مشخصات پژوهش

This investigation employed computational modeling to analyze forced convective heat transfer from a uniformly heated solid cylindrical object, enveloped by a permeable layer, situated within a transverse fluid stream. The fluid dynamics and thermal behavior within the porous material were modeled utilizing the Darcy-Brinkman-Forchheimer equations, coupled with the local thermal non-equilibrium ( ) paradigm. The impact of a spectrum of parameters, including the Darcy number ( ⁻ ⁶ to ⁻ ), dimensionless interphase heat transfer coefficient ( to ), effective thermal conductivity ratio ( to ), Reynolds number ( to ), Prandtl number ( , , , ), and the non-dimensional thickness of the porous layer ( , , , ), on the fluid flow characteristics and resultant heat exchange from the cylinder was explored. Additionally, the applicability of the local thermal equilibrium ( ) hypothesis across these diverse parameter ranges was examined. The research illuminated the spatial distribution of thermal energy generation, a result of inter-phase heat exchange. The mean Nusselt number at the solid cylinder's surface was quantified using both and methodologies. Moreover, the absolute temperature disparity between the fluid and solid phases was scrutinized to ascertain the conditions under which the assumption remains valid, with results suggesting that is justifiable when this temperature difference is below unit.