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Article Dans Une Revue Nonlinear Analysis: Theory, Methods and Applications Année : 2012

Global existence for a hydrogen storage model with full energy balance

Résumé

A thermo-mechanical model describing hydrogen storage by use of metal hydrides has been recently proposed in [4] describing the formation of hydrides using the phase transition approach. By virtue of the laws of continuum thermo-mechanics, the model leads to a phase transition problem in terms of three state variables: the temperature, the phase parameter representing the fraction of one solid phase, and the pressure, and is derived within a generalization of the principle of virtual powers proposed by Frémond [11], accounting for micro-forces, responsible for the phase transition, in the whole energy balance of the system. Three coupled nonlinear partial differential equations combined with initial and boundary conditions have to be solved. The main difficulty in investigating the resulting system of partial differential equations relies on the presence of the squared time derivative of the order parameter in the energy balance equation, and actually this term was neglected in the analysis performed in [4]. Here, the global existence of a solution to the full problem is proved by exploiting known and sharp estimates on parabolic equations with right hand side in L 1. Some complementary results on stability and steady state solutions are also given.
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Dates et versions

hal-00848998 , version 1 (05-03-2018)

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Elena Bonetti, Pierluigi Colli, Philippe Laurencot. Global existence for a hydrogen storage model with full energy balance. Nonlinear Analysis: Theory, Methods and Applications, 2012, 75 (8), pp.3558--3573. ⟨10.1016/j.na.2012.01.015⟩. ⟨hal-00848998⟩
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