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

open access: yesModern Stochastics: Theory and Applications, 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.
Alessandro De Gregorio
doaj   +4 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 $u_t=\nabla\cdot (u^{m-1}\nabla (-\Delta)^{-s}u)$, which describes a flow through a porous medium driven by a nonlocal pressure.
A. K. Head   +38 more
core   +2 more sources

Periodic solutions for a porous medium equation

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2011
In this paper, we study with a periodic porous medium equation with nonlinear convection terms and weakly nonlinear sources under Dirichlet boundary conditions.
Dazhi Zhang, Jiebao Sun, Boying Wu
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

The mathematical model of gas flowing in porous medium based on the homogenization method [PDF]

open access: yesE3S Web of Conferences, 2021
Considered the characteristics of porous medium in the coal seam and goaf, in order to reflect the accurately influence of various porous media against the gas flow, the mathematical model of discrete multi-scale network and macroscopic flow, CFCM (Coal ...
Xiong Wei
doaj   +1 more source

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

On the global existence and analyticity of the mild solution for the fractional Porous medium equation

open access: yesBoundary Value Problems, 2023
In this research article we focus on the study of existence of global solution for a three-dimensional fractional Porous medium equation. The main objectives of studying the fractional porous medium equation in the corresponding critical function spaces ...
Muhammad Zainul Abidin, Muhammad Marwan
doaj   +1 more source

Numerical study of the process of unsteady flow in a three-layer porous medium

open access: yesMagazine of Civil Engineering, 2023
The unsteady fluid flow in a three-layer porous medium is numerically investigated and is an important and topical problem. An analytical solution of the equation for the pressure fluid layer is obtained on the basis of the theory of elastic regime ...
Ravshanov Normahmad   +3 more
doaj   +1 more source

Fluctuation-Dissipation Theorems for Multiphase Flow in Porous Media

open access: yesEntropy, 2021
A thermodynamic description of porous media must handle the size- and shape-dependence of media properties, in particular on the nano-scale. Such dependencies are typically due to the presence of immiscible phases, contact areas and contact lines.
Dick Bedeaux, Signe Kjelstrup
doaj   +1 more source

Global Well-Posedness and Analyticity of Generalized Porous Medium Equation in Fourier-Besov-Morrey Spaces with Variable Exponent

open access: yesMathematics, 2021
In this paper, we consider the generalized porous medium equation. For small initial data u0 belonging to the Fourier-Besov-Morrey spaces with variable exponent, we obtain the global well-posedness results of generalized porous medium equation by using ...
Muhammad Zainul Abidin, Jiecheng Chen
doaj   +1 more source

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