Stator blade modification as a method of leakage flow trearment to improve flow efficiency of old-design steam turbine stages

• Autorzy: Lampart P. , Gardzilewicz A. , Szymaniak M. , Kurant B. , Banaszkiewicz M. , Malec A.
• Języki publikacji: EN

Abstrakty

EN

The paper discusses the possibilities of decreasing tip leakage losses in old-design turbines. Two methods of modification - stator blade leading edge cut and unceambered stator blade profile, where the blades of the downstream stator are modified near the tip to better fit to tip leakage flow from the preceding rotor - are presented here and investigated with the help of a CFD code. Changes in flow patterns are described. Also, possible efficiency gains from the applied modifications are estimated in the paper.

Słowa kluczowe

EN

turbine stage; tip leakage loss; CFD

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN
• Czasopismo: Transactions of the Institute of Fluid-Flow Machinery
• Rocznik: 2003
• Tom: nr 114
• Strony: 19--36
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Lampart P.

• Institute of Fluid Flow Machinery of the Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland

autor

Gardzilewicz A.

• Institute of Fluid Flow Machinery of the Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland

autor

Szymaniak M.

• Institute of Fluid Flow Machinery of the Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland

autor

Kurant B.

• Institute of Fluid Flow Machinery of the Polish Academy of Sciences, Fiszera 14, 80-231 Gdańsk, Poland

autor

Banaszkiewicz M.

• ALSTOM Power, Sp. z.o.o, Stoczniowa 2, 82-300 Elbląg

autor

Malec A.

• ALSTOM Power, Sp. z.o.o, Stoczniowa 2, 82-300 Elbląg

Bibliografia

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