A Comprehensive Experimental Study on Immiscible Displacements in Porous Media:Effects of Capillary Forces,Viscous Forces,Wettability and Pore Geometries

作     者：HUANG Chao DAI Xiaoye SHI Changxing SHI Lin HUANG Chao;DAI Xiaoye;SHI Changxing;SHI Lin

作者机构：Department of Energy and Power EngineeringTsinghua UniversityBeijing 100084China Key Laboratory of Thermal Science and Power Engineering of Ministry of Education of ChinaBeijing 100084China Key Laboratory for C02 Utilization and Reduction Technology of BeijingBeijing 100084China Department of Mechanical and Industrial EngineeringUniversity of Illinois at ChicagoChicago 60607United States 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2021年第30卷第6期

页      面：2137-2149页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(51876100) the Science Fund for Creative Research Group(No.51621062) 

主　　题：immiscible displacements porous media microfluidic experiments fluid distributions intermittency dynamics 

摘      要：Immiscible displacements in porous media are fundamentally significant for many natural processes and industrial *** extensive work has been done in this field,some limitations still exist due to the difficulty to cover the large number of influencing *** this paper,we present a systematic study involving the coupled influence of capillary forces,viscous forces,wetting properties and pore *** microfluidic experiments with high resolutions,both residual fluid distributions and dynamical invasion processes were clearly captured and quantitatively characterized.A void-filling behavior was identified for drainage as the capillary number Ca *** anomalous void-leaving behavior was found for the case of imbibition with an unfavorable viscosity ratio M,representing many ribbon-like regions invaded at intermediate Ca turned to be not accessible at high Ca.A pore geometry with a large typical pore-throat ratio seemed to enhance the void-leaving *** the dynamical invasion processes,an intermittency behavior was captured in the form of a fluctuation of the increasing rate of the invading saturation with *** intermittency dynamics were most evident for drainage with an unfavorable M.A pore geometry with high porosity acted to suppress the intermittency *** experimental results sketched out a full view of immiscible displacements in porous media under different conditions,and provided a complete dataset which could be used to test the rapid developing pore-scale models.