物理学报Issue(15)：1-14,14.DOI:10.7498/aps.64.154701
多孔介质内溶解与沉淀过程的格子Boltzmann方法模拟∗
Lattice Boltzmann simulation of dissolution and precipitation in p orous media
摘要
Abstract
In this paper, we simulate numerically the dissolution and precipitation in porous media by using the lattice Boltzmann method (LBM). The fluid flow in porous media is simulated by using a multiple-relaxation-time (MRT) LBM, while a D2Q9 lattice BGK model is used for reactive solute transport. First, the code of LBM is tested by simulating the diffusion and reaction at a boundary in an open rectangular domain, and comparing the results with the analytic solution. Then, the effects of the Reynolds number (Re), the Schmidt number (Sc) and the Damkohler number (Da) on the variations of the geometry of the porous media and the concentration field are carefully studied. It can be found that for the dissolution (precipitation), as Re is increased, the porosity of the porous media will be increased (decreased), and the average concentration will be decreased (increased). Besides, at low Damkohler numbers or Schmidt numbers, the dissolution and precipitation will be reaction-controlled and are highly uniform. However, as Da or Sc is high, the dissolution and precipitation will be diffution-controlled, and mainly occur in the upstream and large pore space.关键词
多孔介质/溶解/沉淀/格子Boltzmann方法Key words
porous media/dissolution/precipitation/lattice Boltzmann method引用本文复制引用
张婷,施保昌,柴振华..多孔介质内溶解与沉淀过程的格子Boltzmann方法模拟∗[J].物理学报,2015,(15):1-14,14.基金项目
国家自然科学基金(批准号51306133,11272132)资助的课题@@@@* Projected supported by the National Natural Science Foundation of China (Grant Nos.51306133,11272132) （批准号51306133,11272132）
