Experimental investigation of convective heat transfer from compact heat sources in the presence of EHD

Heat transfer enhancement from cylindrical heat sources as compact electronic components established at the bottom of duct with in-line arrangement and also from the bottom by electrohydrodynamic (EHD) actuator has been investigated experimentally. Air flow is drawn to the duct with various Reynolds numbers that include natural convection and forced convection. Wire electrodes are arranged in transverse direction and perpendicular to the main flow with two various arrangements and high voltages are applied up to 30 kV in the wires. The results revealed that the second electrode arrangement (three wires over the ribs) is more effective due to more enhancement of heat transfer and less corona power consumption in comparison with the first one (four wires between the ribs). Also electric field is more effective for low Reynolds numbers

کلیدواژه ها:

Heat transfer enhancement ، Convection ، Electrohydrodynamic (EHD) ، Corona wind