The dynamic characteristics of droplet obliquely impact on a liquid film are investigated numerically by using the Coupled Level Set and Volume of Fluid method (CLSVOF), with the impact angle ranging from 0° to 60°. The influence factors as film thickness and Weber number on the splashing formation and the crown evolution are also systematically investigated. Results showed that the crown radius on the behind side of the advancing droplet decreases as the impact angle increases, while the crown radius on the front side of the advancing droplet appears to be an opposite trend. Furthermore, the crown diameter is almost unchanged when the impact angle increases from 30° to 45°. However, when the impact angle increases to 60°, the crown lamella on the front side of the advancing droplet is completely suppressed. It is found that the crown height does not linearly change with the film thickness. With an increase in the film thickness, the right crown height first increases and then decreases, indicating the presence of a critical film thickness under the studied conditions. An increase in Weber number results in a transition from non-splashing to partial splashing and even to entire splashing.

采用液位和液量耦合法（CLSVOF），对液滴倾斜冲击液膜的动力学特性进行了数值研究，冲击角范围为0°至60°。还系统地研究了膜厚和韦伯数对飞溅形成和冠演变的影响因素。结果表明，随着冲击角的增加，前进液滴后侧的齿冠半径减小，而前进液滴前侧的齿冠半径似乎是相反的趋势。此外，当冲击角从30°增加到45°时，胎冠直径几乎不变。然而，当冲击角增加到60°时，在前进液滴的前侧的冠状薄层被完全抑制。发现冠的高度不随膜厚度线性变化。随着膜厚度的增加，右冠的高度先增大然后减小，这表明在所研究的条件下存在临界膜厚度。韦伯数的增加导致从非飞溅到部分飞溅甚至整个飞溅的过渡。