Specific interface area in a thin layer system of two immiscible liquids with vapour generation at the contact interface

Winter School on Continuous Media Mechanics

Pimenova, Anastasiya V.^1 ; Gazdaliev, Ilias M.^2 ; Goldobin, Denis S.^1,2

Institute of Continuous Media Mechanics UB RAS, 1 Akademika Koroleva street, Perm

614013, Russia^1

Department of Theoretical Physics, Perm State University, 15 Bukireva street, Perm

614990, Russia^2

关键词: Contact interface;    Dynamics of system;    Endothermic chemical reactions;    Gravitational energy;    Immiscible liquids;    Multiphase fluids;    Per unit volume;    Specific interface;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/208/1/012033/pdf
DOI  :  10.1088/1757-899X/208/1/012033

来源: IOP

【 摘 要 】

For well-stirred multiphase fluid systems the mean interface area per unit volume, or "specific interface area" SV, is a significant characteristic of the system state. In particular, it is important for the dynamics of systems of immiscible liquids experiencing interfacial boiling. We estimate the value of parameter SVas a function of the heat influx to the system or the average system overheat Θ above the interfacial boiling point. The derived results can be reformulated for the case of an endothermic chemical reaction between two liquid reagents with the gaseous form of one of the reaction products. The final results are restricted to the case of thin layers, where the potential gravitational energy of bubbles leaving the contact interface is small compared to their surface tension energy.