Convective Heat Transfer over a Wall Mounted Cube Using Large Eddy Simulation

Abstract

Fluid flow and convective heat transfer over wall mounted cube have been studied numerically using Large Eddy Simulation. Surface of wall mounted cube and plane floor has a constant heat flux. Two subgrid scale models were used in this study; Wall-Adapting Eddy viscosity (WALE) and Dynamic Smagorinsky (DS). The numerical results were compared with the experimental data of Nakamura et al [2] that showed DS model has better results toward WALE model. Results contain the plots of time averaged normalized streamwise velocity and Reynolds stress in different positions, Temperature contours, local Nusselt number over the surfaces of cube and some characteristics of flow field and heat transfer. The local convective heat transfer from the surfaces of the cube and plate are directly related to the complexity of flow field.