Understanding Vanadium Ion Diffusion in Nafion Using an Atomistic Study and Microscopic Concentration Profiles [PDF]
MembranesThe functionality of ionomeric membranes is influenced by small changes of several parameters. Aqueous network formation by phase separation between the hydrophilic and hydrophobic parts of the polymer is one critical factor for water and ion transport ...
Sven Hampel +5 more
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Bernoulli-Euler Beam Unsteady Bending Model with Consideration of Heat and Mass Transfer [PDF]
Journal of Applied and Computational Mechanics, 2023 The article describes the problem of unsteady vibrations of a Bernoulli-Euler beam taking into account the relaxation of temperature and diffusion processes. The initial mathematical model includes a system of equations for unsteady bending vibrations of
Andrei Zemskov +2 more
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Analysis of outburst instability tendency of coal containing methane based on energy theory
Meikuang Anquan, 2022 In order to analyze the influence of unsteady diffusion characteristics of tectonic coal on energy instability, the steady and unsteady gas diffusion models were used to establish the functional relationship between the initial gas diffusion coefficient ...
LU Shouqing +7 more
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Unsteady Electromagnetic Elasticity of Piezoelectrics Considering Diffusion [PDF]
Известия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2020 The paper considers a model of the linear theory of deformation of elastic continuum with diffusion and piezoelectric effect taken into account, which describes the relationship between mechanical deformations, mass transfer, and the internal electric ...
Zemskov , Andrei Vladimirovich +2 more
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Evaluation of the application of different diffusion models for the methanation of CO/CO2 mixtures
Results in Engineering, 2022 CO/CO2-Methanation can contribute to the storage of intermittently produced renewable energy. In order to be able to design this heterogenous catalytic process well with models, a solid diffusion model is necessary.
Jannik Schumacher +3 more
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International Journal of Applied Mechanics and Engineering, 2022 The present work studies the effects of the physical parameter characterizing the laminar flow regime, namely the Strouhal number, on the evolution of the unsteady dynamic boundary-layer developed along a wedge surface.
Mohamed Bachiri, Ahcen Bouabdallah
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Modelling one-dimensional elastic diffusion processes in an orthotropic solid cylinder under unsteady volumetric perturbations [PDF]
Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2022 A polar-symmetric elastic diffusion problem is considered for an orthotropic multicomponent homogeneous cylinder under uniformly distributed radial unsteady volumetric perturbations.
Andrei V Zemskov +2 more
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An Elastodiffusive Orthotropic Euler–Bernoulli Beam Considering Diffusion Flux Relaxation
Mathematical and Computational Applications, 2019 This article considers an unsteady elastic diffusion model of Euler⁻Bernoulli beam oscillations in the presence of diffusion flux relaxation. We used the model of coupled elastic diffusion for a homogeneous orthotropic multicomponent continuum to ...
Dmitry Tarlakovskii, Andrei Zemskov
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A mimetic finite difference method using Crank-Nicolson scheme for unsteady diffusion equation
Revista de Matemática: Teoría y Aplicaciones, 2010 n this article a new mimetic finite difference method to solve unsteady diffusion equation is presented. It uses Crank-Nicolson scheme to obtain time approximations and second order mimetic discretizations for gradient and divergence operators in space ...
Iliana A. Mannarino
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Modeling the dynamics of fine dust fraction in the surface layer of the atmosphere [PDF]
BIO Web of Conferences, 2023 We investigated the operating conditions of excavator equipment, leading to unsteady dynamics of dust far from the pollution source. Wind transport of dust takes into account the non-uniform vertical wind profile. Diffusion movement is also determined by
Savin Egor +2 more
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