Artículos de revistas
Linear tetrahedral finite elements for thermal shock problems
Fecha
2006-12Registro en:
Fachinotti, Victor Daniel; Bellet, Michel; Linear tetrahedral finite elements for thermal shock problems; Emerald Group Publishing Limited; International Journal Of Numerical Methods For Heat & Fluid Flow; 16; 5; 12-2006; 590-601
0961-5539
CONICET Digital
CONICET
Autor
Fachinotti, Victor Daniel
Bellet, Michel
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