Prediction of unsteady VAWT aerodynamics by lifting line theory

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

Abstrakty

EN

Based on the lifting line theory and a free vortex wake model, a method including dynamic stall effects is presented for predicting the performance of a three-dimensional vertical-axis wind turbine. A vortex model is used in which the wake is composed of trailing streamwise and shedding spanwise vortices, whose strengths are equal to the change in the bound vortex strength as dictated by Helmholtz and Kelvin's theorems. Performance parameters are calculated by applying the Biot-Savart law along with the Kutta-Joukowski theorem and a semi-empirical dynamic stall model. Predictions are shown to compare favorably with the existing experimental data. The method can predict local and global performances more accurately than the previous momentum models.

Słowa kluczowe

EN

aerodynamics; wind turbines; vortex methods; unsteady flow; dynamic stall

PL

aerodynamika; turbina wiatrowa; metoda wirowa; przepływ niestabilny

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2004
• Tom: Vol. 9, no 4
• Strony: 675--686
• Opis fizyczny: Bibliogr. 11 poz., rys., wykr.

Twórcy

autor

Dumitrescu H.

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

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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