ABSTRACT
Regarding technological applications drops and bubbles are dispersed phases of a fluid in a second immiscible fluid phase used for material transportation, mixing, extraction, phase change, etc., with or without chemical reactions. In all these processes the interfacial area between the two phases and the transport properties of solute components in the bulk and at the interface are the major parameters to be discussed. For the integral values of these parameters, elementary knowledge on the
single drops or bubbles is essential. Any change in the fluids’ properties (chemical composition, density, viscosity, etc.) and solute components, can affect the mentioned parameters significantly. According to the numerous possibilities of different fluids and solute components, it is realistic to speak about a countless number of different liquid systems in fundamental investigations and technological applications. However, all available analytical solutions to theoretical models for describing such systems contain respective simplifications which restrict their applicability. On the other hand, numerical techniques and computational approaches like CFD (computational fluid dynamic) and MD (molecular dynamic) simulations are available but still insufficient for many practical applications.
