图为不同粒径粒子的径向距离与轴向距离的关系图。从图中可以看出，10-70 μm的粒子在进入喷管直管段时，受横向焰流的推进作用，其运动轨迹向气体的流动方向偏转。在飞离喷枪管口之后，不同粒径的粒子逐渐开始发散。虽粒子的粒径不同，但在粒子的整个飞行过程中并没有出现粒子与喷枪管壁碰撞的现象，即粒子的飞行轨迹没有突变。

The figure shows the relationship between the radial distance and axial distance of particles of different particle sizes. It can be seen from the figure that the particles of 10-70 μm are propelled by the lateral flame flow when they enter the straight section of the nozzle, and their trajectories are deflected toward the flow direction of the gas. After flying away from the nozzle, the particles of different particle sizes gradually start to disperse. Although the particle size is different, but there is no particle collision with the gun wall during the entire flight of the particles, that is, there is no sudden change in the flight trajectory of the particles.