Results 21 to 30 of about 269,699 (297)
Transient flows in active porous media [PDF]
Physical Review E, 2017 Stimuli-responsive materials that modify their shape in response to changes in environmental conditions -- such as solute concentration, temperature, pH, and stress -- are widespread in nature and technology. Applications include micro- and nanoporous materials used in filtration and flow control.
Kosmidis, Lefteris I. +1 more
openaire +4 more sources
On the hydrodynamics and heat convection of an impinging external flow upon a cylinder with transpiration and embedded in a porous medium [PDF]
, 2017 This paper extends the existing studies of heat convection by an external flow impinging upon a flat porous insert to that on a circular cylinder inside a porous medium.
Alizadeh, Ahmed +3 more
core +2 more sources
Variable-density flow in porous media [PDF]
Journal of Fluid Mechanics, 2006 Steady-state distributions of water potential and salt concentration in coastal aquifers are typically modelled by the Henry problem, which consists of a fully coupled system of flow and transport equations. Coupling arises from the dependence of water density on salt concentration.
DENTZ M +5 more
openaire +3 more sources
Nanogel formation of polymer solutions flowing through porous media [PDF]
, 2012 A gelation process was seen to occur when Boger fluids made from aqueous solutions of polyacrylamide (PAA) and NaCl flowed through porous media with certain characteristics.
Alves, Manuel A. +4 more
core +1 more source
MODELING WELLS IN POROUS MEDIA FLOW
Mathematical Models and Methods in Applied Sciences, 2000 In this paper, we prove the existence of weak solutions for mathematical models of miscible and immiscible flow through porous medium. An important difficulty comes from the modelization of the wells, which does not allow us to use classical variational formulations of the equations.
Fabrie, Pierre, Gallouët, Thierry
openaire +2 more sources
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 +7 more
doaj +1 more source
A two-pressure model for slightly compressible single phase flow in bi-structured porous media [PDF]
, 2012 Problems involving flow in porous media are ubiquitous in many natural and engineered systems. Mathematical modeling of such systems often relies on homogenization of pore-scale equations and macroscale continuum descriptions.
Davit, Yohan +2 more
core +5 more sources
Reactive Flow in Fractured Porous Media [PDF]
, 2020 In this work we present a model reduction procedure to derive a hybrid-dimensional framework for the mathematical modeling of reactive transport in fractured porous media. Fractures are essential pathways in the underground which allow fast circulation of the fluids present in the rock matrix, often characterized by low permeability.
A. Fumagalli, A. Scotti
openaire +2 more sources
Non-Newtonian effects in the peristaltic flow of a Maxwell fluid [PDF]
, 2001 We analyzed the effect of viscoelasticity on the dynamics of fluids in porous media by studying the flow of a Maxwell fluid in a circular tube, in which the flow is induced by a wave traveling on the tube wall.
.A. del Rio +15 more
core +2 more sources
Coupling of two-phase flow in fractured-vuggy reservoir with filling medium
Open Physics, 2017 Caves in fractured-vuggy reservoir usually contain lots of filling medium, so the two-phase flow in formations is the coupling of free flow and porous flow, and that usually leads to low oil recovery.
Xie Haojun +4 more
doaj +1 more source