Article
Acoustics
Shahab Amanat, Kourosh Gholami, Reza Rafiee-Dehkharghani, Dipanshu Bansal
Summary: This paper investigates the optimal design of wave barriers in fluid-saturated porous media to mitigate body waves. Two objective functions are considered: maximizing the bandgap width and the relative bandgap. The results show that the obtained optimal barrier configuration effectively attenuates damaging ground vibrations.
Article
Engineering, Geological
Xiao Wang, Shui Wan, Peng Zhou, Jundong Fu, Zhiqiang Wu
Summary: This study aimed to investigate the vibration mitigation effect of periodic rock-socketed piles installed in porous soil. Biot's theory and the periodic theory from solid-state physics were used to observe the ultralow and surface-wave bandgaps in pile barriers. The results showed that the width of the ultralow bandgap decreased slightly when the porous soil was fully saturated. Additionally, a critical frequency for Rayleigh waves was defined to overcome the limitations of the sound cone method for calculating the surface-wave bandgap.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Engineering, Chemical
Xin Liu, M. Matti Maricq, Douglas A. Dobson
Summary: A new statistical capillary tube model is proposed to predict filtration efficiency and permeability of particulate filters. The model considers the filter media's porous structure as an assembly of curved capillary tubes with a statistical size distribution. Compared with the widely used spherical model, the capillary tube model provides additional permeability prediction and better filtration predictions over a wider range of porosity, including lower porosity of washcoated filters.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Mechanics
Alexander Z. Zinchenko, Jacob R. Gissinger, Robert H. Davis
Summary: This study presents high-resolution, long-time three-dimensional simulations of the slow, pressure-driven flow of a periodic emulsion through a dense array of solid spheres. It is found that even light contamination has a significant impact on the migration velocity of the drops.
JOURNAL OF FLUID MECHANICS
(2022)
Review
Thermodynamics
Feda Abdalla Zahor, Reema Jain, Ahmada Omar Ali, Verdiana Grace Masanja
Summary: This paper provides a review of previous research studies on mathematical models for entropy generation in the MHD flow of nanofluids. The influence of various parameters on the velocity profiles, temperature profiles, and entropy generation is discussed. The paper also summarizes the numerical methods used to solve the model equations and aims to fill the research gap and develop a research agenda.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Article
Energy & Fuels
Mohammad Firoozzadeh, Amir Hossein Shiravi
Summary: This experimental study investigates the effects of a porous medium and phase change material on cooling photovoltaic modules. The results show that these passive cooling methods can significantly reduce module temperature and improve output power.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Multidisciplinary Sciences
Hamidreza Aghamiri, Mohammadreza Niknejadi, Davood Toghraie
Summary: This study investigates the forced convection of nanofluid flow in a microchannel with rotating cylinders, finding that increasing the velocity of rotating cylinders, Reynolds number, and volume fraction of nanoparticles can enhance heat transfer and pressure drop.
SCIENTIFIC REPORTS
(2021)
Article
Thermodynamics
Adel Miles, Rachid Bessaih
Summary: This study examines laminar natural convection flow and entropy production within a vertical porous annulus filled with nanofluids. The inclusion of nanoparticles improves heat transfer and increases total entropy production, while Darcy and porosity numbers affect flow structure and entropy generation. Increasing Da and epsilon values result in higher average Nusselt and Be numbers, while the opposite leads to a decrease in these parameters.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Materials Science, Multidisciplinary
Marco Sauermoser-Yri, Naresh Veldurthi, Christoph Hubertus Woelfe, Preben Johnsen Svartvatn, Svenn Ove Flo Hoem, Markus Joakim Lid, Robert Bock, James W. Palko, Jan Torgersen
Summary: This study used finite volume simulations to investigate the effect of porosity on the permeability and electrical as well as thermal conductivity of TPMS porous media. The results revealed significant differences in performance among different TPMS structures, with SPB and CL exhibiting higher permeabilities while SG and SP having higher electrical and thermal conductivity. Surface area density was found to significantly impact the properties of SPB and CL, while tortuosity variation had a minor effect on permeability and conductivity.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Energy & Fuels
Ziwei Li, Yi Yang, Elisabetta Gariboldi, Yanwen Li
Summary: The paper presents an extension of the morphology efficiency to quantify the influence of morphology on the effective thermal conductivity (ETC) of composites. The efficiency is initially derived from two extreme models and compared to determine the best representative for isotropic composites. Prediction models for ETC are proposed for composites with different lattice structures, capable of predicting a wide range of porosity and thermal conductivity.
Article
Materials Science, Multidisciplinary
Kun Liu, Jia-ao Wang, Hongfei Zheng, Xiaodong Sun, Zhimo Yang, Jianzong Man, Xinyu Wang, Juncai Sun
Summary: A facile and eco-friendly method is reported to synthesize tin submicron spheres dispersed in nitrogen-doped porous carbon by pyrolysis, inhibiting the agglomeration of tin-based nanomaterials and simplifying the synthesis process. The self-formed Na2CO3 templates during pyrolysis support the formation of nitrogen-doped porous carbon, which provides good electronic conductivity and ample active sites. The Sn/NPC electrode exhibits excellent electrochemical performance as an anode for Li-ion batteries.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Crystallography
Yingshuang Meng, Zhonghua Li, Xiangcun Li, Wu Xiao, Gaohong He, Xuemei Wu, Xiaobin Jiang
Summary: In this study, the porosity distribution and separation property of porous crystal layer formed via polythermal process were investigated. A proposed porosity distribution model, considering cooling profile and crystal settling effect, showed simulative results matching MRI analysis. Significant porosity variation was observed in the crystal layer under different cooling profiles, while vertical supersaturation degree gradient induced by fluid fluctuation could impact nucleation and crystal growth.
