多孔岩体热流固耦合有限元模拟

Finite Element Simulation for Coupling THM Behavior in Porous Rock Mass

从理论出发推导出以位移、孔隙压力和温度为未知量的THM耦合控制方程组,包括岩块变形场方程、地下水连续性方程和岩体的能量守恒方程,并通过有限元离散,编制三场耦合模拟程序,通过算例验证程序的可靠,之后通过含热源算例来研究耦合过程.

According to the THM coupling mechanics analysis, the governing equations including those in me chanical, hydrological and thermal fields are theoretically derived in term of displacements, pore pressure and temperature. All the governing equations are discreted both in space and in time domain respectively by using Galerkin method. Then a Fortran program is developed to simulate the THM coupling processes; and it is validated by a 1D consolidation example. At last, an example with heat sources is also computed to simulate the coupling processes.