Numerical Investigation of Different Blade Profiles Used in Wind Turbines

Year 2022, Volume: 63 Issue: 706, 1 - 22, 10.12.2021

Cevahir Tarhan , Mehmet Ali Çil

https://doi.org/10.46399/muhendismakina.1085153

Abstract

The amount of energy obtained from wind turbines is increasing day by day. One of the factors affecting the power output of wind turbines is blade profiles. In this study, simulations of different blade profiles (NACA 0009, NACA 2415, NACA 4415, NACA 4424, NACA 6412, NACA 6415, NACA 24112, FX 63-137, GOE 795, NREL’s S824, SD 5060, SG6040) using Qblade software created, numerically analyzed and their aerodynamic performances were examined. Numerical analyzes were performed at angle of attack between 0°and 20° and Reynolds numbers of 5x104, 2x105, 1x106. Blade profiles with the highest aerodynamic efficiency were determined as NACA 6412, NACA 6415 and NACA 4415, and the power outputs and performance values obtained by creating a three-bladed wind turbine from these blade profiles were found. Maximum efficiency was obtained for these blade profiles in the tip-speed ratio range of 6.5 to 7.8. As a result, the efficiency to be obtained from the turbine will be at the optimum level by using NACA 6412, NACA 6415 and NACA 4415 blade profiles in wind turbines. In this study, AG37, AH 80-140, NACA 8824 and RG-12 blade profiles, which are not available in the literature, were analyzed in order to contribute to the literature.

Keywords

Wind turbine, airfoil, lift coefficient, angle of attack, Qblade, Numerical Analysis, Computer Aided Design

Rüzgâr Türbinlerinde Kullanılan Farklı Kanat Profillerinin Sayısal Olarak İncelenmesi

Abstract

Rüzgâr türbinlerinden elde edilen enerji miktarı her geçen gün artmaktadır. Rüzgâr türbinlerinin güç çıkışlarını etkileyen faktörlerden birisi de kanat profilleridir. Bu çalışmada rüzgâr türbinlerinde kullanılan farklı (NACA 0009, NACA 2415, NACA 4415, NACA 4424, NACA 6412, NACA 6415, NACA 24112, FX 63-137, GOE 795, NREL’s S824, SD 5060, SG6040) kanat profillerinin Qblade yazılımı kullanılarak simülasyonları oluşturulup sayısal analizleri yapılmış ve aerodinamik performansları incelenmiştir. Sayısal analizler 0°- 20° arası hücum açılarında ve 5x104, 2x105 1x106 Reynolds sayılarında gerçekleştirilmiştir. En yüksek aerodinamik verimliliğe sahip kanat profilleri NACA 6412, NACA 6415 ve NACA 4415 olarak belirlenmiş ve bu kanat profillerinden üç kanatlı rüzgâr türbini oluşturulup elde edilen güç çıkışları ve performans değerleri bulunmuştur. Bu kanat profilleri için uç-hız oranı 6.5 ila 7.8 aralığında maksimum verim alınmıştır. Sonuç olarak rüzgâr türbinlerinde NACA 6412, NACA 6415 ve NACA 4415 kanat profilleri kullanılarak türbinden alınacak verim maksimum seviyede olacaktır. Bu çalışmada, literatürde mevcut olmayan AG37, AH 80-140 NACA 8824 ve RG-12 kanat profilleri literatüre katkı sağlamak amacıyla analiz edilmiştir.

Keywords

Rüzgâr türbini, kanat profili, taşıma katsayısı, hücum açısı, Qblade, Nümerik analiz, Bilgisayar destekli tasarım

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