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本文从空气动力干扰假说出发，通过分析油－气交界面上不稳定波波幅增长和破碎过程，定性和定量地探讨了索特平均直径及滴径分布。本文认为，燃油雾化过程可分为两阶段：一次雾化和二次雾化。一次雾化只发生在油－气交界面上，主要是喷注和空气之间的气动干扰作用，由射流表面产生不稳定波波幅增长和破碎所引起的；而二次雾化则发生在油气渗混区，由一次雾化后产生的油滴在空气中进一步破碎和相互聚合来决定。算例表明，燃油二次雾化假设及其对索特平均直径ＳＭＤ和滴径分布所作的定量分析是一次成功的尝试。
Based on the hypothesis of aerodynamic interference, this paper qualitatively and quantitatively discusses the Soth’s mean diameter and droplet diameter distribution by analyzing the amplitude and breaking process of the unstable amplitude at the oil-air interface. This paper argues that the fuel atomization process can be divided into two stages: one atomization and two atomization. One atomization occurs only at the oil-gas interface, mainly due to the aerodynamic interference between injection and air, which is caused by the increase and fragmentation of the unstable wave amplitude at the jet surface. The second atomization occurs in the oil and gas Seepage zone, the oil droplets produced by a atomization in the air further broken and the polymerization to decide. The examples show that the assumption of secondary fuel atomization and its quantitative analysis of the mean diameter SMD and the droplet size distribution are a successful attempt.