论油膜对波浪的阻尼作用

I. Sergievskaya, S. Ermakov
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引用次数: 7

摘要

对有限厚度油膜对波浪阻尼的影响进行了数值分析。在两流体层模型的框架下,分析了油膜的物理参数(体积、表面和界面粘度、表面和界面张力和弹性)对波阻尼和波数的影响。结果可用于描述原油膜对波浪阻尼的室内实验数据。通过调整油膜参数,使阻尼系数对油膜厚度的依赖关系符合理论和实验,从而估计出油膜的物理参数。结果表明,原油膜具有较低的实际弹性和较高的表面粘度的复合粘弹性系数。所估计的参数能较好地描述原油膜的现场实验结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On wave damping due to oil films
Numerical analysis of wave damping due to oil films of finite thickness was performed. The influence of physical parameters of oil films (volume, surface and interfacial viscosity, surface and interfacial tension and elasticity) on the wave damping and the wave number values was analysed in the frame of the model of two fluid layers. The results were applied to describe the data of previous laboratory experiments on wave damping due to crude oil films. The physical parameters of oil films were estimated when tuning the film parameters to fit theory to experimental dependencies of the damping coefficient on film thickness. It is obtained that crude oil films can be characterized by a complex viscoelasticity coefficient with comparably low real elasticity and high surface viscosity. The estimated parameters can satisfactory describe results of field experiments with crude oil films.
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