针对均匀金属液滴喷射成形过程中的液滴流,建立了均匀液滴流的有限元模型。通过该模型考察了液滴间距对液滴流中各个液滴温度场的影响,并讨论了液滴流的传热系数和冷却速率。结果表明,当液滴间距与液滴直径比为2.8、5.6、8.4、11.1、13.9时,液滴的冷却速率、传热系数均远低于单个液滴,液滴间距对冷却过程的影响较大。随着液滴间距增大,液滴之间的相互影响减小。 Aiming at the droplet flow in the process of jetting uniform metal droplets, a finite element model of uniform droplet flow is established. The model was used to investigate the effect of droplet distance on the temperature field of each drop in the droplet stream. The heat transfer coefficient and cooling rate of the droplet flow were also discussed. The results show that the droplet cooling rate and the heat transfer coefficient are much lower than those of a single droplet when the droplet pitch to droplet diameter ratio are 2.8, 5.6, 8.4, 11.1, 13.9 Big. As the droplet spacing increases, the interaction between the droplets decreases.