Several industrial processes, in some of their operations, involve the presence of two immiscible liquid phases with dispersed drops surrounded by a continuous phase. The drops tend to coalesce to join to their own continuous phase. This phenomenon occurs in many industrial mixing, separation, as well as in environmental processes. In this paper it is analyzed the problem of the coalescence of a single drop at the planar interface of two immiscible liquids. An original model for coalescence mechanism is proposed. It is then compared with some experimental data obtained by the literature or by the authors. The comparisons are quite satisfactory. The mechanism of single drop coalescence contains the bases for the analysis of more complex interfacial structures like froths, that can be of great importance into many equipments.
Mechanism of drop coalescence at the interface of two immiscible liquids
BOZZANO, GIULIA LUISA;DENTE, MARIO
2010-01-01
Abstract
Several industrial processes, in some of their operations, involve the presence of two immiscible liquid phases with dispersed drops surrounded by a continuous phase. The drops tend to coalesce to join to their own continuous phase. This phenomenon occurs in many industrial mixing, separation, as well as in environmental processes. In this paper it is analyzed the problem of the coalescence of a single drop at the planar interface of two immiscible liquids. An original model for coalescence mechanism is proposed. It is then compared with some experimental data obtained by the literature or by the authors. The comparisons are quite satisfactory. The mechanism of single drop coalescence contains the bases for the analysis of more complex interfacial structures like froths, that can be of great importance into many equipments.File | Dimensione | Formato | |
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