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- W1929068900 abstract "Sealing air is used in gas turbines to reduce the amount of hot gas that is ingested through the rim seals into the wheel-space between the turbine disk and its adjacent stationary casing. The sealing air attaches itself to the rotor, creating a buffering effect that reduces the amount of ingested fluid that can reach the surface of the rotor. In this paper, a theoretical model is developed, and this shows that the maximum buffering effect occurs at a critical flow rate of sealing air, the value of which depends on the seal geometry. The model, which requires two empirical constants, is validated using experimental data, obtained from infrared (IR) temperature measurements, which are presented in a separate paper. There is good agreement between the adiabatic effectiveness of the rotor estimated from the model and that obtained from the IR measurements. Of particular interest to designers is that significant ingress can enter the wheel-space before its effect is sensed by the rotor." @default.
- W1929068900 created "2016-06-24" @default.
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- W1929068900 date "2015-09-22" @default.
- W1929068900 modified "2023-09-24" @default.
- W1929068900 title "Theoretical Model to Determine Effect of Ingress on Turbine Disks" @default.
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- W1929068900 doi "https://doi.org/10.1115/1.4031315" @default.
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