Manas Ranjan Behera , Anirvan Dasgupta , Sudipto Chakraborty
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引用次数: 3
Abstract
The coalescence dynamics of a liquid drop on a liquid pool are investigated, considering either air or another liquid as a surrounding fluid. Numerical simulations are performed over a wide range of dimensionless parameters to investigate the subtle interplay of different forces on the partial coalescence and complete coalescence regimes. Our comprehensive study reveals that these two regimes can be demarcated into three sub-regimes depending on the coalescence stage: (i) first-stage partial coalescence, (ii) second-stage complete coalescence, and (iii) first-stage complete coalescence. This rarity classification of the coalescence process is illustrated as a function of the controlling dimensionless numbers in the phase diagrams. To gain quantitative insights into the coalescence dynamics, the hydrodynamic variances associated with this parametric analysis are examined in terms of kinetics of the neck radius and the apex height of the drop, ratio of the daughter drop to mother drop diameter, and the pinch-off time.
期刊介绍:
Chemical engineering enables the transformation of natural resources and energy into useful products for society. It draws on and applies natural sciences, mathematics and economics, and has developed fundamental engineering science that underpins the discipline.
Chemical Engineering Science (CES) has been publishing papers on the fundamentals of chemical engineering since 1951. CES is the platform where the most significant advances in the discipline have ever since been published. Chemical Engineering Science has accompanied and sustained chemical engineering through its development into the vibrant and broad scientific discipline it is today.