Analytical model of small- and large-amplitude drop oscillation dynamics

被引:1
作者
Tonini, S. [1 ]
Cossali, G. E. [1 ]
机构
[1] Univ Bergamo, Dept Engn & Appl Sci, Viale Marconi 5, I-24044 Dalmine, BG, Italy
关键词
NONLINEAR OSCILLATIONS; SHAPE OSCILLATIONS; INVISCID DROPS; LIQUID; BUBBLES; DRIVEN;
D O I
10.1063/5.0230716
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
The mechanical energy balance over a bulk of fluid that oscillates between prolate and oblate shapes in another immiscible fluid is solved using a general spheroidal coordinate system. The drop shape is described by a unique parameter that may continuously vary over the time, making the implementation of the model rather simple. Potential flow is assumed, and inertial and viscous effects are accounted for in both the inner and outer flow fields. The characteristics of drop oscillation for small and large amplitudes are studied, and the results are compared with theoretical, experimental, and numerical data from the open literature. The rather satisfactory validation of the model over a large variety of operating conditions allows its extension to include other physical phenomenon, like evaporation and its effect on drop oscillation.
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页数:16
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