摘要
根据微观不可压饱和多孔介质热-力-流相互作用的一般理论,在固相骨架小变形的假定下,考虑固相和流相相互作用的粘性耗散,研究了多孔介质平板通道强迫对流热局部非平衡的热应力问题.建立了问题的热-力数学模型,根据饱和多孔介质的平衡方程,在固相骨架只存在横向位移的假定下,求解了固相骨架的位移和相应的热应力,数值考察了各种物性参数对热应力分布的影响,讨论了热局部平衡模型的适用性.
Based on the general theory of the thermo-mechanical-hydro couplings of saturated porous media, and take effect of the viscous dissipation due to the interaction between the two phases into account, a thermal stress of the local thermal nonequilihrium for forced convection in a porous medium parallel plate channel is investigated under the assumption of infinitesimal deformation of the solid skeleton. The mathematical model is established for the problem. Then under the assumption that the displacement of the solid phase is in transversal, the displacement and corresponding thermal stress are obtained from the equilibrium equation of porous media. The influences of dimensionless material parameters on the thermal stresses are revealed numerically, and the applicability of model of the local thermal equilibrium is discussed.
出处
《固体力学学报》
CAS
CSCD
北大核心
2006年第3期293-297,共5页
Chinese Journal of Solid Mechanics
基金
国家自然科学基金(10272070)
上海市重点学科建设项目(Y0103)资助
关键词
饱和多孔介质
热局部非平衡
热应力分析
参数研究
saturated porous medium, local thermally nonequilihrium, analysis of thermal stress, parameter study
