The theoretical and experimental results are compared in the classical problem on regular two-dimensional waves in heavy viscous liquid films down a vertical plane. Some similarity transformations are used to perform a comparative analysis of numerical methods to study the nonlinear waves formed in a film during the spatial and time development of disturbances in the main steady flow.

中文翻译：

---

下降液膜扰动的时空发展中的极限波形式

在经典问题中，在垂直平面上的重粘性液体薄膜中，对规则二维波进行了理论和实验结果的比较。使用一些相似变换对数值方法进行比较分析，以研究在主要稳定流中扰动的空间和时间发展过程中在膜中形成的非线性波。