Article
Thermodynamics
Jie Yi, Lingli Liu, Zhaohui Xia, Junjian Wang, Yu Jing, Lijiang Duan
Summary: This study investigated two-phase flow in rough-walled fractures with different surface wettability using an improved lattice Boltzmann model and a discrete fracture network model. The impact of contact angle and fracture aperture on fluid flow distribution, velocity field, and relative permeability curves was clarified. It was found that fluid relative permeability in rough-walled fractures can exhibit instabilities due to wettability-related microscale fluid distribution.
APPLIED THERMAL ENGINEERING
(2021)
Article
Mechanics
Haidong Shi, Qingyuan Zhu, Zhangxin Chen, Jing Li, Dong Feng, Shengting Zhang, Jiawei Ye, Keliu Wu
Summary: Water-gas flow in heterogeneous porous media was simulated using a direct simulation method and the phase-field method. The study found that forced imbibition showed stable displacement with local capillary fingering. Capillary valve effects acted as both driving and resistance forces during the process. Drainage showed viscous fingering and capillary fingering simultaneously. The water-gas front advanced faster during drainage due to smaller viscous forces. The final phase saturation of imbibition was similar under different capillary numbers, but the area of each type differed. The larger the capillary number, the higher the final displacement efficiency.
Article
Engineering, Civil
Chunlei Ma, Yun Chen, Xiaoliang Tong, Guowei Ma
Summary: A piecewise equivalent model is developed to characterize the relationship between primary and secondary roughness and flow rate inside the fracture, setting the fractal dimension 2.0 as the piecewise point. The rough-walled fracture influenced by the primary and secondary roughness is quantitatively evaluated based on the wavelet transform and the power spectrum method. Secondary roughness greatly enhances flow non-linearity when the fracture fractal dimension exceeds 2.0, while it has little effect on non-linear flow behavior with the fracture fractal dimension less than 2.0.
JOURNAL OF HYDROLOGY
(2023)
Article
Chemistry, Physical
Alexandre Epalle, Mathilde Catherin, Manuel Cobian, Stephane Valette
Summary: To understand the relationship between topography and wetting, it is not sufficient to study the contact angle. This study proposes a numerical approach to characterize the wetting behavior on textured surfaces, overcoming experimental limitations. The simulations successfully capture the wetting state and contact angle, allowing for the quantification of the liquid-solid interface and impregnation within textures.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Thermodynamics
Yinglei Guo, Yuhua Lai, Shuai Wang, Lin Wang
Summary: The lattice Boltzmann method is used to investigate the bubble dynamics on the vertical rough heating wall, considering the conjugate heat transfer process. The results reveal the interaction between bubble dynamics and boiling heat transfer characteristics. It is found that the bubble motion and gas-liquid interface are influenced by the wall thermal conductivity, and the wall mixed wettability has an impact on the conjugate heat transfer behaviors.
APPLIED THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Shakeel Ahmad, Huaqiang Liu, Yu Shi, Jingtan Chen, Jiyun Zhao
Summary: The study investigates the nucleation site interactions between two hydrophobic cavities on a hydrophilic surface using a two-dimensional pseudopotential phase-change lattice Boltzmann method. The research shows that there is an optimal pitch distance for a mixed wettability surface, where heat flux and heat transfer coefficient are highest due to hydrodynamic interaction intensity and low thermal interaction intensity. Additionally, bubble nucleation mechanism and time differ among surfaces.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Yu Song, Xingsen Mu, Jiajun Wang, Shengqiang Shen, Gangtao Liang
Summary: Numerical simulations were conducted to study channel flow boiling on hybrid wettability surfaces using a two-dimensional lattice Boltzmann method coupled with a thermal phase transition model. The heat transfer performance between single wettability surfaces and hybrid wettability surfaces was compared, and it was found that the heat flux on the hybrid surface was higher. The impacts of contact angle and geometrical parameters on heat flux were analyzed, and the 30 degrees /120 degrees hybrid wettability surface showed the best heat transfer performance.
