EFFECT OF ADDED VARIED ANGLE WINGLET TO ENHANCE HEAT TRANSFER IN HEATED CHANNEL

Abstract

An experimental study to enhancement heat transfer by generate longitudinal vortex with rectangular winglet has been investigated. Two angles presented (〖70〗^°,〖35〗^° ) in rectangular winglet placed at the entrance of heated channel the study shows the pointing (Down and Upstream) and the effect of attack angle depends on the heat transfer (Nu)and the friction factor(f ) for each angle and two sides ,the Reynolds number range from 5000 – 23000. It was found that angle was significant effect on the heat transfer coefficient and the 〖70〗^° angle more efficient in heat transfer in high velocity and the pointing downstream make good result in heat transfer.