Abstract
The problem of mixed convection heat transfer along a vertical circular pin embedded in a fluid-saturated porous medium is analyzed based on the conjugate convection-conduction theory. The effects of non-Darcian flow phenomena, which are neglected in Darcy's law, on conjugate heat transfer are examined. These effects include the solid-boundary shear, inertial forces, variable porosity distribution, and transverse thermal dispersion. The numerical results show that the non-Darcian effects significantly alter the heat transfer predictions from those using the Darcy flow model. The boundary and inertia effects tend to decrease the heat transfer rate, while the near-wall porosity variation and thermal dispersion increase it. The effects of the conjugate convection-conduction parameter and the surface curvature on heat transfer characteristics of the pin are also presented
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