Article
Engineering, Chemical
D. R. Rieder, E. A. J. F. Peters, J. A. M. Kuipers
Summary: The distribution of catalytically active species in heterogeneous porous catalysts significantly affects their performance and durability. A drying model is developed to study this redistribution, and the impact of non-linear couplings between liquid viscosity and surface tension on hydrodynamics and species redistribution during the drying process is investigated. The gained insights are then utilized to control the redistribution within the model by solely adjusting external process parameters.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Engineering, Chemical
M. B. Hawken, S. Reid, D. A. Clarke, M. Watson, C. J. Fee, D. J. Holland
Summary: Additive manufacturing enables the production of novel porous structures, such as triply periodic minimal surfaces (TPMS), which can enhance the efficiency of chemical engineering applications. This study experimentally examined the printability and pressure drop of Schwarz-Diamond TPMS structures. X-ray computed tomography scans confirmed accurate printing of the structures, but a systematic reduction in porosity compared to the designed structures was observed. Pressure drop measurements revealed that it decreased with increasing porosity and hydraulic diameter, but printer type and column diameter had no effect. A new pressure drop correlation was proposed based on these measurements to predict pressure drop for Schwarz-Diamond TPMS structures with different porosities and hydraulic diameters.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Mathematics, Applied
S. Mukherjee, G. C. Shit
Summary: In this study, the effects of ion diffusion coefficient on steady electroosmotic couple stress nanofluid flow and heat transfer in a porous microchannel bounded by two permeable beds were examined. The combined effects of ion diffusivity and injected nanofluid velocity on Electric double layer (EDL) thickness were analytically expressed. The differential transform method (DTM) was used to solve the flow equations, and the DTM solution was compared with the exact analytical solution, showing excellent matching. It was observed that the enhancement of ion diffusion coefficient increases nanofluid velocity at the edge of EDL but diminishes with intrinsic couple stress. The bulk nanofluid flow rate follows a quadratic relationship with the couple stress parameter. Furthermore, the study investigated the influence of diffusive Reynolds number, porous permeability parameter, and couple stress parameter on nanofluid temperature and nanoparticle concentration distribution in the microchannel. The nanofluid temperature was found to increase with an enhancement of ion diffusion coefficient and decrease with an increase in porous permeability and couple stress parameter.
APPLIED MATHEMATICS AND COMPUTATION
(2022)
Article
Chemistry, Physical
Alexander M. Berezhkovskii, Leonardo Dagdug, Sergey M. Bezrukov
JOURNAL OF CHEMICAL PHYSICS
(2017)
Article
Chemistry, Physical
Alexander M. Berezhkovskii, Leonardo Dagdug, Sergey M. Bezrukov
JOURNAL OF CHEMICAL PHYSICS
(2017)
Article
Chemistry, Physical
Alexander M. Berezhkovskii, Leonardo Dagdug, Sergey M. Bezrukov
JOURNAL OF CHEMICAL PHYSICS
(2017)
Article
Chemistry, Physical
Leonardo Dagdug, Alexander M. Berezhkovskii, Vladimir Yu. Zitserman
JOURNAL OF CHEMICAL PHYSICS
(2017)
Article
Chemistry, Physical
Alexander M. Berezhkoyskii, Leonardo Dagdug, Sergey M. Bezrukov
JOURNAL OF PHYSICAL CHEMISTRY B
(2017)
Article
Chemistry, Physical
Alexei T. Skvortsov, Alexander M. Berezhkovskii, Leonardo Dagdug
JOURNAL OF CHEMICAL PHYSICS
(2018)
Article
Chemistry, Physical
Yoshua Chavez, Guillermo Chacon-Acosta, Leonardo Dagdug
JOURNAL OF CHEMICAL PHYSICS
(2018)
Letter
Chemistry, Physical
Leonardo Dagdug, Alexander M. Berezhkovskii, Vladimir Yu. Zitserman
JOURNAL OF CHEMICAL PHYSICS
(2018)
Article
Physics, Condensed Matter
Yoshua Chavez, Guillermo Chacon-Acosta, Leonardo Dagdug
JOURNAL OF PHYSICS-CONDENSED MATTER
(2018)
Article
Chemistry, Physical
Alexei T. Skvortsov, Alexander M. Berezhkovskii, Leonardo Dagdug
JOURNAL OF CHEMICAL PHYSICS
(2018)
Article
Chemistry, Physical
Alexander M. Berezhkovskii, Leonardo Dagdug, Sergey M. Bezrukov
JOURNAL OF CHEMICAL PHYSICS
(2019)
Article
Chemistry, Physical
Alexei T. Skvortsov, Alexander M. Berezhkovskii, Leonardo Dagdug
JOURNAL OF CHEMICAL PHYSICS
(2019)
Article
Chemistry, Physical
Denis S. Grebenkov, Ralf Metzler, Gleb Oshanin, Leonardo Dagdug, Alexander M. Berezhkovskii, Alexei T. Skvortsov
JOURNAL OF CHEMICAL PHYSICS
(2019)
Article
Chemistry, Physical
Alexander M. Berezhkovskii, Leonardo Dagdug, Sergey M. Bezrukov
JOURNAL OF PHYSICAL CHEMISTRY B
(2019)
Article
Chemistry, Physical
Alexander M. Berezhkovskii, Leonardo Dagdug, Sergey M. Bezrukov
JOURNAL OF CHEMICAL PHYSICS
(2019)
