Article
Engineering, Chemical
William B. Krantz, Michael Dy Cham Lua, Joselieto Luy Absalon, Babu Narayanswamy
Summary: Determining pore size is crucial for evaluating the performance of porous materials like membranes. Evapoporometry, a relatively new characterization method based on the Kelvin equation, predicts vapor-pressure reduction of a volatile wetting liquid in the pores. In this paper, the development of an automated evapoporometer instrument is described, which eliminates the need for user intervention once the sample is placed in the test cell.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Thermodynamics
Xinjian Chen, Junwei Li, Xu He, Dan Zhao, Ningfei Wang
Summary: This paper investigates the effects of ordered porous ceramics and pore size on the stability, thermal performance, and emission performance of meso-scale burners. The results show that ordered porous ceramics enhance heat transfer, reduce NOx emissions, and have potential applications in micro thermoelectric and thermophotovoltaic systems.
APPLIED THERMAL ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Juan Zheng, Zhen Yang, Huabin Gao, Xiuying Lai, Xiao Wu, Yaolong Huang
Summary: The paper investigates the deformation micro-response of saturated remolded cohesive soil through experiments and nuclear magnetic resonance (NMR) testing. The results show that the pore diameters gradually decrease during loading, resulting in denser and more uniform pores. The loading rate only affects the intermediate state of the soil sample, while the final state is determined by the initial state. Drainage consolidation is complete after a certain dead load time.
SCIENTIFIC REPORTS
(2022)
Article
Forestry
Dessie T. Tibebu, Stavros Avramidis
Summary: Understanding the fractal dimension of wood pores is essential for studying its macroscopic properties. This research used the pore size distribution to explore the fractal dimension of softwoods and hardwoods. The results revealed significant differences in pore size distribution and fractal dimension values for different pore sizes.
Article
Chemistry, Physical
Zongyu Gu, Remi Goulet, Pierre Levitz, Dris Ihiawakrim, Ovidiu Ersen, Martin Z. Bazant
Summary: The study proposes a set of simple formulas to interpret mercury cyclic porosimetry measurements, breaking down hysteresis in the data into connectivity effects and contact-angle hysteresis. The parameter alpha helps correct the overestimation of smaller pores due to connectivity effects, making mercury cyclic porosimetry a standard procedure for measuring connectivity in porous media.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Construction & Building Technology
Song Jin, Jikai Zhou, Xiyao Zhao, Lu Sun
Summary: Cementitious materials have a complex pore structure, with microscale pores having a significant impact on material strength. The influence function shows that the effect of pores on strength increases with pore size, particularly at larger sizes. Microscale pores should be avoided to improve material strength.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Soil Science
Jocenei A. T. de Oliveira, Fabio A. M. Cassaro, Luiz F. Pires
Summary: This study used X-ray micro-tomography images and a computational algorithm based on mercury intrusion porosimetry to evaluate the impact of different agricultural management systems (CT, MT, NT) on soil structure. The results showed significant changes in pore size distribution under CT and MT, with CT and NT being the main drivers of changes in soil porosity. The computational algorithm proved valuable for quantifying pore size distribution and modifications induced by different management systems.
SOIL & TILLAGE RESEARCH
(2021)
Article
Engineering, Geological
Jeevan Joseph, Shetty Rakshith, D. N. Singh, C. S. Tang
Summary: This article introduces the methods and techniques for determining the unsaturated hydraulic conductivity of various porous media in the field of geotechnical and agriculture engineering. It also points out the limitations and challenges of existing methodologies. To overcome these limitations, a novel methodology, (MI-EC)k(u), is proposed and its robustness and ease of use are demonstrated through experiments.
Article
Thermodynamics
Libin Tan, Yuejin Yuan, Zhe Zhao, Yingying Xu, Yueding Yuan
Summary: Drying shrinkage is a complex process influenced by the micro-pore structure of high-moisture porous media. This study established a pore-scale model and conducted pore network simulations to analyze the effects of micro-pore structure characteristics on heat-moisture and stress-strain distributions during drying. The simulation results showed good agreement with experimental measurements and revealed the phenomena of dry spots, wet spots, irregular drying front, and asymmetric shrinkage. Capillary stress was identified as a key factor affecting drying shrinkage.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Mechanics
Otman Maalal, Marc Prat, Rene Peinador, Didier Lasseux
Summary: Fluid-fluid displacement porosimetry is a method for determining the pore size distribution of a porous medium using cylindrical parallel tubes. It is effective for anisotropic structures similar to the representation used, but interpretation becomes more difficult for complex structures. The characterization of the pore size distribution can be significantly improved by considering it as an inverse optimization problem.
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
(2022)
Article
Physics, Multidisciplinary
Amin Dehkharghani, Nicolas Waisbord, Jeffrey S. Guasto
Summary: Bacterial motility is crucial for their survival in porous environments, where they mediate important biogeochemical processes. This study tracks the movement of bacteria through microfluidic porous media with different geometries, and finds that ordered and disordered media have different impacts on bacterial motility. An effective mean free path is identified as the key parameter controlling bacterial transport.
COMMUNICATIONS PHYSICS
(2023)
Article
Engineering, Chemical
Vi T. Nguyen, Ngoc H. Pham, Dimitrios V. Papavassiliou
Summary: This study examined the relationship between velocity magnitude distribution and pore size distribution in different porous media. The results showed that both velocity magnitude and pore size followed the same distribution pattern. This finding has implications for predicting velocity distribution in porous media and controlling velocity by manipulating pore structure.
