Fast collapse of a vapor bubble. (January 2017)

• Record Type: Journal Article
• Authors: Pavlov, P.A.
• Is Part Of: International journal of heat and mass transfer. Volume 104(2017:Jan.)
• Page Start: 627
• Page End: 633
• Publication Date: 2017-01
• Subjects: Evaporation -- Density jump -- Adiabatic process -- Condensation -- Stream bubble -- Adiabatic compression -- Heat-mass transfer; Heat -- Transmission -- Periodicals; Mass transfer -- Periodicals; Chaleur -- Transmission -- Périodiques; Transfert de masse -- Périodiques; Electronic journals; 621.4022
• DOI: 10.1016/j.ijheatmasstransfer.2016.08.097
• Languages: English
• ISSNs: 0017-9310

Abstract

Graphical Abstract: Highlights: The temperature field and heat fluxes close to the interface have been calculated. An adiabatic temperature increase at the center of a bubble is supposed. A system of equations for calculating the bubble radius has been derived. The pressure and the temperature at the instant of the complete collapse of the bubble have been found. The role of the condensation process in the bubble dynamics has been elucidated. Abstract: The dynamics of collapse of a vapor bubble under the action of an instantaneously applied external pressure has been calculated. In the initial state the bubble is in thermal and mechanical equilibrium with the surrounding liquid. The bubble compression causes vapor condensation and establishment of the pressure of saturated vapor in the bubble at the interface temperature. An adiabatic increase in the temperature is presumably observed in the body of the bubble. The temperature field and the heat fluxes close to the interface have been calculated. The mass flux from the bubble has been found from the heat balance. The pressure field in the liquid was calculated for a nonviscous and incompressible liquid. As a result, a system of equations has been obtained for calculating the vapor pressure in the bubble, the bubble radius and the compression rate. The role of the condensation process in the bubble dynamics has been elucidated. The pressure and the temperature in the final stage of collapse of a bubble have been found.