Thermal dispersion driven by the spontaneous imbibition process
Por:
Bautista O., Méndez F., Bautista E.G.
Publicada:
1 dic 2010
Resumen:
In this work, we have theoretically analyzed the thermal dispersion process under the influence of the spontaneous imbibition of a liquid trapped in a capillary element, considering the presence of a uniform temperature gradient. The capillary element is represented by a porous medium which is initially found at temperature To and pressure P(0). Suddenly, the lower part of the porous medium touches a liquid reservoir at temperature T(1) and pressure P(0). This contact between both phases, in turn causes spontaneously the imbibition process. Using a one-dimensional formulation of the average conservation laws, we derive the corresponding nondimensional momentum and energy equations. The numerical solutions permit us to evaluate the position and velocity of the imbibition front as well as the temperature profiles and Nusselt numbers. The above results are shown by taking into account the influence of three dimensionless parameters: the ratio of the characteristic thermal time to the char
Filiaciones:
Bautista O.:
SEPI - ESIME Azcapotzalco IPN, México, DF 02550, Mexico
Méndez F.:
Univ Nacl Autonoma Mexico, Fac Ingn, Mexico City 04510, DF, Mexico
Bautista E.G.:
SEPI - ESIME Azcapotzalco IPN, México, DF 02550, Mexico
Bronze
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