论文标题
多孔介质中排水期间毛细管和粘性破裂
Capillary and Viscous Fracturing During Drainage in Porous Media
论文作者
论文摘要
对多孔介质中流体流量和固体变形之间的耦合的详细理解对于与广泛的地质和生物过程有关的新技术的发展至关重要。从这些耦合中出现的一个特别具有挑战性的现象是从流体侵袭到多相流期间的破裂的过渡。先前的研究表明，这种过渡对流体流速，毛细血管和多孔培养基的结构特性高度敏感。但是，不存在对相关流体流量和材料故障制度的全面表征。在这里，我们使用了新开发的多相Darcy-Brinkman-Biot框架来检查在软多孔介质中，在粘性多孔介质的粘性多孔介质中，在各种流动，润湿性和坚实的流变条件下的过渡。我们证明了存在由非二维数字控制的三种不同的物质故障制度，这些数字量化了多孔培养基中粘性，毛细管和结构力的平衡。
Detailed understanding of the couplings between fluid flow and solid deformation in porous media is crucial for the development of novel technologies relating to a wide range of geological and biological processes. A particularly challenging phenomenon that emerges from these couplings is the transition from fluid invasion to fracturing during multiphase flow. Previous studies have shown that this transition is highly sensitive to fluid flow rate, capillarity, and the structural properties of the porous medium. However, a comprehensive characterization of the relevant fluid flow and material failure regimes does not exist. Here, we used our newly developed Multiphase Darcy-Brinkman-Biot framework to examine the transition from drainage to material failure during viscously-stable multiphase flow in soft porous media in a broad range of flow, wettability, and solid rheology conditions. We demonstrate the existence of three distinct material failure regimes controlled by non-dimensional numbers that quantify the balance of viscous, capillary, and structural forces in the porous medium.
