Thermal Dispersion and Convection Heat Transfer during Laminar Transient Flow in Porous Media

  • Pathak, M. G.
  • Ghiaasiaan, S. M. (Seyed M.)
Publication date
May 2008
Publisher
ICC Press

Abstract

Presented at the 16th International Cryocooler Conference, held May 17-20, 2008 in Atlanta, Georgia.Solid-fluid thermal interactions during unsteady flow in porous media play an important role in the regenerators of pulse tube cryocoolers. Pore-level thermal processes in porous media under unsteady flow conditions are poorly understood. The objective of this investigation was to study the pore-level thermal phenomena during pulsating and unidirectional sinusoidal flow through a generic, two-dimensional porous medium by numerical analysis. Furthermore, an examination of the effects of flow pulsations on the thermal dispersion and heat transfer coefficient that are encountered in the standard, volume-average energy equations for porous media ...

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