Results 81 to 90 of about 334,380 (241)

Dynamic Permeability in Porous Media [PDF]

Physical Review Letters, 1988
We calculate from first principles the frequency-dependent permeability $\ensuremath{\kappa}(\ensuremath{\omega})$ in porous media for a variety of microstructures. It is found that when $\ensuremath{\kappa}(\ensuremath{\omega})$ is scaled by its static value ${\ensuremath{\kappa}}_{0}$ and the frequency by a characteristic ${\ensuremath{\omega}}_{c ...
Sheng, Ping, Zhou, Min-Yau
openaire   +4 more sources

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Gas flow regimes judgement in nanoporous media by digital core analysis

Open Physics, 2018
A method to judge shale gas flow regimes based on digital core analysis is proposed in this work. Firstly, three-dimensional shale digital cores in an anonymous shale formation in the Sichuan Basin are reconstructed by a Markov Chain Monte Carlo (MCMC ...
Song Wenhui, Liu Hua, Wang Weihong, Zhao Jianlin, Sun Hai, Wang Dongying, Li Yang, Yao Jun   +7 more
doaj   +1 more source

Reducing indoor particle exposure using mobile air purifiers—Experimental and numerical analysis

AIP Advances, 2021
Aerosol particles are one of the main routes of transmission of COVID-19. Mobile air purifiers are used to reduce the risk of infection indoors. We focus on an air purifier that generates a defined volumetric air flow through a highly efficient filter ...
Adrian Tobisch, Lukas Springsklee, Lisa-Franziska Schäfer, Nico Sussmann, Martin J. Lehmann, Frederik Weis, Raoul Zöllner, Jennifer Niessner   +7 more
doaj   +1 more source

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

A novel gravimetric method for characterization of nanoporous materials using CO₂

Journal of CO2 Utilization
Nanoporous materials are widely used in applications such as gas storage, catalysis, and separation processes, where accurate characterization of pore structure is essential.
Omer Salim, Sagar Hussain Sabuz, Mohammad Piri   +2 more
doaj   +1 more source

Elastoviscoplastic flows in porous media

Journal of Non-Newtonian Fluid Mechanics, 2018
We investigate the elastoviscoplastic flow through porous media by numerical simulations. We solve the Navier-Stokes equations combined with the elastoviscoplastic model proposed by Saramito for the stress tensor evolution. In this model, the material behaves as a viscoelastic solid when unyielded, and as a viscoelastic Oldroyd-B fluid for stresses ...
De Vita, F., Rosti, M.E., Izbassarov, D., Duffo, L., Tammisola, O., Hormozi, S., Brandt, L.   +6 more
openaire   +4 more sources

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

Advanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo, Daniela Winsley Valereto Friozi, Vinícius de Oliveira, Marcia Cristina Branciforti   +3 more
wiley   +1 more source

Storage of supercritical carbon dioxide in nanoporous media

Journal of CO2 Utilization
This study investigates the adsorption behavior of supercritical carbon dioxide (scCO2) in nanoporous materials, with a particular focus on the effects of temperature and pore size.
Omer Salim, Keerti Vardhan Sharma, Mohammad Piri   +2 more
doaj   +1 more source

Homogenization of two fluid flow in porous media

, 2015
The macroscopic behavior of air and water in porous media is often approximated using Richards’ equation for the fluid saturation and pressure. This equation is parametrized by the hydraulic conductivity and water release curve.
Daly, K. R., Roose, T.
core   +2 more sources