This paper discusses the general theory of particle system. Then, it analyses the model and the characteristic of the simulation to flame and explosion using particle system. Finally,it gives two kinds of technique improving the arithmetic rapidity.%文章首先介绍了粒子系统的一般原理,然后分析了用粒子系统模拟火焰和爆炸过程的模型和特点,并提出了一些提高算法实时性的加速技巧。
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