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根据不稳定性理论，将燃烧室中油滴破碎过程分为ＫＨ不稳定破碎和ＲＴ不稳定破碎；根据Ｗｅｂｅｒ数将喷雾碰壁过程分为粘附、反弹粘附和飞溅附壁射流３ 种模式，建立了油滴破碎和喷雾碰壁的数学模型。根据油滴破碎模型计算所得的喷雾贯穿距离和ＳＭＤ值同试验结果相一致，喷雾碰壁模型计算所得的油滴位置图形与高速摄影结果相一致。将已被试验验证后的模型应用于涡流室式柴油机中， 计算了涡流室内喷雾的发展过程，计算结果与高速摄影结果吻合良好。
According to the theory of instability, the oil droplet crushing process in the combustion chamber is divided into K-H unstable crushing and R-T unstable crushing. According to the Weber number, the process of spraying the wall is divided into sticking, rebounding and splashing. A mathematical model was established for oil droplet breaking and spraying against the wall. The spray through distance and the SMD value calculated by the oil droplet breaking model are consistent with the experimental results. The droplet position pattern calculated by the spray wall model is consistent with the high-speed photography results. The experimental model has been applied to the vortex chamber diesel engine, and the development of the vortex chamber spray has been calculated. The calculated results are in good agreement with the high-speed photography results.