Artigo
Improved lumped models for transient heat conduction in a slab with temperature-dependent thermal conductivity
Registro en:
0307-904X
10.1016/j.apm.2007.11.007
Autor
Su, Ge
Tan, Zheng
Su, Jian
Institución
Resumen
This work reports improved lumped-parameter models for transient heat conduction in a slab with temperature-dependent thermal conductivity. The improved lumped models are obtained through two point Hermite approximations for integrals. For linearly temperature-dependent thermal conductivity, it is shown by comparison with numerical solution of the original distributed parameter model that the higher order lumped model (H1;1=H0;0 approximation) yields significant improvement of average temperature prediction over the classical lumped model. A unified Biot number limit depending on a single dimensionless parameter b is given both for cooling and heating processes. Indisponível.
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