Effect of Inner Phase on Size Distribution of Bubble or Drop Breakup.

0496931 - ÚCHP 2019 FR eng C - Konferenční příspěvek (zahraniční konf.)
Zedníková, Mária - Vejražka, Jiří - Stanovský, Petr
Effect of Inner Phase on Size Distribution of Bubble or Drop Breakup.
Book of Abstracts. -, 2017. ISBN N.
[International Workshop on Bubble and Drop Interfaces (B&D 2017) /7./. Lyon (FR), 26.06.2017-30.06.2017]
Grant CEP: GA ČR GA15-15467S
Institucionální podpora: RVO:67985858
Klíčová slova: bubble and drop breakup * bubble size distribution * turbulent flow
Obor OECD: Chemical process engineering

Present model predicts the outcome of breakup of a fluid particle (bubble or drop), which is initially deformed and breaks into two daughter particles. An initial deformation of the particle (e.g. due to turbulence) is assumed in a shape of dumbbell with two spherical parts connected with cylindrical neck. The evolution of sizes of particle sub-parts is calculated using Rayleigh-Plesset equations, which consider the inertia of surrounding liquid, capillary action and viscous effects. The redistribution of internal fluid in the particle is calculated estimating pressure drop in the connecting neck. The model computes the sizes of daughter particles after the breakup. Assuming the random initial conditions (various initial shapes and initial velocities of deformation), the size distribution of daughter particles is obtained. These size distributions are qualitatively compared with available experimental data and reasonable agreement is observed.
Trvalý link: http://hdl.handle.net/11104/0289534