Shock-induced dynamics of an elastically turbine cascade at transonic flow

• Autorzy: Urban B. , Stetter H. , Vortmeyer N.
• Konferencja: International Conference SYMKOM '99. Compressor & Turbine Stage Flow Path Theory, Experiment & User Verification (1999 ; Łódź, Polska)
• Języki publikacji: EN

Abstrakty

EN

This paper presents experimental investigations on shock-induced flutter in a linear transonic turbine cascade. To examine these phenomena, an elastic suspension system has been developed so that only aerodynamic coupling occurs. The profiles are typical for the tip section of a transonic low pressure steam turbine last stage. The examination at the two-dimensional test rig with superheated steam as working fluid mainly deals with the oscillatory behaviour of the blades with respect to a variation of the isentropic outlet Mach number. In addition, the complex shockboundary layer interactions on the blades' suction sides are described.

Słowa kluczowe

EN

flutter; Mach number; transonic; low pressure; steam turbine

PL

liczba Macha; niskie ciśnienie; turbina parowa

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
• Rocznik: 1999
• Tom: nr 115
• Strony: 387--396
• Opis fizyczny: Bibliogr. 8 poz.

Twórcy

autor

Urban B.

• Institute of Thermal Turbomachinery and Machinery Laboratory, University of Stuttgart, Germany

autor

Stetter H.

• Institute of Thermal Turbomachinery and Machinery Laboratory, University of Stuttgart, Germany

autor

Vortmeyer N.

• Siemens AG, Power Generation, Germany