Immiscible displacement in porous media is common many practical applications. Under quasi-static conditions, the process significantly affected by disorder of and wettability pore surface. Previous studies have focused on effects, but impact interplay between contact angle not well understood. Here, we combine microfluidic experiments pore-scale simulations with theoretical analysis to study from weak imbibition strong drainage. We define probability overlap link menisci advancements...

Abstract Fluid invasion into porous media to displace a more viscous fluid exhibits various displacement patterns. For such unfavorable displacements, previous works overlooked the dynamic effect of force on pattern transitions at low flow rates. Consequently, crossover from compact capillary fingering under wetting conditions remains unclear. Here, we establish theoretical model capture affected by wettability and rate. We rigorously quantify find that critical contact angles for decrease...

Abstract The flow of multiple immiscible fluids in disordered porous media is important many natural processes and subsurface applications. pore‐scale disorder affects the fluid invasion pathways significantly induces transitions displacement patterns media. Extensive studies focus on pattern affected by under quasistatic or dynamic conditions, but how controls from capillary‐dominated regime to viscous‐dominated not well understood. Here, we combine microfluidic experiments theoretical...

Abstract Fluid‐fluid displacement in porous media is common many natural and engineering settings. Extensive studies investigated the transition of patterns, but direct prediction efficiency using pore structure lacking. Here, we propose a method to directly predict with no need solve Navier‐Stokes Hagen‐Poiseuille equations ordered media. The predictive origins from pore‐scale filling events, which can be divided into two directions such as bulk flow direction transverse direction....

There is a need for molecular-structure-based predictive models that guide the molecular design of materials with desired properties. Herein, we developed general model based on group-contribution (GC) theory and vibrational predicts thermal conductivity different types liquids which are used as working media in energy conversion environmental protection, including three organic liquids, ionic their mixtures. We also derive pressure dependencies conductivities these first time. The GC...

Abstract The capillary pressure curve is essential for predicting multiphase flow processes in geological systems. At low saturations, wetting films form and become important, but how control this remains inadequately understood. In study, we combine microfluidic experiments with pore‐network modeling to investigate the impact of corner‐bridge on porous media. Using a CMOS camera confocal laser scanning microscopy, directly observe under quasi‐static drainage displacement, revealing that...

The breakup processes and droplet characteristics of a liquid jet injected into low-speed air crossflow in the finite space were experimentally investigated. recorded by high-speed photography, phase-Doppler anemometry (PDA) was employed to measure sizes velocities. Through instantaneous image observation, mode could be divided bump breakup, arcade bag modes, experimental regime map primary summarized. transition boundaries between different modes found. gas Weber number (Weg) considered as...

Multiphase flow in porous media is a common process numerous engineering applications. While studies have been conducted to investigate the impact of conditions, fluid properties, and wettability, influence geometry on remains poorly understood. Here, theoretical model proposed directly forecast displacement patterns across wide range porosity disorder. This built upon revelation that overlap event stabilizes invasion front, allowing us predict by computing probability event. A value 1...

In several industries, the handling of fluid-filled micropipes is common. New-brand structures are increasingly being manufactured using advanced materials. This article tackles one crucial dynamic analyses that an micropipe encounters. The dynamics a graphene nanoplatelets-reinforced (GPL micropipe) under pulsating laminar flow for first time examined. Euler-Bernoulli beam model follows modified couple stress theory (MCST) and von-Karman's nonlinear strain to formulate problem. impression...

Abstract Cell culture titres are expected to increase still further over the forthcoming years. This imposes challenges for downstream processing including potential need use larger volumes of chromatography resins. Such a move could create throughput bottlenecks because compressible nature many commercially available resins, which makes operation columns with diameters beyond 2 m infeasible due resin collapse. The cylindrical inserts negligible thickness has been proposed in literature as...

Abstract Chromatography plays an important role in the downstream processing of proteins. Over past years, there has been a steady move toward adoption more rigid, porous particles to combine ease manufacture with increased levels productivity. The latter is still constrained by onset compression where level wall support becomes incapable withstanding flow‐induced particle drag. In this study, we investigate how, installation cylindrical column inserts, it possible enhance support....

A novel method for the regeneration of nitrobenzene-exhausted granular activated carbon using dielectric barrier discharge (DBD) was proposed in this study. The influence several parameters including voltage, frequency, and plasma medium on efficiency were studied. Under optimum conditions, can reach over 80% remain nearly stable after 5 times cycle. texture characteristic surface chemistry Granular Activated Carbon (GAC) samples also investigated. Analysis shows that pore volume specific...

The displacement of immiscible fluids in porous media is common many natural processes and engineering applications. Under quasi-static conditions, the affected by geometry wetting condition. In an ordered medium, i.e., pore size maintained constant transverse direction changes monotonously from inlet to outlet; previous works always focused on gradient, but role wettability not well-understood. Here, we investigate pattern transition with positive negative gradients under condition...