∏定理教学中若干值得注意的问题

Some Basic Aspects in Teaching the ∏-Theorem

以降膜流动中气、液相间质量传递过程的量纲分析为例,结合物理背景和∏定理应用两方面展示该定理应用于物理问题分析时值得注意的一些方面,重点指明物理分析和相似模化的结合方法,以及将该定理用于工程放大的方法。

Dimensional analysis of gas-liquid mass transfer in falling film flows is discussed as an example to show some basic aspects when applying the R-theorem to practical physical problems. In particular, methods for physically meaningful similitude modeling and scale-up of process units are demonstrated.