Results 11 to 20 of about 135,655 (317)

Flow through a porous medium

open access: yesMechanics Research Communications, 1987
Recently the first author [ibid. 11, 277-279 (1984; Zbl 0548.76072)] has studied the flow through a very porous medium bounded by semi-infinite plate when the free-stream velocity is constant. The purpose of this paper is the study of the steady flow through a very porous medium bounded by a semi-infinite plate when the fluid is viscous and the free ...
Raptis, A. A., Takhar, H. S.
openaire   +4 more sources

Numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with different aspect ratios in the presence of porous medium

open access: yesCase Studies in Thermal Engineering, 2021
In this study, a numerical investigation of mixed convection of nanofluid flow in a trapezoidal channel with two different aspect ratios of 0.3 and 0.5 with the presence of porous media is investigated.
M.A. El-Shorbagy   +5 more
doaj   +3 more sources

System of porous medium equations [PDF]

open access: yesJournal of Differential Equations, 2021
We investigate the evolution of population density vector, $\bold{u}=\left(u^1,\cdots,u^k\right)$, of $k$-species whose diffusion is controlled by its absolute value $\left|\bold{u}\right|$. More precisely we study the properties and asymptotic large time behaviour of solution $\bold{u}=\left(u^1,\cdots,u^k\right)$ of degenerate parabolic system \begin{
Kim, Sunghoon, Lee, Ki-Ahm
openaire   +3 more sources

Features of nanoparticle composite-enhanced CO2 foam-flooding systems for low-permeability reservoirs

open access: yesFrontiers in Energy Research, 2023
This study examined an enhanced foam-flooding system incorporating nanoparticles and polymers under geological conditions of a reservoir of the Shu 16 block in the Yushulin oilfield.
Yong Liu   +7 more
doaj   +1 more source

Mathematical modeling of physical and chemical processes in porous media in solving the problems of nanocomposite materials and water-filling [PDF]

open access: yesНанотехнологии в строительстве, 2023
: Introduction. The complexity and laboriousness of system studies of physical and chemical processes in the volume and at the interface of the porous medium determines the need to apply mathematical modeling.
Valentina V. Kuzina   +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

Effects of porous medium filling on thermally developing forced convection in a parallel plate channel

open access: yesInternational Journal of Thermofluids, 2023
This study obtains the semi-analytical solutions and explores the thermal characteristics of a thermally developing flow in a parallel plate channel, partially filled with a porous medium at the core, while considering local thermal non-equilibrium ...
M. Farrukh Baig   +3 more
doaj   +1 more source

Analysis of Longitudinal Guided Wave Propagation in a Liquid-Filled Pipe Embedded in Porous Medium

open access: yesApplied Sciences, 2021
To study the leakage situation of a liquid-filled pipe in long-term service, a model of a liquid-filled pipe embedded in an infinite porous medium as well as in a finite porous medium is designed.
Nana Su   +4 more
doaj   +1 more source

Porous Medium [PDF]

open access: yes, 2022
A porous medium can be defined as a material which contains spaces which, when continuous in some way, enable the movement of fluids, air and materials of different chemical and physical properties. The ability of a porous medium to permit the movement of fluids, air or a mixture of different fluids is related to porosity and the variability of pore ...
openaire   +2 more sources

The Thermal Performance Analysis of an Al2O3-Water Nanofluid Flow in a Composite Microchannel

open access: yesNanomaterials, 2022
Partial filling of porous medium insert in a channel alleviates the tremendous pressure drop associated with a porous medium saturated channel, and enhances heat transfer at an optimum fraction of porous medium filling.
Mirza Farrukh Baig   +2 more
doaj   +1 more source

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