详细信息
热局部非平衡条件下含球形空洞流体饱和多孔介质的孔隙压力和热应力分析
Analysis of Pore Pressure and Thermal Stresses around a Spherical Cavity in a Porous Medium on Local Thermal Non-Equilibrium Condition
文献类型:期刊文献
中文题名:热局部非平衡条件下含球形空洞流体饱和多孔介质的孔隙压力和热应力分析
英文题名:Analysis of Pore Pressure and Thermal Stresses around a Spherical Cavity in a Porous Medium on Local Thermal Non-Equilibrium Condition
作者:何录武[1];董亮亮[1]
机构:[1]华东理工大学机械与动力工程学院承压系统安全科学教育部重点实验室,上海200237
年份:2010
卷号:31
期号:4
起止页码:534
中文期刊名:力学季刊
外文期刊名:Chinese Quarterly of Mechanics
收录:CSTPCD;;北大核心:【北大核心2008】;CSCD:【CSCD2011_2012】;
基金:上海市重点学科建设项目资助(B503)
语种:中文
中文关键词:饱和多孔介质;热局部非平衡;渐近解析解;孔隙压力;热应力
外文关键词:saturated porous medium; local thermal non-equilibrium; asymptotic solution; pore pressure; thermal stress
摘要:基于热局部非平衡条件下饱和多孔介质热-弹性理论,本文研究了含球形空洞流体饱和多孔介质的温度、孔隙压力以及固相热应力。应用Laplace变换法获得了固相和孔隙流体温度场以及孔隙压力在短时间内的渐近解析式。对于粘土和砂岩两种材料,数值分析了热局部非平衡条件对温度、孔隙压力以及固相热应力的影响。结果表明:对于粘土材料,热局部非平衡条件下径向应力绝对值的峰值明显大于热局部平衡条件下绝对值的峰值;对于砂岩材料,相对于热局部平衡情况,热局部非平衡条件下孔隙压力和径向应力绝对值的峰值都有显著的提高。
Based on the local thermal non-equilibrium(LTNE) thermo-poroelasticity theory,the temperatures,pore pressure and thermal stresses around a spherical cavity in an infinite fluid saturated porous mediumare investigated.The asymptotic short time solutions of temperature,pore pressure and thermal stresses are obtained using the Laplace transform technique.Numerical results for two porous materials(clay and sandstone) are presented to examine the effects of LTNE on the temperature,pore pressure and thermal stresses around the spherical cavity.The results show that the LTNE radial stress has a significantly larger magnitude than that of the local thermal equilibrium(LTE) thermo-poroelasticity for the clay,and both the radial stress(magnitude) and pore pressure are significantly increased by the LTNE effectfor the sandstone.
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