The spreading of a n-decane liquid film induced by the impingement of a spray generated by a high-pressure injector is studied experimentally. The experimental setup uses the Refractive Index Matching (RIM) method to observe the development and propagation of the wall film. The influence of injection time, injection pressure, temperature, and injector to wall distance are considered. The film evolution on the wall presents two clear distinct phases. During the injection phase the film area is growing linearly with respect to time. Once the injection is stopped, the film relaxes to its maximal expansion. Each phase is accurately described using a simple modeling based on mass and momentum balance in the liquid film.

实验研究了高压喷射器产生的喷雾撞击引起的正癸烷液膜的扩散。实验装置使用折射率匹配（RIM）方法观察壁膜的发展和传播。考虑进样时间，进样压力，温度和进样器对壁距的影响。墙上的电影演变呈现出两个明显的不同阶段。在注射阶段，薄膜面积相对于时间呈线性增长。一旦停止注射，膜就会松弛至最大膨胀。使用基于液膜中质量和动量平衡的简单模型可以精确描述每个阶段。