INVESTIGADORES
FACHINOTTI victor Daniel
artículos
Título:
Linear tetrahedral finite elements for thermal shock problems
Autor/es:
VICTOR D. FACHINOTTI; MICHEL BELLET
Revista:
International Journal of Numerical Methods for Heat & Fluid Flow
Editorial:
Emerald Group Publishing Limited
Referencias:
Año: 2006 vol. 16 p. 590 - 601
ISSN:
0961-5539
Resumen:
The thermal analysis using linear standard tetrahedral finite elements may be affected by spurious local extrema in the regions affected by thermal shocks, in such a severe way to directly discourage the use of these elements. The present work proposes a slight modification to the discrete heat equation in order to obtain a system matrix in M-matrix form, which assures an oscillation-free solution. The performance of this method is evaluated by means of test case with analytical solution, as well as an industrial application, for which a well-behaved numerical solution is available.