APPLIED THERMAL ENGINEERING
(2023)
Article
Engineering, Chemical
Zhilin Cheng, Zhengfu Ning, Dong-Hun Kang
Summary: By simulating water transport at the nanoscale, this study investigates the flow characteristics and transport capacity under different wettability and surface roughness conditions. The results demonstrate that fluid velocity and pressure distributions along the flow direction are greatly influenced by changes in wettability and surface roughness.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Environmental
Junling Zheng, Xiaokun Liu, Yi Jin, Jiabin Dong, Qiaoqiao Wang
Summary: The study clarifies the triple effects of surface geometries on the advection-diffusion process and establishes a model to consider the joint effect of hydraulic tortuosity, surface tortuosity, and stationary roughness in rough fractures. The results show the significant influence of self-affine properties of fractures on the advection-diffusion process.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Mechanics
Qing He, Shi Tao, Xiaoping Yang, Weijian Lu, Zongrun He
Summary: The study introduces the ghost-cell immersed boundary method into DUGKS to handle curved boundaries. Three typical test cases are simulated to validate the accuracy and feasibility of the new IDW-GC-DUGKS method for gaseous microflows.
Article
Engineering, Multidisciplinary
Chen Zhou, Wen-yuan Wang, Ke-xin Chen, Ze-jian Chen, Jongwon Jung, Shuai Zhang, Yun-min Chen, Bate Bate
Summary: The role of wettability, characterized by contact angle, in two-phase immiscible phases displacement is investigated using the color gradient lattice Boltzmann method. The study finds that the saturation is related to the contact angle under different viscosity ratios and capillary numbers.
JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE A
(2022)
Article
Energy & Fuels
K. Sawayama, T. Ishibashi, F. Jiang, T. Tsuji, O. Nishizawa, Y. Fujimitsu
Summary: By investigating the microscopic flow characteristics of fractures, a relationship between fracture permeability and formation factor was established, potentially allowing for monitoring of subsurface hydraulic activities at a larger scale through resistivity observations.
Article
Engineering, Multidisciplinary
Hao Huang, Minghui Guo, Congyi Wu, Youmin Rong, Yu Huang, Guojun Zhang
Summary: By establishing a lattice Boltzmann method (LBM) model, we investigate the effects of nanostructure geometry on wettability and optimize the geometry to achieve a superhydrophobic surface. The LBM model accurately reproduces contact angles and provides insights into the wettability mechanism.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Environmental Sciences
Jonas Bentz, Ravi A. Patel, Pascal Benard, Alice Lieu, Adrian Haupenthal, Eva Kroener
Summary: Wettability is an important parameter for determining hydrology in porous media, but the influence of spatially heterogeneous wettability distributions is not well understood. This study used numerical simulations to investigate the impact of spatially heterogeneous wettability patterns on infiltration in porous media. The results show that the specific location of wettability patterns within the pore space determines hydraulic dynamics and water repellency.
Article
Engineering, Civil
Yong Luo, Zhenyu Zhang, Yakun Wang, Jan Nemcik, Jiahua Wang
Summary: The influence of roughness, aperture, and asperity irregularity on fluid flow regimes in rough rock fractures was investigated through experimental and numerical studies. It was found that there are three different fluid flow regimes in the fractures, including pre-linear flow, linear Darcy's flow, and post-linear flow. The pre-linear flow is caused by the slippage effect of water-fracture interfaces, while the post-linear flow is mainly due to inertial effects.
JOURNAL OF HYDROLOGY
(2022)
Article
Engineering, Chemical
Jianlin Zhao, Feifei Qin, Qinjun Kang, Dominique Derome, Jan Carmeliet
Summary: In this work, a hybrid method coupling a pseudo-potential lattice Boltzmann model (LBM) and a pore network model (PNM) is proposed to simulate drying in porous media. By subdividing the porous medium into pore regions and using different models for different types of pores, the hybrid method combines the accuracy of LBM and the efficiency of PNM, leading to significant reduction of computation time in larger porous systems.
