Results 41 to 50 of about 135,655 (317)

Studying Effect of Travel Distance on Dispersion Coefficient in Layered Soil Perpendicular to Flow Direction using Numerical Model [PDF]

open access: yesJournal of Hydraulic and Water Engineering, 2023
One of the most important measurable properties of the porous medium is dispersivity, which is used in advection-dispersion equations related to pollutant transport in the study of groundwater.
H. Mehdipanh   +2 more
doaj   +1 more source

Effect of Anionic Surfactants on the Oil–Water–Rock Interactions by an Improved Washburn Method

open access: yesMolecules
The complex and variable structure of subsurface oil reservoirs as well as the small pore throat size of reservoirs make it extremely important to investigate the effect of oil–water–rock interactions for enhancing oil recovery. In this paper, the powder
Tie Kuang   +8 more
doaj   +1 more source

Thermohaline convection in a homogeneous porous medium

open access: yesHungarian Geophysics, 2021
The theoretical examination of the combined effect of heat and mass transfer in porous media is relevant to improve understanding thermohaline natural convection in both local- and basin-scale groundwater flow systems. Numerical model calculations were carried out to investigate the interaction of the temperature- (ΔT) and salinity-driven (Δc) natural ...
Szijártó, Márk, Galsa, Attila
openaire   +1 more source

Natural convection and the evolution of a reactive porous medium

open access: yes, 2011
We describe a mathematical model of buoyancy-driven flow and solute transport in a saturated porous medium, the porosity and permeability of which evolve through precipitation and dissolution as a mineral is lost or gained from the pore fluid. Imposing a
DAVID PRITCHARD   +3 more
core   +1 more source

Biofilms in porous media: development of macroscopic transport equations via volume averaging with closure for local mass equilibrium conditions [PDF]

open access: yes, 2009
In this work, we upscale a pore-scale description of mass transport in a porous medium containing biofilm to develop the relevant Darcy-scale equations.
Quintard, Michel   +4 more
core   +1 more source

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

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

The instability of fronts in a porous medium [PDF]

open access: yesCommunications in Mathematical Physics, 1983
We use a random choice numerical method to analyze the instability of a front separating two fluids in a porous medium. We observe a linear instability and a catastrophic finite amplitude instability. A qualitative analogy with problems involving a transition to turbulence is pointed out.
openaire   +3 more sources

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