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中文摘要：
可视化实验研究了不同液/气流速和孔壁面浸润性对非均匀毛细多孔层内稳态饱和度、侵入时间及气、液微观传输特性的影响。结果表明：多孔层内液相饱和度及侵入时间均随液相侵入速率的增大而减小;亲水性多孔介质内液体优先选择小孔侵渗,且孔内侵渗速度变化较大;亲水性多孔层内的稳态气相饱和度随气相驱替速率的增加而增加,憎水性多孔层内的稳态气相饱和度随气相驱替速率的增加其波动幅度增大,两种多孔介质内气相驱替过程均呈毛细指进形态;气相驱替过程中,亲水性多孔层出口侧可渗透壁面上呈大气泡连续生长现象,憎水性多孔层出口侧可渗透壁面上呈小气泡断续生长现象。
英文摘要：
Visual experiments were conducted for studying the characteristics of gas/liquid invasionpercolation process in a non-uniform capillary porous layer.The results show that the stationary liquid saturation and invasion time decreased with the increasing of liquid invasion volume flow rate;Paths with smaller pore are invaded preferentially by liquid and the velocity of invading in pores changed obviously in hydrophilic porous media;The fluctuation range of stationary gas saturation increased with the increasing of gas replacement volume flow rate;The process of gas replacement revealed itself as capillary fingering in both hydrophilic and hydrophobic porous media; During gas transporting through hydrophilic porous layer,the continuous growth larger bubbles usually occurred at the outlet permeable sidewall.But during gas transporting through hydrophobic porous layer,the discontinuous growth small bubbles usually occurred at the outlet permeable sidewall.
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