CFD Study of Unsteady Flow Through Savonius Wind Turbine Clusters

Meziane, Mohamed; Essadiqi, E.; Faqir, Mustapha; Ghanameh, Mohamad Fathi

doi:10.20508/ijrer.v9i2.8973.g7635

Cited by 3 publications

(3 citation statements)

References 27 publications

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“…Another study by A. Zakaria et al, 8 looked into how the 180 • twist helical Savonius rotor performed depending on the time step and time increment. Numerous numerical investigations of the effectiveness of VAWTs have contributed to the domain's expertise [9][10][11][12][13][14][15] .…”

Section: Background and Literature Reviewmentioning

confidence: 99%

Numerical Investigation on Aerodynamic Performance of Helical Savonius Rotor Inspired by Natural Shapes

Bagade,

Chaudhari

et al. 2023

jmmf

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There have been extensive studies conducted on Horizontal Axis Wind Turbines (HAWT) at relatively moderate to high wind speed regions. However, such detailed investigations for Vertical Axis Wind Turbines (VAWT), specifically for low wind speed terrains are amply reported. This motivates us to conduct research to explore possibilities in improving performance of VAWT in low wind speed terrains, which is attempted in the present work. This is required due to the fact that most of regions do not have sufficient extractable wind energy due to low speeds. VAWTs can perform at such low wind speed, but are less efficient. Improving efficiency of VAWT will solve the purpose. Hence, the present study is aimed at finding the performance characteristics of VAWT for low Wind speed configurations. Various parameters affecting power generation are investigated. Numerical analyses on various configurations are conducted to study the effects of twist angle, free stream velocity, number of blades. Computational results obtained have been in good agreement with the established results for semi-circular Savonius rotor profile. The results suggest that for low wind speed terrains, there is a need to explore the combination of lift and drag type of profiles, which could be used for the utilization of available wind power. Hence, naturally inspired shapes (profiles) were investigated for the possible solution of combined lift and drag type wind turbines at low speeds. The blade shape for such combined lift and drag type wind turbine were deduced from the available literature. It is well established that the naturally inspired shapes as noted in sea conch follow golden ratio in its contours. The present study provides an insight on the characteristic curves of VAWT for low wind speed terrains, effects of various geometric and flow parameters suitable for low wind speed terrains.

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Section: Background and Literature Reviewmentioning

confidence: 99%

Numerical Investigation on Aerodynamic Performance of Helical Savonius Rotor Inspired by Natural Shapes

Bagade,

Chaudhari

et al. 2023

jmmf

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“…In addition, the smooth surface on the surface of the cylinder will produce less turbulence so that there is less drag [17,18]. Large Savonius turbines will find it difficult to start rotation at low wind velocities [19]. Savonius hybrids with turbine lines are an option to reduce the weakness of Savonius turbines [17,[19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…Large Savonius turbines will find it difficult to start rotation at low wind velocities [19]. Savonius hybrids with turbine lines are an option to reduce the weakness of Savonius turbines [17,[19][20][21]. Therefore, it is combined with the Magnus rotor as self-starting support.…”

Section: Introductionmentioning

confidence: 99%

Savonius-Magnus Hybrid Turbine Design Performance Based on Computational Fluid Dynamics

Rr. Heni Hendaryati,

Achmad Fauzan Hery Soegiharto,

Dolly Salwansyah

et al. 2024

CFDL

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Savonius turbine is a vertical-axis wind turbine (VAWT), which has the advantage of being able to capture wind from different directions. This turbine is suitable for high turbulent wind areas. The blade on the Savonius turbine used in this study is equipped with a Magnus rotor with dimensions of 120 mm in diameter and 720 mm in height. The main purpose of this study is to determine the torque and pressure generated by turbines with three and four blades. The design was then tested numerically with variations in wind velocity. The simulation model was created using computer-aided design software, namely Autodesk Inventor 2023, and then inputted into computational fluid dynamics (CFD) software, namely Ansys Workbench 2022 R2. Wind velocities were varied by 3, 5, 7, 9, and 11 m/s and simulated using transient time with constant wind velocity. The result of this study is that the largest pressure is generated by a hybrid turbine with four blades at a wind velocity of 11 m/s. The results show that the torque and wind pressure that occurs in three- and four-blade hybrid turbines tend to rise; the faster the wind, the higher the torque and pressure of both hybrid turbines

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Enhancing hydrodynamic efficiency of Savonius hydrokinetic turbine through circular deflector flow augmentation

Singh,

Saini,

2024

Energy Sources, Part A: Recovery, Utilization, and Environmenta

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CFD Study of Unsteady Flow Through Savonius Wind Turbine Clusters

Cited by 3 publications

References 27 publications

Numerical Investigation on Aerodynamic Performance of Helical Savonius Rotor Inspired by Natural Shapes

Numerical Investigation on Aerodynamic Performance of Helical Savonius Rotor Inspired by Natural Shapes

Savonius-Magnus Hybrid Turbine Design Performance Based on Computational Fluid Dynamics

Enhancing hydrodynamic efficiency of Savonius hydrokinetic turbine through circular deflector flow augmentation

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