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中文摘要：
基于图像处理方法和分型理论研究了液化气扩散火焰边缘分形结构特征。沿火焰轴向将火焰均分为5个区域，研究火焰边缘分形维数沿火焰轴向的变化，通过改变中心通道氧气速度，研究火焰长度、分形维数与过氧系数的关系。研究结果表明：随着过氧系数的增大，火焰长度逐渐缩短；火焰波动范围也减小，从喷嘴到火焰末端分形维数先减小后增大，并且变化范围不大。
英文摘要：
The fractal structure of LPG diffusion fire edge was theoretically studied on the basis of image processing and fractal theory. Each flame image was divided into five zones in the axial direction and the variation of the fire edge fractal dimension was axially analyzed. The relationships of flame length, fractal dimension and overall equivalence ratio were also investigated by changing the oxygen flow rate. The results show that both the length and the fluctuation range of flame gradually decrease with the increasing of peroxy coefficient, while the fractal dimension from the nozzle to the end of the flame decreases first and then increases within small range.
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