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利用线性不稳定性理论分析了液体燃料射流在分别采用时间模式与空间模式两种方法下液体表面扰动波的波数、频率及最大扰动增长率之间的关系，讨论了两种模式下液体射流结构特征的差别。应用基于粘性液体射流射入气体介质中的物理模型，计算分析了 Ｒｅ 数、 Ｗｅ 数和密度比 Ｑ对时间模式与空间模式差值的影响，结果发现采用时间模式或空间模式并不改变液体射流各阶模式之间的相互关系， Ｗｅ 数和 Ｑ是影响时间模式与空间模式差值的主要因素，而 Ｒｅ 数影响不大。在一定条件下，时间模式与空间模式具有等效性。
Based on the linear instability theory, the relationship between the wave number, frequency and maximum disturbance growth rate of liquid fuel jets under two methods of time mode and space mode are respectively analyzed. The effects of liquid jets structure Differences in characteristics. The effects of Re number, We number and density ratio Q on the difference between time mode and space mode were calculated and analyzed based on the physical model of viscous liquid jets injected into the gas medium. The results showed that the time mode or space mode did not change the liquid jet The correlation between the order modes, We number and Q are the main factors that affect the difference between the time mode and the spatial model, while the Re number has little effect. Under certain conditions, time mode and space mode are equivalent.