ABSTRACT
The enormous advances in electronic data processing today enable the engineer to formulate fluiddynamic transport processes, especially also with phase change in a detailed mathematical, numerical way, and modern date aquisition systems make it possible to gain detailed insight into the nature of physical phenomena.
Modern optical methods and also impedance methods are especially well suited for experimental studies, because of their inertialess and non-invasive mode of operation. Possible applications of optical methods, and also impedance methods are briefly described with emphasis to heat transfer with phase change and also to fluiddynamics in two-phase flow. The examples demonstrate the capabilities and the importance of new measuring techniques.
