Results 51 to 60 of about 68,920 (314)

Review on mesoscopic flow theory in porous media

工程科学学报, 2022
Porous media are widely found in underground rocks, biomimetic, and engineering materials. However, the current flow theory of fluids (liquid and gas, etc.) is incomplete to study flows in small and complex pores, thus a new theory is urgently needed for
Wei-yao ZHU, Hua LI, Qing-jun DENG, Qi-peng MA, Ya-jing LIU   +4 more
doaj   +1 more source

The diffusion of CO2-brine storage based on stochastic partial differential equations [PDF]

E3S Web of Conferences, 2020
The migration of CO2 is stochastic in heterogeneous porous media. This paper considers the CO2 diffusion with the case of steady flow in heterogeneous porous media.
Bin Liu, Bo Wang, Zhuo Li, Yanfang Lv
doaj   +1 more source

Adaptive Observer for Coupled Wave PDE and Infinite ODE With Sampled Data and Unknown Input: Application to Brain Hemodynamics Estimation

International Journal of Adaptive Control and Signal Processing, EarlyView.
This article proposes a convergent adaptive observer for a damped wave PDE and an infinite‐dimensional ODE coupled in cascade using sampled‐in‐space ODE state measurements. The proposed observer estimates the distributed states of the PDE and ODE along with unknown PDE parameters and spatial input.
Zehor Belkhatir, Sarah Mechhoud, Taous‐Meriem Laleg‐Kirati   +2 more
wiley   +1 more source

Controlling sodium silicate sol-gel transition time through encapsulation of hydrochloric acid using tunable polymeric microcapsules

Scientific Reports
Sodium silicate gels are used in various applications due to their unique properties and tunable characteristics. Silicate gels can be formed by reducing the solution pH through acid activators, such as hydrochloric acid (HCl), leading to network ...
Mateus Lima, Amanda C. S. N. Pessoa, Ademir de Medeiros, Jorge Avendãno, Bruna C. Leopércio, Marcio S. Carvalho¹   +5 more
doaj   +1 more source

A Subgrid-Scale Model for Turbulent Flow in Porous Media

, 2019
Given the analogy between the filtered equations of large eddy simulation and volume-averaged Navier–Stokes equations in porous media, a subgrid-scale model is presented to account for the residual stresses within the porous medium. The proposed model is
Fallahjoybari, Nima, Lundström, Staffan T., Fallahjoybari, Nima,, Lundström, Staffan T.,   +3 more
core   +1 more source

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

Thermal Conduction Simulation Based on Reconstructed Digital Rocks with Respect to Fractures

Energies, 2019
Effective thermal conductivity (ETC), as a necessary parameter in the thermal properties of rock, is affected by the pore structure and the thermal conduction conditions.
Haiyuan Yang, Li Zhang, Ronghe Liu, Xianli Wen, Yongfei Yang, Lei Zhang, Kai Zhang, Roohollah Askari   +7 more
doaj   +1 more source

Two-phase inertial flow in homogeneous porous media: A theoretical derivation of a macroscopic model [PDF]

, 2008
The purpose of this article is to derive a macroscopic model for a certain class of inertial two-phase, incompressible, Newtonian fluid flow through homogenous porous media. Starting from the continuity and Navier–Stokes equations in each phase β and γ ,
LASSEUX, Didier, AHMADI-SENICHAULT, Azita, ABBASIAN ARANI, Ali Akbar, Ahmadi, Azita   +3 more
core   +1 more source

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

Advanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios, Anthony Gonzalez, Aleksander Aleman, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal   +5 more
wiley   +1 more source

Central schemes for porous media flows [PDF]

Clinics, 2009
We are concerned with central differencing schemes for solving scalar hyperbolic conservation laws arising in the simulation of multiphase flows in heterogeneous porous media. We compare the Kurganov-Tadmor, 2000 semi-discrete central scheme with the Nessyahu-Tadmor, 1990 central scheme.
Abreu, E., Pereira, F., Ribeiro, S.
openaire   +5 more sources