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Guarino, Roberto
École Polytechnique Fédérale de Lausanne
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Publications (5/5 displayed)
- 2023A numerical analysis of cross-flow reinforced impingement cooling through a U-shaped turbulator and a roughened target plate
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document
A numerical analysis of cross-flow reinforced impingement cooling through a U-shaped turbulator and a roughened target plate
Abstract
Efficient impingement cooling systems are crucial for turbomachinery applications. This study numerically explores eight different impingement cooling system geometries, focusing on the role ofturbulators on both hole and target plates. RANS simulations andthe DLR TRACE solver are utilized. On the hole plate a U-shapedturbulator (called ArcConic) uses the cross-flow to reinforce the jetby guiding it into the adjacent jet and thus increasing its effective jetReynolds number. The target plate turbulators impact flow patterns,turbulence and surface area. Our findings show a moderate pressuredrop and an 26% increase in heat flux. This research contributesvaluable design insights for developing efficient impingement cooling systems and addresses the practicality of manufacturing theseconfigurations using selective laser melting (SLM) technology.