ALİ VARDAR, NAZMİ İZLİ, FERHAT KURTULMUŞ

Aerodynamic performance of some wind turbine rotor models

Bu çalışmada, NACA profilleri kullanılarak imal edilen minyatür rüzgar türbin rotorlarının güç katsayıları saptanmıştır. Bu amaçla rüzgar türbin rotor modeli testleri için açık bir sistem kurulmuştur. Bu test sisteminde her bir rotor formu üzerine gelen rüzgarın içinde barındırdığı güç değerleri ve her bir rotor formunun uç hız oranları ortaya konulmuştur. Bu veriler yardımıyla da her bir rotor formunun güç katsayıları hesaplanmıştır. Çalışmada elde edilen güç katsayısı değerlerinin 0,316 ile 0,416 arasında değiştiği görülmüştür. NACA 4415 ve NACA 5317 profilleri kullanılarak imal edilen, 0 derece burulma açısına sahip, yaklaşık 10 derece bağlama açısına sahip, 4 kanatlı rotorların en yüksek ideal güç katsayısı değerlerine sahip olduğu belirlenmiştir.

Anahtar Kelimeler:

aerodinamik özellikler, rotor, aerodinamik

Bazı rüzgâr türbin rotor modellerinin aerodinamik performansları

In this study, power coefficients of miniature wind turbine rotors produced by using NACA profiles were determined. To this end, an open system for wind turbine rotor model was established. In this test system power values of the wind that reach to each of the rotor form and tip speed ratios of each rotor form were indicated. With the help of these data, power coefficients of each rotor form were calculated. It was found that power coefficient values that were obtained in the study changed between 0,316 and 0,416. It was determined that 4-bladed rotors that were produced by using NACA 4415 and NACA 5317 profiles, having 0 degree twisting angle and approximately 10 degrees binding angle, had the highest ideal power coefficient values.

Keywords:

aerodynamic properties, rotors, aerodynamics,

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