EXPERIMENTAL INVESTIGATION AND FLOW STRUCTURE ANALYSIS OF DELTA WING
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Abstract
In this study the increase of heat transfer in a rectangular channel with triangular delta wing vortex generators is evaluated. These vortex generators can be mounted on the fin surfaces by either welding, punching or embossing. These vortex generators introduce stream wise longitudinal vortices. These vortices disrupted the growth of the thermal boundary layer and serves to bring about heat transfer augmentation between the fluid and the fin surfaces. Air is taken as the working fluid. The flow system is supposed to be turbulent because, usually the fin spacing is small and the mean velocity is such that the Reynolds numbers of interest are below the critical Reynolds number. The constant heat flux boundary condition is used.
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