Results 11 to 20 of about 2,392,562 (320)
Horizontally isotropic double porosity convection [PDF]
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2019 We analyse instability and nonlinear stability in a layer of saturated double porosity medium. In a double porosity or bidisperse porous medium, there are normal pores which give rise to a macroporosity. But, there are also cracks or fissures in the solid skeleton and these give arise to another porosity known as micro porosity.
B. Straughan
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Petroleum Science, 2019 Phenomena of reflection and refraction of plane harmonic waves at a plane interface between an elastic solid and double-porosity dual-permeability material are investigated.
M. Kumar, M. S. Barak, M. Kumari
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Soft Hydrogels with Double Porosity Modified with Rgds for Tissue Engineering.
Macromolecular Bioscience, 2023 In this study, we developed and characterized novel biodegradable soft hydrogels with dual porosity based on N-(2-hydroxypropyl) methacrylamide (HPMA) copolymers cross-linked by hydrolytically degradable linkers.
Bohumila Podhorská +10 more
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A water retention model accounting for void ratio changes in double porosity clays
Acta Geotechnica, 2021 This paper presents a constitutive model that predicts the water retention behaviour of compacted clays with evolving bimodal pore size distributions. In line with previous research, the model differentiates between the water present inside the saturated
G. de la Morena +3 more
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On the theory of thermoelastic materials with a double porosity structure
Journal of thermal stresses, 2021 The linear theory of thermoelastic materials with a double porosity structure is considered. In the first part of the article we establish some basic theorems in the dynamical theory.
S. De Cicco, D. Ieşan
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Nonlinear “double porosity” type model
Comptes Rendus. Mathématique, 2002 We consider a variational problem inf u∈H 1 (Ω) ∫ Ω {a ϵ |∇u ϵ | m +g|u ϵ | m - mf ϵ u ϵ }dx in a bounded domain Ω=ℱ (ϵ) ∪ℳ ¯ (ϵ) with a microstructure ℱ (ϵ) which is not in general periodic; aε=aε(x) is of order 1 in ℱ (ϵ) and sup x∈ℳ (ϵ) a ϵ (x)→0 as ε→0. A homogenized model is constructed.
Pankratov, Leonid, Piatnitski, Andrey
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Finite element analysis of the effect of porosity on residual stress in 2024 aluminium alloy GTAW
Materials Research Express, 2020 Simulations of the welding process for butt joints using finite element analysis (FEA) of the effect of porosity are presented. The metal used was aluminium alloy (grade 2024), and the filler material was alloy ER5356.
Pattarawadee Poolperm +2 more
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Strip load on transversely isotropic elastic double porosity media with strong permeability contrast
Advances in Geo-Energy Research, 2021 : In double porosity media, fluid could flow through the distributed micro-fractures at a larger scale as well as through the nanopores of the organic matrix at a smaller scale, while fluid mass could be transferred between them.
Qi Zhang
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Earth and Space Science, 2020 In this study, shear wave speed and related physical properties were measured for 21 seafloor sediment cores collected in the northern South China Sea.
Guangming Kan +6 more
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Some remarks on single- and double-porosity modeling of coupled chemo-hydro-mechanical processes in clays [PDF]
, 2016 Active clays are known to possess an aggregated structure, which justifies the use of double-porosity models to reproduce their behavior. Simulation of chemo-mechanical processes requires instead the introduction of a relevant number of coupled ...
Della Vecchia, Gabriele, Musso, Guido
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