Propagation characteristics of thermoelastic wave in unsaturated soil

doi:10.16285/j.rsm.2019.0738

IR > 土木工程学院

	Propagation characteristics of thermoelastic wave in unsaturated soil
	Liu, Hong-Bo 1; Zhou, Feng-Xi1,2 ; Yue, Guo-Dong 1; Hao, Lei-Chao 1
	2020-05-10
发表期刊	Yantu Lixue/Rock and Soil Mechanics
ISSN	10007598
卷号	41 期号:5 页码:1613-1624
摘要	Based on the research results of unsaturated porous medium, considering the influence of thermal effect and porosity fluid tortuosity, the propagation characteristics of thermoelastic wave in unsaturated soil are studied in this paper. The thermoelastic wave equations of the problem are established by the mass balance equation, seepage flow equations of continuity and momentum balance, and generalized non-Fourier heat conduction law of the solid-liquid-gas three-phase medium coupled with heat in unsaturated soil. By introducing the potential function, the dispersion characteristic equation of thermoelastic wave in unsaturated soil is theoretically derived. The variations of the wave velocity and attenuation coefficient of several types of thermoelastic waves with the thermophysical parameters such as tortuosity, thermal expansion coefficient and medium temperature, are analyzed in numerical examples. The results show that the increase of pore water tortuosity causes the decrease of wave velocity of P1 wave, P3 wave and S wave, while the increase of pore gas tortuosity only causes the decrease of wave velocity of P2 wave. The increase of thermal expansion coefficient causes the increase of P1 wave velocity and the decrease of thermal wave (T wave) velocity. The rise of medium temperature causes the increase of wave velocity of various thermoelastic waves. The variations of frequency, thermal expansion coefficient and medium temperature have a great influence on the attenuation coefficients of various thermoelastic waves, and these variations cannot be ignored. © 2020, Science Press. All right reserved.
关键词	Acoustic wave velocity Expansion Heat conduction Hydrocarbon seepage Liquefied gases Porous materials Shear waves Soils Thermal expansion Thermoelasticity Wave propagation Attenuation coefficient Dispersion characteristics Mass balance equations Non-Fourier heat conduction Propagation characteristics Thermal expansion coefficients Thermo-physical parameters Unsaturated porous medium
DOI	10.16285/j.rsm.2019.0738
收录类别	EI
语种	中文
出版者	Academia Sinica
EI入藏号	20203108987653
EI主题词	Wave equations
来源库	Compendex
分类代码	483.1 Soils and Soil Mechanics - 641.2 Heat Transfer - 751.1 Acoustic Waves - 921.2 Calculus - 931.1 Mechanics - 931.2 Physical Properties of Gases, Liquids and Solids - 951 Materials Science
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/115186
专题	土木工程学院
作者单位	1.School of Civil Engineering, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China; 2.Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou; Gansu; 730050, China
第一作者单位	土木工程学院
第一作者的第一单位	土木工程学院
推荐引用方式 GB/T 7714	Liu, Hong-Bo,Zhou, Feng-Xi,Yue, Guo-Dong,et al. Propagation characteristics of thermoelastic wave in unsaturated soil[J]. Yantu Lixue/Rock and Soil Mechanics,2020,41(5):1613-1624.
APA	Liu, Hong-Bo,Zhou, Feng-Xi,Yue, Guo-Dong,&Hao, Lei-Chao.(2020).Propagation characteristics of thermoelastic wave in unsaturated soil.Yantu Lixue/Rock and Soil Mechanics,41(5),1613-1624.
MLA	Liu, Hong-Bo,et al."Propagation characteristics of thermoelastic wave in unsaturated soil".Yantu Lixue/Rock and Soil Mechanics 41.5(2020):1613-1624.