Abstract: To solve the mixing uniformity problem of gunpowders composition in fireworks, the common used methods of mixing gunpowders were synthetically compared. The gunpowders were mixed by offering pulsed compressed air to the air mixer with 16 nozzles uniformly distributing in circumferential direction. The results show that the pneumatic hybrid method is more suitable for gunpowders. The trajectory of particles in the mixer is beneficial to touch， collision and impact of gunpowders. The gunpowders gotten from the simulation are more well-distributed and better for the mixture of gunpowders.

Keywords： gunpowder; pneumatic hybrid method; computional fluid dynarnics

中图分类号：TH692.9，TQ567          文献标志码：A

文章编号：1008-5548（2014）03-0025-05

DOI:10.13732/j.issn.1008-5548.2014.03.006

收稿日期：2013-08-13， 修回日期：2013-09-15，在线出版时间：2014-06-24。

第一作者简介：任继良（1984—），男，硕士，助理工程师，主要从事环保设备的结构研发。 电话： 13657484069，E-mail：antonytyut@163.com。