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The effect of jet-to-jet spacing on the local Nusselt number for confined circular air jets vertically impinging on a flat plate is investigated. Five jets in equilaterally staggered arrays are considered. The surface heat flux on the plate is 1500 Wm-2. The jet diameter is 3 mm. Three different jet Reynolds numbers are individually considered. The influence of jet-to-jet spacing, Re and jet height on the stagnation Nusselt number of the centre jet is experimentally investigated. An optimum ratio of jet-to-jet spacing to jet diameter is obtained.
Details
- Original title: Optimum jet-to-jet spacing of heat transfer for staggered arrays of impinging air jets.
- Record ID : 2002-1781
- Languages: English
- Source: International Journal of Heat and Mass Transfer - vol. 44 - n. 21
- Publication date: 2001/11
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Indexing
- Themes: Mass transfer
- Keywords: Jet; Geometry; Fluid; Mass transfer; Heat transfer; Plane surface; Optimization
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