本文用高速摄像机拍摄乙烯扩散火焰图像,探究了空气伴流、O2/N2富氧气氛伴流和O2/CO2富氧气氛伴流三种情况下的火焰脉动特性.通过对图像处理分析可知,氧化剂伴流会抑制火焰脉动.随着伴流流量的增加,一方面火焰脉动频率增加,最后稳定在某一特定值上;另一方面火焰可见形状波动范围减小.基于上述分析,拟合并给出了伴流流量与脉动频率的关系.
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