A simulation investigation the performance of a small scale Elliptical Savonius wind turbine with twisting blades and sloping ends plates

Al-quraishi, Balasem Abdulameer Jabbar; Aboaltabooq, Mahdi Hatf Kadhum; AL-Fatlwe, Fatima Mohammed K.

doi:10.21533/pen.v10i1.2392

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6 depict C T increasing as the TSR falls. This graph trend appears to be consistent with previous studies [27], [10]. Both of the Savonius models with zigzag on the concave surface have a higher coefficient than the conventional Savonius.…”

Section: Figure 6 Coefficient Of Torquesupporting

confidence: 92%

“…In order to maximize the Savonius rotor's efficiency experts have suggested numerous modifications and refinements to the design. They had examined the effects of diverse design characteristics, such as modification of blade shape [3], [4], [5], [6], variation of overlap ratio [7], [8], [9], endplates [10], [11], aspect ratio [12], number of stage rotors [12], and number of blades [9]. The primary focus of these studies revolves around the examination of the impact of various parameters on its performance.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Sumiati,

Dinata,

Saputra

2024

TEM Journal

View full text Add to dashboard Cite

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.

show abstract

Section: Figure 6 Coefficient Of Torquesupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

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

Sumiati,

Dinata,

Saputra

2024

TEM Journal

View full text Add to dashboard Cite

show abstract

Enhancing Savonius Rotor Performance with Zigzag in Concave Surface-CFD Investigation

Sumiati,

Dinata,

Saputra

et al. 2024

CFD Lett.

View full text Add to dashboard Cite

Savonius, a type of vertical-axis wind turbine (VAWT), is suitable as an appropriate small-scale energy conversion apparatus for regions with relatively low wind speeds, such as Indonesia; however, it exhibits sub-optimal efficiency. One potential approach to improving the efficiency of Savonius turbines is to increase the drag force on the concave surface of the blades. In this case, the dissimilarity in the forces experienced by the two blades can be increased, resulting in a corresponding increase in torque. This investigation aims to assess and compare the power coefficient (Cp), torque and drag coefficient (Cd) of the conventional Savonius rotor with the zigzag pattern implemented in the middle area of the concave surface of the blades at low wind speeds. The efficiency can be achieved by implementing the k-ω shear stress transfer (SST) turbulent model and 3D computational fluid dynamics simulation at tip speed ratio (λ) 0.4-1 with a velocity inlet of 4, 5, and 6 m/s. The study results show that using the zigzag pattern on the concave surface led to an 18.8% boosted in Cp of at λ = 0.8 and an inlet velocity (U) = 5 m/s compared to the standard Savonius rotor model. In this case, the efficiency of the Savonius wind turbine may be enhanced by incorporating a zigzag pattern in the middle of the concave surface of the Savonius rotor.

show abstract

A simulation investigation the performance of a small scale Elliptical Savonius wind turbine with twisting blades and sloping ends plates

Cited by 2 publications

References 0 publications

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

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

Enhancing Savonius Rotor Performance with Zigzag in Concave Surface-CFD Investigation

Contact Info

Product

Resources

About