Article
Engineering, Chemical
Chao Liu, Xiaolong Lu, Ronghua Ma, Jie Gu, Kai Ren, Shuyun Zheng, Shaozhe Zhang, Ziqiang Liu
Summary: In order to improve the sieving accuracy of material separation, this study developed a porous membrane with tailored pore size and narrow pore size distribution. By grafting 1,3-bis (tris(hydroxymethyl)methylamino) propane (Bis-Tris propane) onto the PVDF-CTFE main chain, the membranes with thin and nonporous skin layers were prepared through non-solvent-induced phase separation (NIPS). The reactive swelling effect of small molecular glycine and amino acids with different molecular sizes was utilized to induce the formation of through holes, resulting in membranes with single pore size distribution and enhanced water flux.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Hooman Chamani, Takeshi Matsuura, Dipak Rana, Christopher Q. Lan
Summary: A novel mathematical model is introduced in this study to evaluate the pore size distribution of membranes, requiring fewer experimental data points for optimization and eliminating the need for experiments with dry membranes. The model shows excellent agreement with conventional methods in estimating pore size distributions for commercial membranes.
Article
Chemistry, Multidisciplinary
Elizabeth Barsotti, Mohammad Piri
Summary: The research indicates that the absence of clear capillary condensation in the isotherms of most naturally occurring nanoporous media is due to the broad pore size distribution of the materials. By mixing different sizes of adsorbents, it was found that the phase behavior in different pore sizes is additive, suppressing the appearance of capillary condensation. By comparing isotherms of mixtures to those of single pore sizes, correlations using the Lorentzian function were developed to determine porosity and fluid density straightforwardly.
Article
Automation & Control Systems
Saptarshee Mitra, Antonio Rodriguez de Castro, Mohamed El Mansori
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2018)
Article
Water Resources
Antonio Rodriguez de Castro
ADVANCES IN WATER RESOURCES
(2019)
Article
Engineering, Chemical
Antonio Rodriguez de Castro, Mehrez Agnaou
TRANSPORT IN POROUS MEDIA
(2019)
Article
Engineering, Manufacturing
Saptarshee Mitra, Antonio Rodriguez de Castro, Mohamed El Mansori
JOURNAL OF MANUFACTURING PROCESSES
(2019)
Article
Chemistry, Physical
Mohammad Javad Shojaei, Antonio Rodriguez de Castro, Yves Meheust, Nima Shokri
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2019)
Article
Engineering, Chemical
Antonio Rodriguez de Castro, Mehrez Agnaou, Azita Ahmadi-Senichault, Abdelaziz Omari
TRANSPORT IN POROUS MEDIA
(2019)
Article
Computer Science, Interdisciplinary Applications
Antonio Rodriguez de Castro, Mehrez Agnaou, Azita Ahmadi-Senichault, Abdelaziz Omari
COMPUTERS & CHEMICAL ENGINEERING
(2020)
Article
Engineering, Industrial
Saptarshee Mitra, Mohamed El Mansori, Antonio Rodriguez de Castro, Marius Costin
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2020)
Review
Automation & Control Systems
Antonio Rodriguez de Castro
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2020)
Article
Computer Science, Interdisciplinary Applications
Antonio Rodriguez de Castro, Mehrez Agnaou, Azita Ahmadi-Senichault, Abdelaziz Omari
COMPUTERS & CHEMICAL ENGINEERING
(2020)
Article
Water Resources
Antonio Rodriguez de Castro, Azita Ahmadi-Senichault, Abdelaziz Omari
ADVANCES IN WATER RESOURCES
(2020)
Article
Engineering, Chemical
Terence Emery Mackaya, Azita Ahmadi-Senichault, Abdelaziz Omari, Antonio Rodriguez de Castro
Summary: The present work investigates the flow rate/pressure gradient relationship for yield stress fluids through non-circular capillaries, proposing empirical relationships for both Bingham and Herschel-Bulkley fluids. Numerical simulations show good agreement between the predicted empirical relationships and results from literature, allowing for easy prediction of total flow rate in bundles of non-circular capillaries. This has implications for processing experimental data based on capillaries with non-circular cross-sections in yield stress fluid porosimetry method.
TRANSPORT IN POROUS MEDIA
(2021)
Article
Chemistry, Physical
Antonio Rodriguez de Castro, Benoit Goyeau
Summary: This study investigates the flow of shear-thinning fluids in 3D porous media using pore network modeling, focusing on the relationships between local and macroscopic viscosities. The results show that Darcy-scale viscosity can be accurately calculated as the flow-rate weighted average of local viscosities in the investigated media. In addition, the velocity maps provided by the proposed pore network flow simulations are useful for assessing the reduction in hydraulic tortuosity compared to the flow of a Newtonian fluid.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Antonio Rodriguez Castro, Azita Ahmadi-Senichault, Abdelaziz Omari
Summary: The study achieved substantial progress in developing a clean alternative to MIP using yield stress fluids in porous samples. By comparing YSM and MIP tests on artificial and natural porous samples, it was found that there is general agreement between the two methods.
HYDROGEOLOGY JOURNAL
(2021)
Article
Engineering, Chemical
Antonio Rodriguez de Castro, Benoit Goyeau
Summary: Knowledge of pore-scale physics in underground multiphase flows is crucial for efficient soil remediation methods. This study presents numerical simulations investigating the displacement of a contaminant by a shear-thinning fluid and assesses the factors affecting residual pollutant saturation.
CHEMICAL ENGINEERING SCIENCE
(2022)