Article ID Journal Published Year Pages File Type
668853 International Journal of Thermal Sciences 2011 8 Pages PDF
Abstract
The paper presents an experimental investigation of heat transfer obtained with impinging gas jets. Lobed nozzles are tested. The study parameters are the lobe geometry, the jet Reynolds number, Re, and the normalised standoff distance, z/D. The quantitative infrared thermography associated with the thermofoil technique is applied. At high Reynolds number (Re ≥ 15,000)) and small normalised standoff (z/D ≤ 1), the three-lobe nozzle affords performance better than the other nozzles. As the normalised standoff distance increases and exceeds z/D = 7, the 4-lobe yields better performance.
Related Topics
Physical Sciences and Engineering Chemical Engineering Fluid Flow and Transfer Processes
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