التفاصيل البيبلوغرافية
| العنوان: |
Experimental and Numerical Study of Installed Circular and I-65° Type Cylinders Toward Returning-Blade Savonius Turbine for Augmented Aerodynamic Performance. |
| المؤلفون: |
Sakti, Gunawan, Yuwono, Triyogi, Widodo, Wawan Aries |
| المصدر: |
International Review of Mechanical Engineering; Mar2023, Vol. 17 Issue 3, p120-131, 12p |
| مصطلحات موضوعية: |
TURBINE blades, TURBINES, DRAG (Aerodynamics), AERODYNAMIC load, DRAG force, VERTICAL axis wind turbines, AEROFOILS |
| مستخلص: |
In this essential investigation, the center point returning turbine blade of a Savonius has been positioned in a staggered alignment with a cylinder type I-65°. The conventional circular cylinder has been cut at an angle of 65° on both sides. This kind of cylinder, known as a cylinder, I-65° type, is made to reduce the aerodynamic drag force on the returning blade. The investigation has been performed under two scenarios, conventional and tandem turbine with installing a Cylinder I-65°. The staggered angle has been set within -20°=a=90° relative to the center point of the returning turbine blade. Experimental and numerical approaches based on those scenarios have examined the wind turbine performance. Based on a wind speed (U8) of 5 m/s, the study has used a width L=2D-b, where D refers to the turbine blade outside diameter, and b is the turbine egap. The 0.5D-diameter cylinder I-65° type is positioned 1.4D upstream of the returning turbine blade. In the CFD study, a 2D numerical computation has been iterated by using ANSYS Fluent® 19.1 in order to investigate the Savonius turbine flow. The experiment results indicate that positioning Cylinder I-65° upstream of the returning blade can raise the Savonius turbine power. Furthermore, adding a Cylinder I-65° has enhanced the maximum Cp of the Savonius turbines by about 12%. The peak CP is obtained at a tips-speed ratio ?=0.8 and staggered angle a=0°. Numerical analysis has been carried out to analyze the airflow phenomenon around the turbine more deeply, and the results have showed good agreement to reveal and strengthen experimental quantitative data. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
