Результаты поиска по 'hydrogen interaction with solids':
Найдено статей: 2
  1. Zaika Y.V., Kostikova E.K.
    Modeling of thermal desorption and hydrogen permeability
    Computer Research and Modeling, 2014, v. 6, no. 5, pp. 679-703

    In the context of problems of hydrogen and thermonuclear power engineering intensive research of the hydrogen isotopes properties is being conducted. Mathematical models help to specify physical-chemical ideas about the interaction of hydrogen isotopes with structural materials, to discover the limiting factors. Classical diffusion models are often insufficient. The paper is devoted to the models and numerical solution of the boundary-value problems of hydrogen thermodesorption and permeability taking into account nonlinear sorption-desorption dynamics on the surface and reversible capture of hydrogen atoms in the bulk. Algorithms based on difference approximations. The results of computer simulation of the hydrogen flux from a structural material sample are presented.

    Keywords: hydrogen interaction with solids, surface processes, nonlinear dynamical boundary-value problems, numerical simulation.
    Views (last year): 3.
  2. Zaika Y.V., Rodchenkova N.I., Sidorov N.I.
    Modeling of H2-permeability of alloys for gas separation membranes
    Computer Research and Modeling, 2016, v. 8, no. 1, pp. 121-135

    High-purity hydrogen is required for clean energy and a variety of chemical technology processes. A considerable part of hydrogen is to be obtained by methane conversion. Different alloys, which may be wellsuited for use in gas-separation plants, were investigated by measuring specific hydrogen permeability. One had to estimate the parameters of diffusion and sorption to numerically model the different scenarios and experimental conditions of the material usage (including extreme ones), and identify the limiting factors. This paper presents a nonlinear model of hydrogen permeability in accordance with the specifics of the experiment, the numerical method for solving the boundary-value problem, and the results of parametric identification for the alloy V85Ni15.

    Keywords: hydrogen interaction with solids, surface processes, boundary-value problems, numerical simulation.
    Views (last year): 1. Citations: 7 (RSCI).

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