Prediction and measurement of the fastest-growing mode in two-liquid systems

Patrascu Claudiu; Balan Corneliu

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Prediction and measurement of the fastest-growing mode in two-liquid systems

机译：两液体系统中最快增长模式的预测和测量

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The paper is concerned with the capillary instability of a liquid thread surrounded by another immiscible liquid. We study the occurrence of the dominant mode of perturbation for different combinations of Newtonian and viscoelastic fluids. When a viscoelastic fluid is present, in the limit of small deformations, the dispersion relation is obtained via a Maxwell type approximation of the viscosity curve which can be directly incorporated into an existing model of thread instability. Measurements of the fastest-growing mode are then performed and compared with theoretical predictions. A satisfactory agreement between the theory and experiment is found in terms of the wavenumber of the fastest-growing mode. Published under license by AIP Publishing.

机译：本文涉及由另一种不混溶的液体包围的液体螺纹的毛细管不稳定性。我们研究了牛顿和粘弹性液体不同组合的扰动模式的发生。当存在粘弹性流体时，在小变形的极限中，通过粘度曲线的麦克斯韦型近似获得分散关系，该粘度曲线可以直接结合到现有的螺纹不稳定性模型中。然后对其进行比较并与理论预测进行比较最快的变化模式的测量结果。理论与实验之间的令人满意的协议在最快的发展模式的波兰人方面存在。通过AIP发布在许可证下发布。

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《Physics of fluids》 |2019年第8期|共8页
作者
Patrascu Claudiu; Balan Corneliu;
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Univ Politehn Bucuresti Reorom Lab Hydraul Dept Bucharest Romania;

Univ Politehn Bucuresti Reorom Lab Hydraul Dept Bucharest Romania;

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原文格式 PDF
正文语种 eng
中图分类流体力学;
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Prediction and measurement of the fastest-growing mode in two-liquid systems

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