INV SUPERIOR JUBILADO
TARZIA domingo alberto
artículos
Título:
Simultaneous determination of two unknown thermal coefficients of a semi-infinite porous material through a desublimation moving boundary problem with coupled heat and moisture flows
Autor/es:
E.A. SANTILLAN MARCUS - M.F. NATALE - D.A. TARZIA
Revista:
JP Journal of Heat and Mass Transfer
Editorial:
Pushpa Publishing House
Referencias:
Año: 2008 vol. 2 p. 73 - 116
ISSN:
0973-5763
Resumen:
An analytical model of freezing (desublimation) of moisture in a porous medium with an overspecified condition at the fixed face is considered in order to determine simultaneously two unknown thermal coefficients of a semi-infinite phase-change material. When the evaporation front is experimentally determined, a moving boundary problem with coupled heat and moisture flows (Luikov type equations) with eight heat parameters can be considered. We obtain the explicit expression of the temperature of the two phases and the mass-transfer potential in the humid region, and we also give formulae for the two unknown thermal coefficients and the necessary and sufficient condition for the parameters in order to obtain the existence of a solution for 28 different cases.