Review
Thermodynamics
Li Chen, An He, Jianlin Zhao, Qinjun Kang, Zeng-Yao Li, Jan Carmeliet, Naoki Shikazono, Wen-Quan Tao
Summary: This review summarizes the recent advances and challenges in pore-scale modeling, discussing its practical applications in geoscience, polymer exchange membrane fuel cells, and solid oxide fuel cells. Notable results from pore-scale modeling are presented, while the challenges facing the development of pore-scale models are also discussed.
PROGRESS IN ENERGY AND COMBUSTION SCIENCE
(2022)
Article
Environmental Sciences
Anzy Lee, Antoine F. Aubeneau, M. Bayani Cardenas, Xiaofeng Liu
Summary: The study investigates the impact of cobble clusters embedded in a sand bed on water flow and exchange. Results show that the spacing and embeddedness of cobbles affect hyporheic exchange, with increased exchange and longer travel time when cobbles protrude more into the channel.
WATER RESOURCES RESEARCH
(2022)
Article
Energy & Fuels
Xiongyu Chen, Nicola Tisato, Peter B. Flemings, Nicolas Espinoza
Summary: In this study, depressurization and thermal stimulation experiments were conducted on hydrate-bearing sand, and X-ray computed tomography was used to model fluid flow and calculate gas flow properties during hydrate dissociation. The results showed that partial dissociation by depressurization starts at the hydrate-fluid interface and leads to secondary hydrate formation before final dissociation. In contrast, partial dissociation by thermal stimulation primarily occurs at the mineral-hydrate interface. Estimations of gas effective permeability suggest that a Corey relative permeability model with a hydrate saturation exponent of n = 3.4 and a gas saturation exponent of n(g) = 2.6 can be used to predict fluid flow in methane hydrate-bearing sediments.
Article
Energy & Fuels
Mohamed Mehana, Javier E. Santos, Chelsea Neil, James William Carey, George Guthrie, Jeffery Hyman, Qinjun Kang, Satish Karra, Mathew Sweeney, Hongwu Xu, Hari Viswanathan
Summary: This article summarizes important findings and methods regarding shale reservoirs to improve hydrocarbon extraction efficiency and minimize environmental impact. By integrating fundamental knowledge and machine learning, a pathway to enhance model prediction capabilities is outlined, and science-based workflows and platforms for pressure-drawdown optimization, real-time management, and uncertainty quantification are presented.
Article
Energy & Fuels
Mohamed Mehana, Fangxuan Chen, Mashhad Fahes, Qinjun Kang, Hari Viswanathan
Summary: This study modeled a hydraulic fracture stage and found that geochemical interactions have a positive impact on the fate of reservoir fluids and well performance. Sea water shows promise as an alternative fracturing fluid, and lower-saline connate water improves well performance.
Review
Energy & Fuels
Jianlin Zhao, Junjian Wang, Guangqing Zhang, Dawei Zhou, Li Chen, Hari Viswanathan, Qinjun Kang
Summary: Shale gas reservoirs are an important unconventional resource with unique characteristics. The ultrasmall pore sizes in shale induce the nanopore confinement effect and gas adsorption. The lattice Boltzmann method (LBM) has been modified to simulate gas flow and adsorption in shale rocks, and four types of LBM models have been developed for this purpose. LBM can efficiently estimate shale gas permeability, describe pore-scale flow behaviors, and address the influence of gas adsorption, but challenges remain in its application for shale gas flow and adsorption simulations.
Article
Water Resources
Fu Liao, M. Bayani Cardenas, Xiaobing Chen, Guangcai Wang
Summary: Groundwater discharge flux into rivers is important for the conservation and management of aquatic ecosystems and resources. This study used Rn-222 as a tracer to estimate groundwater discharge into the Lower Colorado River in Austin, Texas, USA. The results showed that Rn-222 in river water and groundwater changed synchronously over a flood cycle, and the estimated groundwater discharge ranged from negative values to 1570 m³/h. The study also emphasized the importance of monitoring Rn-222 in near-stream groundwater to accurately characterize dynamic groundwater discharge.
