Experimental study of heat transfer effects due to impinging slot jets confined by inclined plates

In this study, the effects of heat transfer in turbulent flow fields of impinging slot jet confined by inclined plates were investigated experimentally. Temperature distributions on the impingement plates were obtained with thermal camera. Temperature measurements were carried out on the impingement plate in four different impinging slot jet flow setups confined by plates with inclination angles of θ = 0°, 15°, 30° and 45°, with an inter-plate spacing of 0.5 ≤ H/W ≤ 6 and a Reynolds number range of 10000 ≤ Re ≤ 30000. The effects of confinement plate inclination angle, intervals among plates and Reynolds number on the Nusselt distributions of the impingement plates were examined. It was observed that Nusselt values increased with increasing Reynolds number and decreased with increasing intervals among plates. There are secondary top points in the Nusselt distributions on the impingement plate for low inclined confinement plates (θ=0° and θ=15°) and low inter-plate spacings (H/W=0. 5 and H/W=1), while there is an increase in the Nusselt numbers at the ends of the impingement plate for high inclined confinement plates (θ=30° and θ=45°) and low inter-plate spacings (H/W=0.5 and H/W=1).