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The effect of the tortuosity of fluid phases on the phase velocity of Rayleigh wave in unsaturated porothermoelastic media
Journal of Thermal Stresses ( IF 2.8 ) Pub Date : 2020-04-27 , DOI: 10.1080/01495739.2020.1748554
Hongbo Liu 1 , Fengxi Zhou 1, 2 , Ruiling Zhang 1 , Guodong Yue 1 , Changdong Liu 1
Affiliation  

Abstract Based on the frame of elastic theory for unsaturated porous medium, considering the influence of the thermal effect, the effects of the tortuosity of fluid phases on the phase velocity of Rayleigh wave in unsaturated porous media are studied. Firstly, the thermoelastic wave equations for three-phase porous media are established by taking into account the effect of the tortuosity of fluid phases. Secondly, through a theoretical derivation, the dispersion equation of Rayleigh wave for unsaturated porothermoelastic media is given by introducing the potential functions. Finally, the variations of the phase velocity of Rayleigh wave are analyzed with numerical examples. The results demonstrate that the phase velocity of Rayleigh wave is not just related to the frequency but also affected by the tortuosity of pore-fluid. The effect of the tortuosity of pore-liquid on the phase velocity of Rayleigh wave is more significant than that of the tortuosity of pore-gas on the phase velocity of Rayleigh wave.

中文翻译:

非饱和多孔热弹性介质中流体相曲率对瑞利波相速度的影响

摘要 基于非饱和多孔介质弹性理论框架,考虑热效应的影响,研究了非饱和多孔介质中流体相曲率对瑞利波相速度的影响。首先,考虑流体相曲率的影响,建立了三相多孔介质的热弹性波动方程。其次,通过理论推导,引入势函数,给出了不饱和多孔热弹性介质瑞利波的色散方程。最后,通过数值算例分析了瑞利波相速度的变化规律。结果表明,瑞利波的相速度不仅与频率有关,还受孔隙流体曲率的影响。
更新日期:2020-04-27
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