Profile Aerodynamics of an Oscillating Low-Pressure–Turbine Blade

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OriginalspracheEnglisch
Seiten (von - bis)68-75
Seitenumfang8
FachzeitschriftInternational Journal of Gas Turbine, Propulsion and Power Systems
Jahrgang11
Ausgabenummer4
PublikationsstatusVeröffentlicht - 2020
VeranstaltungInternational Gas Turbine Congress (IGTC) 2019 - Toranomon Hills Forum, Tokyo, Japan
Dauer: 17 Nov. 201922 Nov. 2019

Abstract

This paper presents an analysis of the vibration-induced effects on the aerofoil aerodynamics and boundary-layer development of a low-pressure-turbine blade. Large-eddy simulations of an MTUT161 low-pressure-turbine blade with imposed sinusoidal rigidbody oscillations were conducted for frequencies of 50 and 100 Hz as well as for a fixed reference blade. The oscillations are shown to impact both the time-averaged flow field and unsteady velocity fluctuations. These changes appear most markedly as a reduction in the stagnation-point pressure and a partial suppression of the separation bubble on the suction side of the aerofoil. The results suggest that the deterministic velocity fluctuations introduced by the oscillating blade promote transition on the suction side and expedite the generation of turbulence.

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Profile Aerodynamics of an Oscillating Low-Pressure–Turbine Blade. / Schwarzbach, Felix; Mimic, Dajan; Herbst, Florian.
in: International Journal of Gas Turbine, Propulsion and Power Systems, Jahrgang 11, Nr. 4, 2020, S. 68-75.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Schwarzbach, F, Mimic, D & Herbst, F 2020, 'Profile Aerodynamics of an Oscillating Low-Pressure–Turbine Blade', International Journal of Gas Turbine, Propulsion and Power Systems, Jg. 11, Nr. 4, S. 68-75. https://doi.org/10.38036/JGPP.11.4_68
Schwarzbach, F., Mimic, D., & Herbst, F. (2020). Profile Aerodynamics of an Oscillating Low-Pressure–Turbine Blade. International Journal of Gas Turbine, Propulsion and Power Systems, 11(4), 68-75. https://doi.org/10.38036/JGPP.11.4_68
Schwarzbach F, Mimic D, Herbst F. Profile Aerodynamics of an Oscillating Low-Pressure–Turbine Blade. International Journal of Gas Turbine, Propulsion and Power Systems. 2020;11(4):68-75. doi: 10.38036/JGPP.11.4_68
Schwarzbach, Felix ; Mimic, Dajan ; Herbst, Florian. / Profile Aerodynamics of an Oscillating Low-Pressure–Turbine Blade. in: International Journal of Gas Turbine, Propulsion and Power Systems. 2020 ; Jahrgang 11, Nr. 4. S. 68-75.
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