Results 31 to 40 of about 267,847 (164)

Homogenized Models with Memory Effect for Heterogeneous Periodic Media

open access: yesJournal of Optimization, Differential Equations and Their Applications, 2022
The homogenization of initial boundary value problems for heat conduction equations with asymptotically degenerate rapidly oscillating periodic coefficients are considered.
Gennadiy V. Sandrakov   +1 more
doaj   +1 more source

Equivalent Boundary Conditions for Heterogeneous Acoustic Media

open access: yesTrends in Computational and Applied Mathematics, 2014
In this work, we have worked on possibilities to model artificial boundaries needed in the simulation of wave propagation in acoustic heterogeneous media.
Manuela Longoni de Castro   +2 more
doaj   +1 more source

Quasistatic Crack Propagation in Heterogeneous Media [PDF]

open access: yesPhysical Review Letters, 1997
The dynamics of a single crack moving through a heterogeneous medium is studied in the quasi-static approximation. Equations of motion for the crack front are formulated and the resulting scaling behaviour analyzed. In a model scalar system and for mode III (tearing) cracks, the crack surface is found to be self affine with a roughness exponent of ...
Ramanathan, Sharad   +2 more
openaire   +3 more sources

Mathematical Treatment of Saturated Macroscopic Flow in Heterogeneous Porous Medium: Evaluating Darcy’s Law

open access: yesHydrology, 2019
We present a rigorous mathematical treatment of water flow in saturated heterogeneous porous media based on the classical Navier-Stokes formulation that includes vorticity in a heterogeneous porous media.
R. William Nelson   +1 more
doaj   +1 more source

Reversible Magnetomechanical Modeling of Heterogeneous Media [PDF]

open access: yesJournal of Superconductivity and Novel Magnetism, 2014
Localization and homogenization of the magnetomechanical fields in heterogeneous media are discussed. The magnetoelastic modeling for magnetic polycrystals is extended from the description of the singlecrystal modeling. This model is then applied to the prediction of the behavior of dual-phase steels.
Wang, Xingjun   +4 more
openaire   +1 more source

Disorder-induced Fickian, yet non-Gaussian diffusion in heterogeneous media

open access: yesPhysical Review Research, 2020
Fickian yet non-Gaussian diffusion is observed in several biological and soft matter systems, yet the underlying mechanisms behind the emergence of non-Gaussianity while retaining a linear mean-square displacement remain speculative.
Indrani Chakraborty, Yael Roichman
doaj   +1 more source

Wavefield Evolution and Arrival Behavior of Elastic Wave Propagation in Two-Dimensional Fractional Brownian Fields

open access: yesFractal and Fractional
The fractional Brownian field is often used to reproduce the fractal properties of complex heterogeneous media, which closely represent real-world geological materials.
Shuaifeng Wang, Zixin Zhang
doaj   +1 more source

Waves induced by heterogeneity in oscillatory media

open access: yesNew Journal of Physics, 2020
Various behaviours of nonlinear wave propagation and competition have been discussed and investigated extensively and meticulously, especially when the media are homogeneous. However, corresponding studies in heterogeneous media are much scarcer. In this
Chunli Huang   +3 more
doaj   +1 more source

New Insights Into Complex Interactions Between Heterogeneity and Wettability Influencing Two‐Phase Flow in Porous Media

open access: yesGeophysical Research Letters, 2020
Coupled effects of wettability and pore geometry on pore‐scale dynamics of immiscible two‐phase fluid displacement were investigated using a multiphase lattice Boltzmann model in homogeneous and heterogeneous porous media under a wide range of contact ...
Sahar Bakhshian   +3 more
doaj   +1 more source

Minor Media - Heterogenic Machines

open access: yesM/C Journal, 1999
1. A Minor Philosopher According to Guattari and Deleuze's definition, a 'minor literature' is the literature of a minority that makes use of a major language, a literature which deterritorialises that language and interconnects meanings of the most disparate levels, inseparably mixing and implicating poetic, psychological, social and
openaire   +1 more source

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