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- W4327831333 abstract "Impinging jets have emerged as a prominent cooling technology in the gas turbine industry. With the addition of fluidic oscillators as heat removal devices, steady-state impinging jets can be converted to sweeping impinging jets, presenting an opportunity to improve the heat transfer performance of current impinging jets by covering a larger cooling surface area on the leading edge of a gas turbine blade. Sweeping jets are self-oscillating devices that operate based on the Coanda effect, making them self-sustaining. In this study, the flow and heat transfer performance of an array of seven steady and sweeping impinging jets were investigated using the unsteady Reynolds-averaged Navier-Stokes turbulent SST k-ω model. The sweeping jet impingement improved the heat removal performance by cooling a larger surface area of the leading edge with a constant heat flux and by improving the overall time-averaged cooling effectiveness. Compared with the steady jet case, the sweeping jet case shows an improvement in heat transfer of 12.2%. Further, the use of fluidic oscillators (sweeping jets) produced a more uniform mass flow rate distribution from all jets compared with a simple jet." @default.
- W4327831333 created "2023-03-19" @default.
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- W4327831333 date "2023-07-01" @default.
- W4327831333 modified "2023-10-18" @default.
- W4327831333 title "A comparison of oscillating sweeping jet and steady normal jet in cooling gas turbine leading edge: Numerical analysis" @default.
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- W4327831333 doi "https://doi.org/10.1016/j.ijheatmasstransfer.2023.124041" @default.
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