Specific interface area and self-stirring in a two-liquid system experiencing intense interfacial boiling below the bulk boiling temperatures of both components
1 Institute of Continuous Media Mechanics, UB RAS, Perm 614013, Russia
2 Department of Theoretical Physics, Perm State University, Perm 614990, Russia
Received: 30 June 2016
Revised: 21 November 2016
Published online: 2 May 2017
We present an approach to theoretical assessment of the mean specific interface area (δS/δV) for a well-stirred system of two immiscible liquids experiencing interfacial boiling. The assessment is based on the balance of transformations of mechanical energy and the laws of the momentum and heat transfer in the turbulent boundary layer. The theory yields relations between the specific interface area and the characteristics of the system state. In particular, this allows us to derive the equations of self-cooling dynamics of the system in the absence of external heat supply. The results provide possibility for constructing a self-contained mathematical description of the process of interfacial boiling. In this study, we assume the volume fractions of two components to be similar as well as the values of their kinematic viscosity and molecular heat diffusivity.
© EDP Sciences, Springer-Verlag, 2017