2012
DOI: 10.1115/1.4006313
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Adiabatic Wall Temperature Evaluation in a High Speed Turbine

Abstract: Engine development requires accurate estimates of the heat loads. Estimates of the convective heat fluxes are particularly vital to assess the thermomechanical integrity of the turbomachinery components. This paper reports an experimental heat transfer research in a one and a half turbine stage, composed of a high-pressure turbine and a low-pressure vane. Measurements were performed in a compression tube facility at the von Karman Institute, able to reproduce engine representative Reynolds and Mach numbers. Do… Show more

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Cited by 21 publications
(5 citation statements)
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“…Recently, Pinilla et al investigated the effects of the adiabatic temperature on the heat load of the blades of a gas turbine [21]. Although the airfoil heat exchanger surfaces are rigorously nonadiabatic, the air tempera ture in a boundary layer of a high-speed compressible airflow on a solid surface is close to the adiabatic air temperature.…”
Section: Fig 5 Control Volumes For Inverse Heat Transfer Methods Basementioning
confidence: 99%
“…Recently, Pinilla et al investigated the effects of the adiabatic temperature on the heat load of the blades of a gas turbine [21]. Although the airfoil heat exchanger surfaces are rigorously nonadiabatic, the air tempera ture in a boundary layer of a high-speed compressible airflow on a solid surface is close to the adiabatic air temperature.…”
Section: Fig 5 Control Volumes For Inverse Heat Transfer Methods Basementioning
confidence: 99%
“…For a few selected geometries, the same geometry was investigated at two different wall temperatures; the entire cavity was set isothermal at 1133K, and then 1300K. The adiabatic convective heat transfer was then computed following the approach described by Pinilla et al [24]. Assuming a linear trend of the heat flux as a function of the wall temperature, the Nusselt number was computed using equations ( 8) and (9).…”
Section: Nusselt Number Comparison With Pipe Flowmentioning
confidence: 99%
“…Moreover, the thin film-instrumented plate can be heated by electric heaters, thus allowing measurements at different wall temperatures. 23 These measurements, in turn, can be used to calculate the adiabatic wall temperature and, in conjunction with the heat flux measurements, the Stanton number, which can be used as a further gauge of the boundary layer state.…”
Section: Ad Hoc Measurement Techniquesmentioning
confidence: 99%