HYDROLOGICAL PROCESSES
(2023)
Article
Engineering, Civil
Jianlin Zhao, Feifei Qin, Linlin Fei, Chaozhong Qin, Qinjun Kang, Dominique Derome, Jan Carmeliet
Summary: In this study, an advanced modified interacting capillary bundle model (MICBM) is developed to simulate imbibition dynamics in a strongly wetting square tube. The wetting corner film development is found to be less significant compared to the main meniscus flow under different conditions. Parameters such as viscosity ratio between wetting and non-wetting fluids, driving force, gravity, and contact angle are shown to influence the development of the corner film.
JOURNAL OF HYDROLOGY
(2022)
Article
Mechanics
Zi Wang, Li Chen, Hangkai Wei, Zhenxue Dai, Qinjun Kang, Wen-Quan Tao
Summary: This study simulated the reactive transport processes in porous media with dissolution of solid structures using the lattice Boltzmann method. Six dissolution patterns were identified under different Peclet and Damkohler numbers. The increase in heterogeneity intensified the wormhole phenomena and led to higher permeability. The study also found that permeability is more sensitive to the alteration of structural heterogeneity compared to specific surface area, and it is challenging to propose a general formula between permeability and porosity under different reactive transport conditions and structural heterogeneity. The use of deep neural network showed promising potential in predicting the complicated variations of permeability in heterogeneous porous media with dissolution of solid structures.
Article
Energy & Fuels
Min Liu, Qinjun Kang, Hongwu Xu, Joshua White
Summary: This study investigated the dissolution of uranium dioxide (UO2) under geological repository conditions using a three-dimensional thermal-chemical reactive transport model. The model considered the transport of chemical species, thermal conduction, and chemical dissolutions in UO2 fuel pellets. The study simulated UO2 dissolution at low and high temperatures, accounting for the changes in aqueous uranium species. The model can be used as a predictive tool for various applications.
JOURNAL OF ENERGY ENGINEERING
(2023)
Article
Mechanics
Feifei Qin, Linlin Fei, Jianlin Zhao, Qinjun Kang, Dominique Derome, Jan Carmeliet
Summary: A 2-D double-distribution lattice Boltzmann method (LBM) is implemented to study the isothermal drying process of a colloidal suspension considering the local effects of nanoparticles. The model is validated by comparing with experimental results for drying of suspended colloidal droplet and a colloidal suspension in a capillary tube. The influence of three local nanoparticle effects on drying dynamics, deposition process and final configurations is analyzed, and a unified relation is proposed and verified.
JOURNAL OF FLUID MECHANICS
(2023)
Editorial Material
Geosciences, Multidisciplinary
Susan Trumbore, Ana Barros, Thorsten Becker, M. Bayani Cardenas, Eric Davidson, Nicolas Gruber, Eileen Hofmann, Mary Hudson, Tissa Illangasekare, Sarah Kang, Alberto Montanari, Marcos Moreno, Francis Nimmo, Larry Paxton, Vincent J. M. Salters, David Schimel, Bjorn Stevens, Hang Su, Donald Wuebbles, Peter Zeitler, Binzheng Zhang
Summary: The editorial board of AGU Advances expresses gratitude to the individuals who reviewed manuscripts for the journal in 2022. Thanks to the 131 reviewers who contributed to AGU Advances in 2022.
Article
Environmental Sciences
Julia A. Guimond, Cansu Demir, Barret L. Kurylyk, Michelle A. Walvoord, James W. Mcclelland, M. Bayani Cardenas
Summary: Groundwater discharge to the ocean along Arctic coastlines plays a significant role in carbon budgets and water quality. This study investigates the magnitude and drivers of groundwater discharge to Alaska's Beaufort Sea coast using unique coastal Arctic groundwater timeseries data. The results reveal temporally variable groundwater fluxes driven by wind-driven lagoon water level changes, with implications for nearshore biogeochemistry.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Review
Energy & Fuels
Jianlin Zhao, Junjian Wang, Guangqing Zhang, Dawei Zhou, Li Chen, Hari Viswanathan, Qinjun Kang
Summary: This review examines four lattice Boltzmann models developed for simulating shale gas flow/adsorption and discusses the current challenges in applying these models.
