Wpływ wygięcia łopatek kierowniczych na sprawność dwustopniowej turbiny

• Autorzy: Smolny A. , Błaszczak J. , Borzęcki T.

Warianty tytułu

EN

Influence of Bowed Stator Vanes on the Two-Stage Turbine Efficiency

• Języki publikacji: PL

Abstrakty

PL

W artykule opisano badania eksperymentalne I numeryczne wpływu wygięcia łopatek na struktury przepływu oraz na ogólną sprawność maszyny. Niski współczynnik kształtu kreuje skomplikowany przepływ trójwymiarowy zdominowany przez przepływy wtórne. Celem pracy było zredukowanie tego wpływu poprzez zmianę wygięcia łopatek pierwszej kierownicy. Zmodyfikowane łopatki kierownic zmniejszyły te wpływy. Jest to powiązane ze śladami z pierwszej kierownicy i strukturami wirowymi, które wytwarzają obszary o niskiej wartości pędu.

EN

In this paper some experimental and numerical investigations of bowed vanes influence on flow structures and the overall efficiency of the machine are described. A low shape coefficient involves a complicated three-dimensional flow dominated by secondary flows. The main goal of this work was to reduce an influence of these structures by bowing the first stator vanes. The modified vanes lowered these influences. This is due to the first stator wakes and the vortex structures, which produce low momentum flow zones.

Słowa kluczowe

PL

maszyny przepływowe; łopatki kierownicze; wygięcie; turbina

EN

turbomachinery; stator vanes; bowing; turbine

• Wydawca: Wydawnictwo Politechniki Łódzkiej
• Czasopismo: Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka
• Rocznik: 2007
• Tom: nr 131
• Strony: 89--98
• Opis fizyczny: Bibliogr. 32 poz.

Twórcy

autor

Smolny A.

autor

Błaszczak J.

autor

Borzęcki T.

• Politechnika Łódzka Instytut Maszyn Przepływowych,

Bibliografia

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