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- W4387144290 abstract "Abstract Jet impingement heat transfer is commonly employed in turbine cooling. The current paper aims to experimentally analyze the enhancement of the heat transfer rate when using a turbulent impinging jet with different nozzle geometries that alter the nozzle exit flow condition and/or enhance unsteadiness/turbulence and induce it into the jet-flow. The nozzle geometry is altered by adding annular trips or axial trips or swirl trips on the internal surface of the nozzle. The measurements are based on a steady state approach with a uniform heat flux boundary condition and infra-red imaging to determine surface temperatures. Data on the local and average Nusselt number are reported for different jet-to-target spacings (H/D = 1.5–12) and Reynolds numbers (Re = 10000–97000). These results are compared with the corresponding baseline round jet geometry. It is observed that nozzles with swirl turbulators provide the greatest enhancement in surface heat transfer." @default.
- W4387144290 created "2023-09-29" @default.
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- W4387144290 date "2023-06-26" @default.
- W4387144290 modified "2023-10-18" @default.
- W4387144290 title "Enhancements to Impingement Heat Transfer Through Nozzle Geometry Modifications" @default.
- W4387144290 doi "https://doi.org/10.1115/gt2023-104178" @default.
- W4387144290 hasPublicationYear "2023" @default.
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