Heat Transfer Enhancement for Flows in a Channel With Corona Wind Generator

Abstract

Heat transfer enhancement using corona wind generators in a square channel has been numerically examined in this study. Three configurations of the corona wind generators (separately with 4, 12, and 28 pins) are investigated for their effectiveness in the enhancement of heat transfer as well as the pumping power requirement. To achieve the maximum enhancement in heat transfer, the emitting electrodes of the corona wind generator are flush mounted on the channel walls so that the corona wind produced directly perturbs the boundary layer. The Reynolds number considered varies in a range between 200 and 2000. The influence of electric field on the flow and temperature fields is examined for a wind range of operating conditions. The results show that EHD technique has a great potential for many engineering applications.

Numerical simulation of a wire–plate solid-state fan for ultra-quiet museum display cases

“…Several studies exist on solidstate fans with different structures, including needleplate, wire-pipe, needle-pipe, and so on. [7][8][9][10][11] All studies show that the solid-state fan can significantly enhance heat transfer. With regard to the wire-plate solid-state fan, Tada et al 12 examined heat transfer, applying solidstate fans with electrodes between two plates.…”