Title: Numerical simulation of diffusion behaviour of hydrogen in a single layer of material

Authors: Limin Zhao; Yongfeng Li

Addresses: Management Institute, Xinxiang Medical University, East of JinSui Road, Xinxiang 453003, China ' School of Mechanical and Electrical Engineering, Henan Institute of Science and Technology, East of HuaLan Road, Xinxiang 453000, China

Abstract: Modelling of hydrogen permeating through a metal as a function of time and displacement has been performed by means of the forward difference method over a rectangular grid. Varying diffusion times and specimen thickness, concentrations in a single layer of material have been produced using repeated iterative procedures. Good agreement was found between this numerical solution using the forward difference method and results of permeation current density-time profiles from experimental data. The comparison confirmed that analysing in detail the hydrogen diffusion behaviour in a single layer of material is feasible using this numerical approach. This approach can also provide a way to study diffusion behaviour of hydrogen in composite materials.

Keywords: hydrogen diffusion; numerical simulation; hydrogen concentration; forward difference method; modelling; composite materials; composites; permeation current density-time profiles.

DOI: 10.1504/IJMPT.2013.056291

International Journal of Materials and Product Technology, 2013 Vol.46 No.2/3, pp.205 - 213

Received: 09 Oct 2012
Accepted: 29 Dec 2012
Published online: 21 Jun 2014 *

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