摘要
聚合物流体在多孔介质中渗流的研究是近年来有重大进展的领域。本文介绍从力学与物理方法进行渗流机理研究的思路、主要结果和当前活跃的研究课题。流体的非牛顿性对复杂边界条件下均匀流体力学效应的影响已得到了较好的定量处理;揭示了拉伸流粘弹特性对渗流影响的机理,其定量描述则尚有待努力。进而讨论了石油工程中十分重要的非均一流体渗流的新进展,包括大分子效应与粘性指进效应及其分形描述。对于上述物理效应的综合考虑将使聚合物渗流力学研究进入新的阶段。
Considerable progress has been achieved an the research on the flow of polymeric liquids through porous media in recent years. In this paper, main advances in this area are reviewed and the emphasis is put on the theoretical approaches on the mechanism and some recent active research branches of the flow of polymer solutions through porous media. It is pointed out that among the macro-effects on the homogeneous fluids with non-slipping boundary conditions, non-Newtonian (shearthinning) behavior has been quantitatively treated successfully, while the viscoelastic and elongational effects on the flow of non-Newtonian fluids through porous media deserve further quantitative descriptions. Discussions are followed on the recent advances of flows of non-homogeneous fluids through porous media, which arc very important in crude oil recovery, including the macromolecular effects, viscous fingering and its fractal description. It could be expected that the understanding on the mechanism of the flows of polymeric liquids through porous media will reach a new stage through the comprehensive considerations of above mentioned effects.
出处
《力学进展》
EI
CSCD
北大核心
1992年第1期20-34,共15页
Advances in Mechanics
基金
国家自然科学基金
关键词
聚合物流体
渗流机理
非牛顿性
polymeric liquids
flow through porous media
non-Newtonian behavior
viscoelastic effectsiviscous fingering
macromolecular effects
