Abstract
The multiple jets were accompanied with the spent flow and its directions were also very important to affect the flow and heat transfer. We shows the effect of the spent flow on heat transfer characteristics of multiple jets impinged to confined rectangular duct setting the side plate by change its position from jets origin. The flow and heat transfer coefficients were measured by means of oil-method and infrared image technique, respectively. It was found that the heat transfer was characterized with the spent flow and vortex streak formed at the comer surrounded by the side and the impingement plates.
