Results 31 to 40 of about 2,694 (308)

On two coupled degenerate parabolic equations motivated by thermodynamics

open access: yes, 2022
We propose a system of two coupled parabolic equations that have degenerate diffusion constants depending on the energy-like variable. The dissipation of the velocity-like variable is fed as a source term into the energy equation leading to conservation ...
Alexander Mielke, Mielke, Alexander
core   +1 more source

Singularly perturbed periodic parabolic equations with alternating boundary layer type solutions

open access: yesAbstract and Applied Analysis, 2006
We consider a class of singularly perturbed parabolic equations for which the degenerate equations obtained by setting the small parameter equal to zero are algebraic equations that have several roots.
Adelaida B. Vasil'eva   +1 more
doaj   +2 more sources

Periodic solutions for a degenerate parabolic equation

open access: yesApplied Mathematics Letters, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yuanyuan Ke, Rui Huang, Jiebao Sun
openaire   +2 more sources

Difference schemes for degenerate parabolic equations [PDF]

open access: yesMathematics of Computation, 1986
Diagonal dominant implicit-difference schemes approximating a porous media type class of multidimensional nonlinear equations are shown to generate semigroups in an approximate L
openaire   +1 more source

Waiting time phenomena for degenerate parabolic equations - A unifying approach

open access: yes, 2003
We present a new approach to establish the occurrence of waiting time phenomena for solutions to degenerate parabolic equations. Originally developed by the authors for the thin film equation, it may in fact be used for a broad class of degenerate ...
Günther Grün   +5 more
core   +1 more source

Asymptotic behavior for parabolic equations with interior degeneracy

open access: yesExamples and Counterexamples, 2022
The long time behavior of a class of degenerate parabolic equations in a bounded domain will be considered in the sense that the nonnegative diffusion coefficient a(x)is allowed to vanish in a set of positive measure in the interior of the domain.
María Astudillo   +3 more
doaj   +1 more source

NULL CONTROLLABILITY OF STRONGLY DEGENERATE PARABOLIC EQUATIONS

open access: yes, 2022
We consider linear one-dimensional strongly degenerate parabolic equations with measurable coefficients that may be degenerate or singular. Taking 0 as the point where the strong degeneracy occurs, we assume that the coefficient a = a(x) in the principal
Loyer, Romain   +5 more
core   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

open access: yesAdvanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi   +3 more
wiley   +1 more source

A Two-Species Cooperative Lotka-Volterra System of Degenerate Parabolic Equations

open access: yesAbstract and Applied Analysis, 2011
We consider a cooperating two-species Lotka-Volterra model of degenerate parabolic equations. We are interested in the coexistence of the species in a bounded domain.
Jiebao Sun, Dazhi Zhang, Boying Wu
doaj   +1 more source

Characterization of Aluminized Layers on Inconel‐738 Alloy: Microstructure, Modeling of Aluminizing Kinetics, and Thermal Behavior

open access: yesAdvanced Engineering Materials, EarlyView.
This study explored how effective nickel aluminide coatings are obtained in providing oxidation resistance applied to the Inconel 738 alloy, modeling with diffusion models. In the present study, kinetics and thermal behavior of the Inconel 738 alloy were studied by the low‐temperature thermoreactive aluminizing process, which was carried out at 625°C ...
Gozde Celebi Efe   +4 more
wiley   +1 more source

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