Abstract
In this work, we consider, from the numerical point of view, a poro-thermoelastic problem. The thermal law is the so-called of type III and the microtemperatures are also included into the model. The variational formulation of the problem is written as a linear system of coupled first-order variational equations. Then, fully discrete approximations are introduced by using the classical finite-element method and the implicit Euler scheme. A discrete stability property and an a priori error estimates result are proved, from which the linear convergence of the algorithm is derived under suitable additional regularity conditions. Finally, some one- and two-dimensional numerical simulations are presented to show the accuracy of the approximation and the behavior of the solution.
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Acknowledgements
The work of J.R. Fernández was partially supported by Ministerio de Ciencia, Innovación y Universidades under the research project PGC2018-096696-B-I00 (FEDER, UE). The work of R. Quintanilla was supported by projects “Análisis Matemático de Problemas de la Termomecánica” (MTM2016-74934-P), (AEI/FEDER, UE) of the Spanish Ministry of Economy and Competitiveness, and “Análisis matemático aplicado a la termomecánica” (Ref. PID2019-105118GB-I00), (AEI/FEDER, UE) of the Spanish Ministry of Science, Innovation and Universities.
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Bazarra, N., Fernández, J.R. & Quintanilla, R. Numerical analysis of a type III thermo-porous-elastic problem with microtemperatures. Comp. Appl. Math. 39, 242 (2020). https://doi.org/10.1007/s40314-020-01248-x
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DOI: https://doi.org/10.1007/s40314-020-01248-x
Keywords
- Type III thermoelasticity with voids
- Microtemperatures
- Numerical approximation
- Error estimates
- Numerical solutions