地球与行星物理论评（中英文）2026，Vol.57Issue(2)：191-209,19.DOI:10.19975/j.dqyxx.2025-023
非侵入式可视化实验技术在地下水多相渗流研究中的应用探索
Non-invasive imaging approaches for investigating multiphase flow in groundwater systems
摘要
Abstract
Groundwater,as a globally strategic freshwater resource,plays a critical role in ecosystem stability,targeted pollution remediation,and geothermal energy development.Its migration mechanisms directly influence decision-making in these major engineering fields.However,natural porous media—such as aquifer sands,gravels,and fractured rock formations—generally exhibit heterogeneous topological structures and pronounced multiscale effects,resulting in complex nonlinear behaviors in subsurface multiphase flow.Traditional hydrological observa-tion methods are limited by spatial resolution and thus struggle to reveal flow mechanisms and interaction pro-cesses at the pore scale. To overcome these limitations,this study develops a non-invasive,in situ visualization experimental platform integrating high-resolution computed tomography(CT)scanning and microfluidic chip technology,achieving mi-cron-scale spatial resolution for dynamic observation and quantitative characterization of multiphase flow in por-ous media.The experimental system systematically measures fluid saturation distribution,interface morphology evolution,and capillary pressure changes within pore structures. The results indicate that:(1)Wettability,as a key parameter controlling multiphase flow behavior,exerts regu-latory effects throughout the entire process—from pore-scale fluid distribution and interface morphology evolution to core-scale flow responses.By adjusting wettability,the spatial migration pathways and interfacial mechanical states of fluids in sandy porous media are significantly altered,triggering interface structure reconstruction and con-nectivity changes.These microscale processes directly impact displacement efficiency and residual fluid distribu-tion patterns,ultimately leading to pronounced differences in relative permeability response characteristics.(2)Un-der varying wettability,viscosity ratio,and flow rate conditions,multiphase flow exhibits diverse flow regimes and energy conversion characteristics.Wettability,flow velocity,and viscosity synergistically regulate interface stability and the power-energy transfer pathways;notably,in the critical transition zone from capillary-dominated to viscous-dominated flow,external work input markedly increases and interfacial energy fluctuates sharply. Additionally,this work assesses the advantages and technical challenges of the combined CT-microfluidic technique in multiphase flow studies.The findings provide key microscopic mechanistic support for engineering is-sues such as groundwater pollution remediation and enhanced multiphase flow efficiency,demonstrating broad ap-plication potential of non-invasive high-resolution experimental methods in environmental and energy engineering.关键词
多孔介质/多相流/高分辨率成像/润湿性/相对渗透率/能量耗散Key words
porous media/multiphase flow/high-resolution imaging/wettability/relative permeability/energy dissipation分类
天文与地球科学引用本文复制引用
邹双梅,郭正怀,李帅,陶韩旖旎,康侬,江伊蕊,万文杰,韩贻皓,Moussa Ouattara,许沛星,陈冬..非侵入式可视化实验技术在地下水多相渗流研究中的应用探索[J].地球与行星物理论评（中英文）,2026,57(2):191-209,19.基金项目
国家自然科学基金资助项目(42102182)Supported by the National Natural Science Foundation of China(Grant No.42102182) （42102182）
