On the inboard stall delay due to rotation

• Autorzy: Dumitrescu, H. , Cardos, V.
• Języki publikacji: EN

Abstrakty

EN

This paper investigates the boundary-layer characteristics of a wind turbine blade of small chord length. The three-dimensional form of momentum integral equations is derived and used to predict the boundary-layer growth and limiting streamline angles on the blade surface for both attached and separating flow. The chordwise skin friction coefficient is used to identify boundary layer separation and shear layer reattachment locations. The nature of flow near the axis of rotation is discussed and the physical mechanism associated with 3-D and rotational effects is identified. A semi-empirical correction law for the lift coefficient based on 2-D airfoil data is established. Comparing calculated and measured lift curves of a stall controlled wind turbine, it is shown that the proposed correction law may improve significantly the accuracy of the predictions.

Słowa kluczowe

PL

płyn trzeciego stopnia; turbina wiatrowa; warstwa graniczna

EN

stall delay; three-dimensional boundary layer; wind turbines

• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2008
• Tom: Vol. 13, no 2
• Strony: 359-372
• Opis fizyczny: Bibliogr. 18 poz., tab., wykr.

Twórcy

autor

Dumitrescu, H.

autor

Cardos, V.

• Institute of Statistics and Applied Mathematics of the Romanian Academy P.O. Box 1-24, RO-70700, Bucharest, ROMANIA,

Bibliografia

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