the pre-mixed abrasive jet in submerged conditions, the CFD simulation and structural analysis of the mixed abrasive jet flow field before inundation are carried out. It is found that submerged jet has a good speed self-mold, fast dissipation of energy and short range, which is in good agreement with the theoretical and experimental results of domestic and foreign scholars. It also proves that the geometrical model, physical model and simulation results Correctness