Akademik Veri Yönetim Sistemi
7th International Zeugma Conference on Scientific Research, Gaziantep, Türkiye, 21 - 23 Ocak 2022, ss.564
In this study, the flow and forced convection heat transfer parameters over a circular cylinder immersed in limited Newtonian fluid in two-dimensional steady flow were numerically reported. The cylinder is maintained at a constant temperature on its periphery as thermal boundary conditions, over a Reynolds number of 5, 10 and 40, at a fixed Prandtl number of 0.71, where the Darcy-Brinkmann model has been used to modeling the porous medium underDarcy number of 10-3 at a fixed porosity of 0.9. The current investigation aims to numerically assess the effects of the present of the porous surfaces around the cylinder in the creeping and symmetry regimes on the heat transfer characteristics. The numerical methodology utilized in this study is based on the finite volume method for two-dimensional fluid dynamics equations with 200x200 grid points in both directions. The convective terms of the momentum and energy equations were discretized using the second-order upwind technique, while other elements were discretized using the central difference scheme.
The predicted results suggest that the presence of the porous surface around the cylinder showed a marked enhancement in the average Nusselt number, it should be noted that this enhancement in more pronounced as the surface of the porous media increased in the symmetry regime.