摘要： 通过分析冲击波气流的运动特点，对Navier-Stokes方程进行合理简化。根据简化后的方程所反映出的气流速度变化规律，提出描述冲击波气流运动的扩散模型。基于该模型所定义的流场，对碎片的运动进行控制，实现对冲击波作用下物体碎片飞散效果的模拟。实验结果表明，该方法具有较强的真实感，能够满足实时性要求。

关键词: 爆炸模拟, 扩散方程, 碎片运动

Abstract: Through analyzing the motion of blast wave, the Navier-Stokes equations are reasonably simplified. According to the main properties of blast wave, which is revealed by the simplified Navier-Stokes equations, a diffusion model is proposed to describe the motion of blast wave. The impact of blast wave is simulated by controlling the motion of fragments propelled by the blast wave based on the diffusion model. Experimental results show the method can achieve strong sense of reality and meet the real-time requirements.

Key words: explosion simulation, diffusion equation, fragment motion

中图分类号: 

• TP391.9