Article
Engineering, Multidisciplinary
Dongmin Wang, Gaoshuai Lin
Summary: There are five widely used contact angle schemes in the pseudopotential lattice Boltzmann (LB) model for simulating the wetting phenomenon. In this paper, the numerical stability and accuracy of these schemes are clarified for the first time, showing that the GF scheme is the most stable and accurate for simulating static wetting or dynamic wetting, while the PB scheme is the least suggested for both types of simulations.
CMES-COMPUTER MODELING IN ENGINEERING & SCIENCES
(2023)
Review
Chemistry, Physical
Jianchao Cai, Yin Chen, Yang Liu, Shuang Li, Chenhao Sun
Summary: This review critically summarizes the fundamentals and concepts of various capillary imbibition models within different geometries over the past 100 years. It discusses the applications of these models and proposes a universal model based on dynamic wetting conditions and equivalent cylindrical geometry. Future research is suggested to focus on analyzing corner flow dynamics, wetting fluid snap-off, capillary rise of non-Newtonian fluids, and employing accurate physical simulation methods for capillary-driven flow processes.
ADVANCES IN COLLOID AND INTERFACE SCIENCE
(2022)
Article
Energy & Fuels
Chao-Zhong Qin, Xin Wang, Huaijun Zhang, Mahmoud Hefny, Han Jiang, Jian Tian, Wen Deng
Summary: Spontaneous imbibition is a crucial process in various subsurface and industrial applications involving two-phase flow. However, the lack of an efficient and reliable pore-scale model has hindered our understanding of how pore-filling events during spontaneous imbibition affect average transport properties and the trapping of nonwetting fluids. In this study, we experimentally verify a computationally efficient image-based dynamic pore-network model for spontaneous imbibition and conduct case studies on Nubian sandstone. Our findings reveal that the widely used Young-Laplace equation significantly overestimates the average capillary pressure in cocurrent spontaneous imbibition due to the lack of parameterization for dynamic pore-filling and air entrapment. Based on our numerical results, we elucidate the competition of pore-filling events at different viscosity ratios of wetting and nonwetting fluids. Our model provides a valuable tool for predicting spontaneous imbibition quantitatively in geological formations and bridges the gap between pore-scale flow dynamics and the Darcy theory of spontaneous imbibition.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2022)
Article
Environmental Sciences
Dag Chun Standnes, Per Fotland
Summary: The study analyzed the capillary drainage, imbibition, and hysteresis pressure in two-phase porous media systems at different temperatures using thermodynamic principles. The results showed that increasing temperature led to a decrease in capillary drainage pressure, an increase in capillary imbibition pressure, and a decrease in the hysteresis capillary pressure term. These findings supported the hypothesis that the thermodynamic approach can account for the temperature dependency of capillary pressure in porous media, with the entropy term contributing to the hysteresis phenomenon.
WATER RESOURCES RESEARCH
(2021)
Article
Mechanics
Subhashis Patari, Imdad Uddin Chowdhury, Jitendra Kumar, Pallab Sinha Mahapatra
Summary: In recent decades, there has been an increasing use of paper-based microfluidic devices, leading to a focus on liquid flow through paper substrates. To predict this flow, an analytical and numerical model was constructed, considering various factors. The developed models were validated through experiments, showing good agreement.
Review
Chemistry, Physical
Nikolai Kubochkin, Tatiana Gambaryan-Roisman
Summary: This review summarizes the progress in studying the wetting of corner-containing geometries, including isolated corners, rectangular channels, and confined angular geometries. It is believed to be of interest to readers from fields such as the oil and gas industry, space science, biophysics, and microfluidics.
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2022)
Article
Engineering, Petroleum
Aymen Alramadhan, Yildiray Cinar
Summary: This paper presents an experimental study investigating the links between imbibition capillary pressure (P-ci), pore systems, and mineralogy in carbonate reservoirs undergoing waterflood. The study outlines a systematic workflow to analyze the data and determine the impact of mineralogy and pore systems on P-ci. Findings suggest that certain minerals in the rock composition can affect P-ci and that medium permeability bimodal samples may have better waterflood imbibition efficiency compared to high-permeability samples.
