中文摘要：

烟火药火焰中正在燃烧粒子的流场与空间分布对于其点火与辐射性能起着非常重要作用。首先基于烟火药火焰流场的喷射初速等参数建立粒子轨迹模型；然后利用高速摄影仪（HSC），通过调整曝光时间辨析烟火药燃烧火焰中正在燃烧粒子，采用图像处理技术得到粒子的坐标位置和速度矢量，印证粒子轨迹模型并进行修正，从而得到正在燃烧粒子速度分布规律；利用粒子图像速度场仪（PIV）测试烟火药的火焰流场，并与粒子流场进行对比分析。结果显示：正在燃烧粒子形成的流场与火焰流场方向一致，等速区域轮廓有较大差别。随着火焰的升高，火焰流场有收敛趋势，而正在燃烧粒子成离散性。

英文摘要：

The spatial distribution of burning particles in the pyrotechnic flame play an important role in the ignition and spectral radiance of the pyrotechnic. The first, the local model of the burning particles was built based on the parameters of initial velocity. The second, the sharply focused images of the burning particles in pyrotechnic flame were shot by the high speed camera （HSC） photography, and then coordinate position and velocity vector were analyzed by the image processing techniques. As a result, the local model of the burning particles was corroborated and revised, thus the regulation of velocity distribution was derived. Particle image velocimetry （PIV） was used to investigate the spatial pattern and velocity of burning particles in the flame of pyrotechnics. The investigation result shows that the direction of main burning particles matches the fluid field of flame, but the contour profile of velocity exist large difference.