孔隙介质中温度变化与化学渗流非线性耦合相互作用过程的数值模拟及实验研究

项目名称： 孔隙介质中温度变化与化学渗流非线性耦合相互作用过程的数值模拟及实验研究

项目编号： No.11272359

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 赵崇斌

作者单位： 中南大学

项目金额： 70万元

中文摘要： 建立一套描述一般性孔隙介质中温度变化与化学渗流相互作用问题并考虑孔隙介质温度变形场，孔隙率分布场，孔隙流体压力场，渗流场，温度场和化学物质输运场六场间的高度非线性耦合相互作用过程的数理化方程组。研究和模拟由温度变化所导致的孔隙介质温度变形场和孔隙率分布场在非等温化学渗流问题中的作用以及对非等温化学渗流溶解面非稳定性的影响规律，完善和创新孔隙介质中非等温化学渗流理论。发展高级的算法模拟孔隙介质中温度变化与化学渗流非线性耦合相互作用现象的详细发展过程。利用模型实验，理论分析，严格数学推导和数值模拟相结合的综合研究方法解决孔隙介质中温度变化与化学渗流相互作用这一高度非线性耦合问题。另外，本研究项目的成果可为研究地表浅层内的成矿过程和地热能源利用技术创新奠定坚实可靠的理论基础，从而对寻找位于地表浅层内的新矿产资源及地热能源利用具有极为广泛的应用前景。

中文关键词： 渗流力学；孔隙介质；温度变化；理论分析；数值模拟

英文摘要： The main purpose of this project is to derive a set of partial differential equations, which can be used to highly nonlinear coupling processes between the thermal deformation field, porosity distribution field, pore-fluid pressure field, seepage field, temperature field and chemical species transport field in fluid-saturated porous media. In particular, the roles played by both the thermal deformation and the porosity distribution due to temperature change in the non-isothermal chemical seepage problem will be simulated and investigated, so that the current non-isothermal chemical seepage theory can be further improved and enriched. As a result, the established theory in this project can be used to investigate the instability and regularity of a non-isothermal chemical seepage system. To simulate the dynamic interaction between temperature change and chemical seepage, advanced numerical algorithms will be proposed. Due to the complicated nature of the highly nonlinear coupling problem, a comprehensive research method, which includes model experiment, theoretical analysis, mathematical deduction and computational simulation, will be used to carry out this project. The outcome of this project can provide a sound theoretical foundation for either exploring new mineral resources or developing innovative technology

英文关键词： Seepage mechanics；porous media；temperature change；theoretical analysis；numerical simulation