基于相场法的多孔介质三相相对渗透率的研究  

Investigation on the Relative Permeability of the Triple Phase Immiscible Fluids in Porous Media Based on Phase Field Model

作　　者：刘丽娜 陈黎 陶文铨 LIU Lina;CHEN Li;TAO Wenquan(School of Energy&Power Engineering,Xi’an Jiaotong University,Key Laboratory of Thermo-Fluid Science&Engineering,Xi’an 710049,China)

机构地区：[1]西安交通大学能源与动力工程学院,热流科学与工程教育部重点实验室,西安710049

出　　处：《工程热物理学报》2022年第7期1916-1922,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学面上基金(No.51776159)。

摘　　要：本文基于相场模型研究了多孔介质内的三相流动过程,得到了三相相对渗透率曲线。通过模拟研究了润湿性、黏性比和毛细数对三相相对渗透率的影响。研究结果表明:润湿性对相对渗透率的影响很小;非润湿性流体的相对渗透率随黏性比的增加而增加,中性流体和润湿性流体的相对渗透率随黏性比的增加而降低;非润湿性流体的相对渗透率随毛细数的增加而减小,润湿性流体的相对渗透率随毛细数的增加而增加,中性流体的相对渗透率不随毛细数单调变化。In the present study,the phase field model was used to study the triple phase immiscible fluids flow in porous media and the relative permeability curve of the triple phase immiscible fluids was obtained.Effects of the wettability,the viscosity ratio and the capillary number on the relative permeability were studied by simulation.The simulation results show that the wettability has little effect on the relative permeability.The relative permeability of the nonwetting phase increases as the viscosity ratio increases,whereas that of the neutral phase and the wetting phase decreases with increasing viscosity ratio.The relative permeability of the nonwetting phase decreases with increasing capillary number,while that of the wetting phase increases with increasing capillary number and that of the neutral phase does not change monotonically with capillary number.

关 键 词：相场模型 多孔介质 三相流动 相对渗透率 

分 类 号：TK124[动力工程及工程热物理—工程热物理]