Large-eddy simulations of mixing hot and cold fluids in tee junctions with/without sintered porous medium for various temperature differences

Abstract

Paper presented at the 8th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Mauritius, 11-13 July, 2011.Large-eddy simulation is applied to simulate the mixing of the hot and cold fluids in a T-junction packed with periodic array of sintered cooper spheres based on the fluid-solid coupling method. The numerical results reveal that the thermal striping phenomenon is obvious and the temperature and velocity fluctuations are weakened in porous media region. Compared the results of cases with the same physical models and velocity conditions, the increasing temperature difference between the main inlet and the branch inlet does not impact on the hot and cold fluid flow and heat transfer obviously due to change the hot and cold fluid duct in T-junctions.