高校地质学报Issue(4)：677-682,6.
渗透率空间变异性对重非水相流体运移的影响
Impacts of the Spatial Variation of Permeability on the Transport of Dense Non-aqueous Phase Liquids in Porous Media
摘要
Abstract
A multiphase (including NAPL-aqueous-gas) model is established to investigate the migration of dense non-aqueous phase liquid (DNAPLs) in unsaturated-saturated porous media. Four scenarios of stochastic permeability fields with different spatial variation are generated using the Karhunen-Loeve expansion method. DNAPLs sinfiltration and spreading behavior is further simulated based on the four scenarios of permeability fields. The DNAPLs saturation and its spatial moments are analyzed to investigate the impacts of the spatial variation of permeability on DNAPLs migration. Numerical results show that the variation of DNAPLs saturation is increased with the enlargement of the variation of permeability. The migration of DNAPLs sis strongly influenced by the preferential pathway which controls the migration paths and the final distribution of DNAPLs. Moreover, the migration of DNAPLs is affected by the permeability anisotropy, which reduces the vertical velocity of DNAPLs plume.关键词
重非水相液体/T2VOC/多相流/非均质/渗透率/饱和度Key words
DNAPL/T2VOC/multiphase flow/heterogeneity/permeability/saturation分类
天文与地球科学引用本文复制引用
张蔚,施小清,吴剑锋,吴吉春..渗透率空间变异性对重非水相流体运移的影响[J].高校地质学报,2013,(4):677-682,6.基金项目
国家重点基础研究发展计划（973）（2010CB428803）；国家自然科学基金（41072175,41172206和41030746）联合资助 （）
