Numerical Verification of Field Synergy Principle in Parallel Channels

Numerical simulation of turbulent flow with re-circulation was conducted by SIMPLE algorithm with two-equation k-ε model. Extension of computational region method and wall function method were quoted to regulate the whole computational region geometrically, given the inlet Reynold number keeps 10000, by changing the height of the solid obstacle. The result showed that the overall wall heat flux and heat exchange Nu increased with the decreased of the angle between the velocity vector and the temperature gradient. It verified that the field synergy principle based on 2-D boundary laminar flow may be applied to complex turbulent flow even with re-circulation.