Computer simulation of hydrogen permeability of structural materials through protective coating defect

[摘要] 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 estimate the limiting factors and to significantly reduce the expenses of experimental research by means of numerical simulation for different parameters and experimental conditions (including extreme ones). Classical diffusion models are often insufficient. The paper is devoted to the models and numerical solution of the boundary-value problems of hydrogen permeability taking into account nonlinear sorption-desorption dynamics on the surface. Algorithms based on difference approximations. The results of computer simulation of the hydrogen flux from a structural material sample are presented.

[发布机构] Institute of Applied Mathematical Research, Karelian Research Centre, Russian Academy of Science, 11 Pushkinskaya street, Petrozavodsk; 185910, Russia^1

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Desorption dynamics;Difference approximation;Experimental conditions;Experimental research;Hydrogen permeability;Intensive research;Nonlinear sorption;Numerical solution