Results 31 to 40 of about 458,199 (335)

Stochastic models associated to a Nonlocal Porous Medium Equation [PDF]

open access: yes, 2018
The nonlocal porous medium equation considered in this paper is a degenerate nonlinear evolution equation involving a space pseudo-differential operator of fractional order.
De Gregorio, Alessandro
core   +2 more sources

An upscaling-based numerical simulation method for time-varying reservoir properties

open access: yesFrontiers in Earth Science
Both field practices and laboratory experiments in mature, high water-cut oilfields have confirmed that long-term water flooding dynamically alters rock wettability and micro-pore structure, causing shifts in relative permeability curves and reservoir ...
Yubo Lan   +8 more
doaj   +1 more source

Flow Through Porous Media Induced by an Impervious Rotating Disk in the Presence of Magnetic Field

open access: yesEngineering Transactions, 2005
The flow of an electrically conducting viscous incompressible fluid, due to an infinite impervious rotating disk bounded by porous medium is discussed.
P.K. SHARMA, R.C. CHAUDHARY
doaj   +1 more source

Anomalous diffusion mediated by atom deposition into a porous substrate

open access: yes, 2009
Constant flux atom deposition into a porous medium is shown to generate a dense overlayer and a diffusion profile. Scaling analysis shows that the overlayer acts as a dynamic control for atomic diffusion in the porous substrate.
Amaël Caillard   +6 more
core   +1 more source

Influence of high porous sponges for improving the interfacial evaporation from hemispherical solar distillers

open access: yesScientific Reports, 2023
The present study aims to improve the palatable water production from the hemispherical cover solar distiller (HSD). To augment the palatable water produced from the hemispherical cover, a black sponge was utilized as a porous medium using different ...
Ravishankar Sathyamurthy   +5 more
doaj   +1 more source

Using MHD free convection to receive the generated heat by an elliptical porous media

open access: yesCase Studies in Thermal Engineering, 2022
In many chemical processes, porous medium is usually used as a catalyst and mixing of reactants that may generate heat in thermal chemical processes.
Gongxing Yan   +4 more
doaj   +1 more source

Lattice Boltzmann Model for Gas Flow through Tight Porous Media with Multiple Mechanisms

open access: yesEntropy, 2019
In the development of tight gas reservoirs, gas flow through porous media usually takes place deep underground with multiple mechanisms, including gas slippage and stress sensitivity of permeability and porosity.
Junjie Ren   +3 more
doaj   +1 more source

Dynamics of osmosis in a porous medium [PDF]

open access: yesRoyal Society Open Science, 2014
We derive from kinetic theory, fluid mechanics and thermodynamics the minimal continuum-level equations governing the flow of a binary, non-electrolytic mixture in an isotropic porous medium with osmotic effects. For dilute mixtures, these equations are linear and in this limit provide a theoretical basis for the widely used semi-empirical
Silvana S. S. Cardoso   +1 more
openaire   +6 more sources

Porous Medium Equation with Nonlocal Pressure [PDF]

open access: yes, 2018
We provide a rather complete description of the results obtained so far on the nonlinear diffusion equation $u_t=\nabla\cdot (u^{m-1}\nabla (- )^{-s}u)$, which describes a flow through a porous medium driven by a nonlocal pressure. We consider constant parameters $m>1$ and $02$, and the asymptotic behavior of solutions when $N=1$. The cases $m = 1$
Stan, Diana   +2 more
openaire   +2 more sources

Equilibrium phase transitions in a porous medium [PDF]

open access: yesPhysical Review B, 1996
Static critical phenomena of a three-dimensional Ising model confined in a porous medium made by spinodal decomposition have been studied using large-scale Monte Carlo simulations. We thus examine the influence of the geometry of Vycor-like materials on phase transitions.
MacFarland, T.   +2 more
openaire   +4 more sources

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