Numerical Investigation of Modified Savonius Wind Turbine With Various Straight Blade Angle

Anwar, Khairil; Himran, Syukri; Sule, Luther; Azis, Nasruddin

doi:10.26480/jmerd.03.2018.38.42

Cited by 5 publications

(2 citation statements)

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“…The creator of this turbine researched more than 40 different types of turbines [41], and these ideas are being developed to modern times [42][43][44]. Figure 8 shows Savonius' concepts [41] and contemporary solutions [45][46][47][48].…”

Section: Vertical Axis Wind Turbinesmentioning

confidence: 99%

Experimental Assessment of Suitability of Darrieus and Savonius Turbines for Obtaining Wind Energy from Passing Vehicles

Łyskawiński,

Kowalski,

Wojciechowski

2024

Energies

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The article deals with the results of a comparative analysis carried out on the construction of wind turbines applied in energy generation systems using the wind of passing vehicles. The structures of turbines with horizontal and vertical axes of rotation were considered. Vertical axis wind turbines (VAWTs) have been observed to operate in various wind directions, including highly turbulent winds. Therefore, for further experimental research, VAWTs have been selected, i.e., Darrieus and Savonius turbines and their modifications. For the purpose of experimental research, the authors developed and implemented their own laboratory setup. This setup enabled the measurement of quantities such as torque, power, and power coefficient and allowed for the determination of the start-up parameters of the investigated turbines. Moreover, as part of the research, wind speed was also measured in field conditions at a distance of 1 m from the expressway. The wind speed obtained from passing vehicles did not exceed 9 m/s. For this reason, the tests of the considered turbines using the experimental setup were performed for wind speeds in the range of 5.8–8.6 m/s. The investigations were conducted based on the obtained results, and it was concluded that the helical Savonius turbine possessed the highest efficiency (0.2047 from a wind speed of 5.8 m/s) in generating energy from the wind produced by vehicles traveling on roads.

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Section: Vertical Axis Wind Turbinesmentioning

confidence: 99%

Experimental Assessment of Suitability of Darrieus and Savonius Turbines for Obtaining Wind Energy from Passing Vehicles

Łyskawiński,

Kowalski,

Wojciechowski

2024

Energies

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“…8 shows that of the four models analyzed numerically, the average drag coefficient value shows that the application of zigzag on the concave surface has a better average drag coefficient value than the semicircular one. The research by Khairil Anwar [28] on Savonius rotors said that adding a variable straight blade angle to the Savonius configuration raises the drag coefficient, which makes the Savonius turbine more efficient. Consequently, the heightened drag force significantly impacts the overall efficiency of the Savonius rotor.…”

Section: Figure 8 Comparison C D Max C D Avrg and C D Minmentioning

confidence: 99%

Enhancing Savonius Rotor Performance With Zigzag Surface Investigated at Drag Force, Pressure, and Flow Visualization Analysis

Sumiati,

Dinata,

Saputra

2024

TEM Journal

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Savonius, a type of vertical-axis wind turbine, is a small-scale energy conversion device suitable for low wind speeds, such as those characteristic of Indonesian wind speeds, yet has low efficiency. Savonius is a drag-type turbine. Drag force on the surface is affected by roughness or wavyness. The purpose of this study is to analyze the impact of applying wavy (zigzag) variations to the concave surface of Savonius blades on their performance. This was achieved by the use of 3D computational fluid dynamics simulation at TSR 0.6 with a velocity inlet of 5 m/s. The model was semicircular, zigzag on the concave surface on semicircular with t = 0.75, t = 0.25, and t = 1 mm. The result of this study's CD maximum is 1,817 at the zigzag model with t = 1 and CD avrg =1.24. The average drag coefficient increased by 14 percent compared to the conventional semicircular rotor. The maximum Cp value is also found at t = 1 mm, which is 0.315. The power coefficient increased by 29 percent compared to the conventional semicircular rotor. The total pressure on the blade shows the highest model with t = 1 mm at the same angle of attack (α = 30). Zigzag on the concave surface affects blade pressure, which improves the performance of the Savonius rotor.

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Numerical Analysis of Modified Savonius Wind Turbine Blade with Overlap Ratio Variations

Pangestu,

Arini,

Satrio

2023

2023 International Electronics Symposium (IES)

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Numerical Investigation of Modified Savonius Wind Turbine With Various Straight Blade Angle

Cited by 5 publications

References 0 publications

Experimental Assessment of Suitability of Darrieus and Savonius Turbines for Obtaining Wind Energy from Passing Vehicles

Experimental Assessment of Suitability of Darrieus and Savonius Turbines for Obtaining Wind Energy from Passing Vehicles

Enhancing Savonius Rotor Performance With Zigzag Surface Investigated at Drag Force, Pressure, and Flow Visualization Analysis

Numerical Analysis of Modified Savonius Wind Turbine Blade with Overlap Ratio Variations

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