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We prove global existence of nonnegative weak solutions to a degenerate parabolic system which models the interaction of two thin fluid films in a porous medium. Furthermore, we show that these weak solutions converge at an exponential rate…

Analysis of PDEs · Mathematics 2011-10-31 Joachim Escher , Philippe Laurencot , Bogdan-Vasile Matioc

We prove global existence of nonnegative weak solutions for a strongly coupled, fourth order degenerate parabolic system governing the motion of two thin fluid layers in a porous medium when capillarity is the sole driving mechanism.

Analysis of PDEs · Mathematics 2012-07-24 Bogdan-Vasile Matioc

The paper focuses on a model describing the spreading of an insoluble surfactant on a thin viscous film with capillary effects taken into account. The governing equation for the film height is degenerate parabolic of fourth order and…

Analysis of PDEs · Mathematics 2012-12-27 Joachim Escher , Matthieu Hillairet , Philippe Laurencot , Christoph Walker

This paper studies the existence and asymptotic behavior of global weak solutions for a thin film equation with insoluble surfactant under the influence of gravitational, capillary and van der Waals forces. We prove the existence of global…

Analysis of PDEs · Mathematics 2019-08-21 Gabriele Bruell , Rafael Granero-Belinchón

Of concern is the study of a system of three equations describing the motion of a viscous complete wetting two-phase thin film endowed with a layer of insoluble surfactant on the surface of the upper fluid under the effects of capillary…

Analysis of PDEs · Mathematics 2016-08-30 Gabriele Bruell

We establish the existence of non-negative global weak solutions for a strongly couple degenerated parabolic system which was obtained as an approximation of the two-phase Stokes problem driven solely by capillary forces. Moreover, the…

Analysis of PDEs · Mathematics 2012-10-25 Joachim Escher , Bogdan-Vasile Matioc

In this contribution we prove the existence of weak solutions to degenerate parabolic systems arising from the coupled moisture movement, transport of dissolved species and heat transfer through partially saturated porous materials.…

Analysis of PDEs · Mathematics 2017-01-03 Michal Beneš , Lukáš Krupička

The existence of global nonnegative weak solutions is proved for coupled one-dimensional lubrication systems that describe the evolution of nanoscopic bilayer thin polymer films that take account of Navier-slip or no-slip conditions at both…

Analysis of PDEs · Mathematics 2012-11-12 Sebastian Jachalski , Georgy Kitavtsev , Roman Taranets

This paper studies a fourth-order, nonlinear, doubly-degenerate parabolic equation derived from the thin film equation in spherical geometry. A regularization method is used to study the equation and several useful estimates are obtained.…

Analysis of PDEs · Mathematics 2017-03-02 Di Kang , Tharathep Sangsawang , Jialun Zhang

This paper is concerned with theoretical analysis of a heat and moisture transfer model arising from textile industries, which is described by a degenerate and strongly coupled parabolic system. We prove the global (in time) existence of…

Analysis of PDEs · Mathematics 2009-08-11 Buyang Li , Weiwei Sun , Yi Wang

This paper is devoted to the analysis of non-negative solutions for a degenerate parabolic-elliptic Patlak-Keller-Segel system with critical nonlinear diffusion in a bounded domain with homogeneous Neumann boundary conditions. Our aim is to…

Analysis of PDEs · Mathematics 2012-07-19 Elissar Nasreddine

We study a thermodynamically consistent diffuse interface model that describes the motion of a two-phase flow of two viscous incompressible Newtonian fluids with unmatched densities and a soluble surfactant in a bounded domain of two or…

Analysis of PDEs · Mathematics 2026-01-13 Bohan Ouyang , Maurizio Grasselli , Hao Wu

We consider a nonlinear 4th-order degenerate parabolic partial differential equation that arises in modelling the dynamics of an incompressible thin liquid film on the outer surface of a rotating horizontal cylinder in the presence of…

Analysis of PDEs · Mathematics 2009-10-30 Marina Chugunova , M. C. Pugh , R. M. Taranets

A thin film on a horizontal solid substrate and coated with a soluble surfactant is considered. The governing degenerate parabolic equations for the film height and the surfactant concentrations on the surface and in the bulk are derived…

Analysis of PDEs · Mathematics 2010-02-10 Joachim Escher , Matthieu Hillairet , Philippe Laurençot , Christoph Walker

In this paper we consider a two-phase thin film consisting of two immiscible viscous fluids endowed with a layer of insoluble surfactant on the surface of the upper fluid. The governing equations for the two film heights and the surfactant…

Analysis of PDEs · Mathematics 2016-07-07 Gabriele Bruell

In this paper we prove the existence of weak solutions to degenerate parabolic systems arising from the fully coupled moisture movement, solute transport of dissolved species and heat transfer through porous materials. Physically relevant…

Analysis of PDEs · Mathematics 2017-07-24 Michal Beneš , Igor Pažanin

In this work we investigate a coupled system of degenerate and nonlinear partial differential equations governing the transport of reactive solutes in groundwater. We show that the system admits a unique weak solution provided the nonlinear…

Analysis of PDEs · Mathematics 2021-01-15 Margarida Baía , Farid Bozorgnia , Léonard Monsaingeon , Juha Videman

We consider a class of cross diffusion systems with degenerate (or porous media type) diffusion which is inspired by models in mathematical biology/ecology with zero self diffusions. Known techniques for scalar equations are no longer…

Analysis of PDEs · Mathematics 2019-09-12 Dung Le

We study existence and long-time behaviour of strong solutions for the thin film equation using a priori estimates in a weighted Sobolev space. This equation can be classified as a doubly degenerate fourth-order parabolic and it models…

Analysis of PDEs · Mathematics 2017-10-02 Roman M. Taranets

In this technical report, we consider a nonlinear 4th-order degenerate parabolic partial differential equation that arises in modelling the dynamics of an incompressible thin liquid film on the outer surface of a rotating horizontal…

Analysis of PDEs · Mathematics 2009-10-28 Marina Chugunova , M. C. Pugh , R. M. Taranets
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