CFD Investigation of Influence of SpanwisePitch on Local Heat Transfer Distribution forIn-Line Array of Impinging Jets for MediumCrossflow

摘要: Jet impingement systems provide an effective means for the enhancement of convective processes due to high heat and mass transfer rates that can be achieved. The range industrial applications impinging jets are being used in is wide. In annealing tempering materials, jet finding use cooling hot metal, plastic, or glass sheets as well drying paper fabric. Compact exchangers, with aeronautical automotive sector, often multiple dense arrangements. gas turbine applications, has been routinely a long time. Because increased thermal efficiency at inlet temperatures, many components, such rotor disks, vanes blades, combustion chamber walls, operated temperatures above highest allowable material limits. order assure durability operating intervals, concepts required these highly loaded components.The current work involves studying effect spanwise jet-to-jet spacing on local distribution in-line rectangular array confined circular air surface parallel plate computationally. Shear Stress Transport (SST) k-ω turbulence model used. flow, after impingement, constrained exit two opposite directions from passage formed between target plate. Mean Reynolds numbers based nozzle diameter (d) covered 10,000 jet-to-plate spacings studied d, 2d 3d. Spanwise pitches considered 2d, 4d 6d steps keeping streamwise pitch 5d. Length-to-diameter ratio nozzles 1.0. For all configurations, jet-plates have ten rows direction six each row. results obtained validated against experimental data available open literature.