Results 11 to 20 of about 139,050 (252)

Maximum principle for the finite element solution of time dependent anisotropic diffusion problems [PDF]

open access: yesNumerical Methods for Partial Differential Equations, 2013
Preservation of the maximum principle is studied for the combination of the linear finite element method in space and the $\theta$-method in time for solving time dependent anisotropic diffusion problems. It is shown that the numerical solution satisfies
Huang, Weizhang, Li, Xianping
core   +2 more sources

Maximum principles for anisotropic elliptic inequalities [PDF]

open access: yesNonlinear Analysis: Theory, Methods & Applications, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
R. FORTINI   +2 more
openaire   +2 more sources

THIRD ORDER MAXIMUM-PRINCIPLE-SATISFYING DG SCHEMES Third Order Maximum-Principle-Satisfying DG schemes for Convection-Diffusion problems with Anisotropic Diffusivity DIFFUSIVITY [PDF]

open access: yesJournal of Computational Physics, 2019
For a class of convection-diffusion equations with variable diffusivity, we construct third order accurate discontinuous Galerkin (DG) schemes on both one and two dimensional rectangular meshes. The DG method with an explicit time stepping can well be applied to nonlinear convection-diffusion equations.
Yu, Hui, Liu, Hailiang
openaire   +4 more sources

Discrete Maximum Principle for the Weak Galerkin Method for Anisotropic Diffusion Problems [PDF]

open access: yesCommunications in Computational Physics, 2015
AbstractA weak Galerkin discretization of the boundary value problem of a general anisotropic diffusion problem is studied for preservation of the maximum principle. It is shown that the direct application of the M-matrix theory to the stiffness matrix of the weak Galerkin discretization leads to a strong mesh condition requiring all of the mesh ...
Huang, Weizhang, Wang, Yanqiu
openaire   +2 more sources

A method to analyze the influence of mechanical strain on dermal collagen morphologies

open access: yesScientific Reports, 2021
Collagen fibers and their orientation play a major role in the mechanical behavior of soft biological tissue such as skin. Here, we present a proof-of-principle study correlating mechanical properties with collagen fiber network morphologies. A dedicated
Maximilian Witte   +4 more
doaj   +1 more source

A Dielectric Elastomer Actuator-Driven Vibro-Impact Crawling Robot

open access: yesMicromachines, 2022
Over the last decade, many bio-inspired crawling robots have been proposed by adopting the principle of two-anchor crawling or anisotropic friction-based vibrational crawling.
Chuang Wu   +3 more
doaj   +1 more source

Enforcing the non-negativity constraint and maximum principles for diffusion with decay on general computational grids [PDF]

open access: yes, 2010
In this paper, we consider anisotropic diffusion with decay, and the diffusivity coefficient to be a second-order symmetric and positive definite tensor.
Arnold   +65 more
core   +1 more source

Electrical resistivity of three-phase cracked rock-soil medium and its anisotropic changes caused by crack changes

open access: yesGeomatics, Natural Hazards & Risk, 2020
Electrical resistivity of sedimentary rock-soil is highly variable and governed mainly by a wide range of properties including resistivities of both solid matrix and fluid, cracks or pores, fluid saturation, and crack fabric (e.g.
Tao Xie, Qing Ye, Jun Lu
doaj   +1 more source

THE PROBLEM OF CRACK OPENING WIDTH AND STIFFNESS OF REINFORCED CONCRETE STRUCTURES, BUILDINGS AND CONSTRUCTIONS

open access: yesInternational Journal for Computational Civil and Structural Engineering, 2023
The article defines the main results for the development of reinforced concrete mechanics. In the isotropic medium between the cracks is used "first object - flows-blocks", "second object - main cracks" and the effect of reinforced concrete, the ...
Vladimir Kolchunov
doaj   +1 more source

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