Effects of Pore Scale Mixing on Reactive Transport

0121898 Valocchi拟议的研究的目的是提高反应性运输的基本理解，最终应用于补救过程和管理和监管危险废物的网站。 一个特别的目标是确定反应性运输的孔隙尺度混合的影响。 这项研究的具体目标是：（1）确定局部速度、孔几何形状和反应速率常数对均匀孔网络中反应程度的影响，（2）确定局部速度、孔几何形状和反应速率常数对非均匀孔网络中反应程度的影响，和（3）发展的关系，使孔隙规模混合的影响，反应运输要占在连续规模。 微观模型实验和晶格玻尔兹曼（LB）模拟的组合将被用来量化这些现象。 LB方法是一种基于动力学理论的数值方法，用于求解复杂孔隙结构中的流体动力学和扩散输运问题。***

0121898 Valocchi The objective of the proposed research is to improve fundamental understanding of reactive transport with the ultimate application to remediation processes and the management and regulation of hazardous waste sites. A particular goal is to determine the effects of pore-scale mixing on reactive transport. The specific objectives of this research are to: (1) determine the effects of local velocity, pore geometry, and reaction rate constant on the extent of reaction in a homogenous pore network, (2) determine the effects of local velocity, pore geometry, and reaction rate constant on the extent of reaction in heterogeneous pore networks, and (3) develop relationships that allow the effects of pore scale-mixing on reactive transport to be accounted for at the continuum-scale. A combination of micromodel experiments and Lattice-Boltzmann (LB) simulations will be used to quantify these phenomena. The LB method is a kinetic theory-based numerical technique for solving hydrodynamic and diffusive transport problems in complex pore structures. ***