Lattice Boltzmann simulation of solute transport in heterogeneous porous media with conduits to estimate macroscopic continuous time random walk model parameters
Lattice Boltzmann simulation of solute transport in heterogeneous porous media with conduits to estimate macroscopic continuous time random walk model parameters
复制标题
使用管道对异质多孔介质中的溶质输运进行格子玻尔兹曼模拟，以估计宏观连续时间随机游走模型参数
DOI：
10.1504/pcfd.2008.018092
复制
发表时间：
2006
影响因子：
0.7
通讯作者：
M. Sukop
中科院分区：
文献类型：
--
作者：
S. Anwar;A. Cortis;M. Sukop
格子Boltzmann模型模拟了多孔介质中溶质运移。用连续时间随机游走模型拟合溶质穿透曲线。通过阻尼流动惯性来模拟多孔介质，当阻尼足够大时，获得达西定律解而不是通常由格子Boltzmann模型提供的Navier-Stokes解。各向异性色散被纳入使用依赖于方向的弛豫时间。我们特别感兴趣的是模拟运输过程的标准对流扩散方程（ADE）的适用性，包括管道中的涡流混合。ADE无法充分拟合这些穿透曲线中的任何一条。
Lattice Boltzmann models simulate solute transport in porous media traversed by conduits. Resulting solute breakthrough curves are fitted with Continuous Time Random Walk models. Porous media are simulated by damping flow inertia and, when the damping is large enough, a Darcy's Law solution instead of the Navier-Stokes solution normally provided by the lattice Boltzmann model is obtained. Anisotropic dispersion is incorporated using a direction-dependent relaxation time. Our particular interest is to simulate transport processes outside the applicability of the standard Advection-Dispersion Equation (ADE) including eddy mixing in conduits. The ADE fails to adequately fit any of these breakthrough curves.