Heat transfer enhancement on the upper surface of a horizontal heated plate in a pool by ion injection from a metallic point

The EHD technique of ion injection yields high heat transfer enhancement, even at a considerable distance from the stagnation point, with negligible power consumption. An analogy with the thermal fluid dynamics of impinging submerged jets was drawn, showing remarkable similarities both in the Nu distribution along the plate and in the Nu vs. d curve. Particularly, a Reynolds number associated with the ion injection phenomenon was defined. Two proposed correlations for the Nusselt number showed strong agreement with the experimental data. Heat transfer impairment due to an upper confinement of the jet was observed.