Deviation and profile losses in a turbine cascade at off-design incidences

• Autorzy: Willinger R. , Haselbacher H.
• 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 details of an investigation of the two-dimensional flow field in a linear turbine cascade at off-design incidences. The cascade geometry corresponds to the tip section of a moving blade row of a gas turbine of recent design. Six different inlet flow angles, ranging from high positive incidence to high negative incidence, have been investigated experimentally. A three hole pressure probe was traversed immediately downstream of the trailing edge plane. Further work concerned the computation of the cascade flow field with a finite-element based Navier-Stokes solver. The k/ɛ-model was used to account for the turbulent behavior of the flow. The measurement and computational results are compared with an established profile incidence loss correlation.

Słowa kluczowe

EN

flow field; investigation; inlet; pressure; Navier-Stokes solver

PL

pole przepływu; badanie; wlot; ciśnienie; elementy skończone

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
• Rocznik: 1999
• Tom: nr 115
• Strony: 431--443
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Willinger R.

• Institute of Thermal Turbomachines and Powerplants Vienna University of Technology Austria

autor

Haselbacher H.

• Institute of Thermal Turbomachines and Powerplants Vienna University of Technology Austria