Article
Engineering, Petroleum
Guoqing Xu, Yujiao Han, Yun Jiang, Yang Shi, Mingxian Wang, XingHang Zeng
Summary: This study investigates the mechanism of imbibition on oil recovery by conducting a series of experiments to simulate residual oil saturation status. The experimental results show a positive effect of imbibition on reducing residual oil levels, helping to understand the behavior of spontaneous imbibition during shut-in periods.
Article
Engineering, Aerospace
Yu Huang, Qianqian Lu, Wei Shao, Li Liu, Chuan Ding, Jian Ruan
Summary: This paper studies the outlet pressure and flow ripples of the parallel 2D piston pump used in the aerospace field. By numerical simulation and optimizing the pump's geometry, the outlet pressure ripple is effectively reduced. However, further methods need to be explored to reduce the outlet pressure and flow ripples.
Article
Engineering, Marine
Yukun Feng, Zuogang Chen, Yi Dai, Lianzheng Cui, Zheng Zhang, Ping Wang
Summary: This study conducted a multi-objective design optimization of a bow thruster using both experimental and numerical analyses. By changing the chamfer form and the position of the anti-suction tunnel, the optimization aimed to improve propulsion efficiency, reduce fluctuating pressure, and balance the pressure difference on the hull. Model tests and numerical simulations were performed, and a surrogate model was built using the Support Vector Regression algorithm. The non-dominated sorting genetic algorithm II was utilized for the three-objective optimization. The results showed a significant reduction in fluctuating pressure amplitude after optimization, but the propeller propulsion efficiency was slightly lower than the original hull.
Article
Physics, Multidisciplinary
J. M. Sanchez Huerta, A. Ortiz Gomez
Summary: This study investigates the dynamics of fluid flow through non-rectilinear capillaries using theoretical and experimental approaches. Experimental validation of the theoretical model reveals the dependence of capillary geometry, viscosity, and surface tension on temperature effects. The theoretical and experimental results are well correlated.
Article
Materials Science, Ceramics
Zhengwei Li, Zhiwu Xu, Boxu Ren, Jiuchun Yan
Summary: In this study, porous Si3N4 ceramics were successfully soldered using Sn9Zn2Al solder through sonocapillary and cavitation. The results showed that the solder could quickly wet the ceramics and form a tight bond. A geometric model was used to analyze the infiltration mechanism of the solder, showing that acoustic pressure played a key role in the wetting process. Additionally, the wetting mechanism of the solder to the ceramic was analyzed based on cavitation bubble dynamics calculation.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Hyeong Jun Lee, Sanghyuk Park, Jong Bin Kim, Shin-Hyun Kim
Summary: Colloidal lithography is used to create regular micro- and nano-patterns by employing colloidal crystals as masks. By utilizing the capillary wetting effect and photoresists, 3D structures with undulated surfaces can be designed.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Pharmacology & Pharmacy
Philipp Grohn, Stefan Heinrich, Sergiy Antonyuk
Summary: In the pharmaceutical industry, the coating of particles is a widely used technique to obtain desired surface modifications. Computational Fluid Dynamics (CFD) coupled with the Discrete Element Method (DEM) is used to investigate the wet particle dynamics in a fluidized bed rotor granulator (FBRG). The results show that the properties of the coating liquid, such as viscosity, liquid loading, and surface tension, significantly affect the particle behavior in the FBRG.
Article
Construction & Building Technology
Vladimir Zmrhal, Tomas Matuska
Summary: This article investigates the hydraulic behavior of capillary mats used for high-temperature cooling or low-temperature heating of buildings. Experimental measurements are used to determine the pressure loss of the capillary mats in relation to water flow rate and geometrical arrangement. The results are compared with manufacturer data, showing significant differences. CFD simulation is used to model the pressure losses, focusing on friction losses during laminar flow and local losses during flow regime changes.
JOURNAL OF BUILDING ENGINEERING
(2022)
