Performance evaluation of a novel vertical axis wind turbine using twisted blades in multi-stage Savonius rotors

Saad, Ahmed S.; Elwardany, Ahmed; El-Sharkawy, Ibrahim I.; Ahmed, Mahmoud

doi:10.1016/j.enconman.2021.114013

Cited by 41 publications

(12 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Penelitian serupa dilakukan oleh Saad et. al [16] dan menemukan bahwa setiap penambahan stage turbin akan meningkatkan nilai Cp. Secara numerik oleh Kumar et.…”

Section: Pendahuluanunclassified

Studi performa aerodinamis turbin hidrokinetik Savonius dengan 2 semicircular blade-sharp leading edge

2022

View full text Add to dashboard Cite

This current investigation was conducted to study the aerodynamic characteristics of Savonius hydrokinetics turbine with semicircular blade-sharp leading edge. The influences of blade thickness and freestream velocity were simulated using ANSYS FLUENT with k-w SST model. The results show that the flow structure changes with increasing turbine rotation in which the flow complexity is formed at a larger rotation angle. The coefficient of torque and power for thin blades is higher than for thicker turbine blades and its values increase with the increase in the freestream velocity.

show abstract

“…Penelitian serupa dilakukan oleh Saad et. al [16] dan menemukan bahwa setiap penambahan stage turbin akan meningkatkan nilai Cp. Secara numerik oleh Kumar et.…”

Section: Pendahuluanunclassified

Studi performa aerodinamis turbin hidrokinetik Savonius dengan 2 semicircular blade-sharp leading edge

2022

View full text Add to dashboard Cite

show abstract

“…Their results have shown that the number of blades significantly increased the performance of the SWT [16]. Saad et al [17] evaluated the performance of the rotor of the SWT where the effect of a multi-stage was assessed. Their results revealed the multi-stage SWT self-starting capability and enhance torque oscillation [17].…”

Section: Introductionmentioning

confidence: 99%

“…Saad et al [17] evaluated the performance of the rotor of the SWT where the effect of a multi-stage was assessed. Their results revealed the multi-stage SWT self-starting capability and enhance torque oscillation [17]. Meanwhile, the single-stage SWT generates a higher dynamic moment.…”

Section: Introductionmentioning

confidence: 99%

Savonius Wind Turbine Numerical Parametric Analysis Using Space-Filling Design and Gaussian Stochastic Process

Ubando

San

Cruz

2022

Wind

View full text Add to dashboard Cite

Wind energy is an alternative source of clean energy to address the growing energy demand and provide pollution-free electricity. With the rapid development of urban areas, high wind energy resources such as high-rise building rooftops are excellent locations for urban wind turbine installation. One of the practical and simple urban wind turbines is the Savonius design. It has a simple design, easy to maintain, and is very affordable. This work focuses on the design evaluation of a Savonius wind turbine (SWT) by varying the rotor diameter, rotor height, and twist angle for urban applications. A transient computational fluid dynamics (CFD) approach is applied to assess the various design treatments using a space-filling design of experiments. To address the spaces in the hypercube statistical design, a sphere packing design method was adopted which suited the evaluation of computational simulations results such as that of the CFD. The Gaussian stochastic process model was applied to establish the trend of the parametric performance of the optimized SWT design through the model fitting. The results have shown that optimized SWT performs well with its self-starting capability compared to the traditional Savonius design. In addition, the optimized SWT has shown a better peak power coefficient compared with the results of previous works on the design of SWT.

show abstract

“…This kind of integrated wind turbo not only possesses one higher utilization rate of wind energy but also a good starting performance, which has achieved considering both start‐up and efficiency. In literature 11 developed a new type of vertical axis wind turbine with twisted blades based on Savonius blades. This new type of wind turbine has a great self‐starting ability, making it widely suitable for intermittent wind and extremely low wind speed areas.…”

Section: Introductionmentioning

confidence: 99%

Aerodynamic performance analysis and power generation characteristics experiment of vertical axis wind turbine

Liu

Cao

et al. 2022

Engineering Reports

View full text Add to dashboard Cite

With the wide application of clean energy, the requirements of this vertical axis wind turbine are higher and higher. A new diagonal spiral blade vertical axis wind turbine is designed and studied. The shape of the new type of wind turbine blade is designed based on the diagonal spiral structure that is common in life, considering the situation of different pitch angles and constructing 11 kinds of prototype machine. In‐depth analysis of the aerodynamic performance of these new wind turbines through simulation calculations shows that the prototype with a pitch angle of 110° has the best aerodynamic performance. When the tip speed ratio is 0.4, the maximum wind energy utilization rate can reach 0.29. Besides, the model of this wind turbine is constructed by 3D printing, which is tested, and the performance of the models is compared with that of the traditional S‐type wind turbine in a real environment. There rationality and superiority of the design of the new diagonal spiral blade vertical axis wind turbine are proved, and this apply background of this new diagonal spiral blade wind turbine is demonstrated by comparison. This article also analyzes the wake of the wind turbine and makes reasonable planning of the arrangement spacing that the wake effect has the least effect on the downstream wind turbine, which can increase the power generation efficiency of the group arrangement of turbines.

show abstract

Performance evaluation of a novel vertical axis wind turbine using twisted blades in multi-stage Savonius rotors

Cited by 41 publications

References 43 publications

Studi performa aerodinamis turbin hidrokinetik Savonius dengan 2 semicircular blade-sharp leading edge

Studi performa aerodinamis turbin hidrokinetik Savonius dengan 2 semicircular blade-sharp leading edge

Savonius Wind Turbine Numerical Parametric Analysis Using Space-Filling Design and Gaussian Stochastic Process

Aerodynamic performance analysis and power generation characteristics experiment of vertical axis wind turbine

Contact Info

Product

Resources

About