用格子玻尔兹曼方法研究流动-反应耦合的非线性渗流问题

Lattice Boltzmann simulation for nonlinear flow in porous media with coupling reaction

根据格子玻尔兹曼计算技术以及相应渗流理论 ,对多孔介质内流动 反应 (矿物介质的溶解等 )耦合这一非线性渗流问题进行了数值研究 ,计算结果与解析解基本符合 .数字图像重构技术反映的结果表明流体流动和反应之间可以发生强烈的耦合和反耦合作用 ,同时可以形成条带结构这一自组织现象 。

Based on the lattce Boltzmann method and theory of fluid flow in porous media,a numerical model is discussed for the nonlinear flow in porous media with coupling reaction.The numerical simulation results agree well with the analytical solution;and the reconstructed digital images show that there are strong coupling and anti-coupling effect between the fluid flow and the reaction,which results in the self-organization cingulum forms.All these also agree well with the experimental and theoretical prediction.