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Artículos de revistas sobre el tema "Savonius rotor"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 24 de julio de 2025

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1

Sahim, Kaprawi, Kadafi Ihtisan, Dyos Santoso, and Riman Sipahutar. "Experimental Study of Darrieus-Savonius Water Turbine with Deflector: Effect of Deflector on the Performance." International Journal of Rotating Machinery 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/203108.

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The reverse force on the returning blade of a water turbine can be reduced by setting a deflector on the returning blade side of a rotor. The deflector configuration can also concentrate the flow which passes through the rotor so that the torque and the power of turbine can be considerably increased. The placing of Savonius in Darrieus rotor is carried out by setting the Savonius bucket in Darrieus rotor at the same axis. The combination of these rotors is also called a Darrieus-Savonius turbine. This rotor can improve torque of turbine. Experiments are conducted in an irrigation canal to find

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2

Song, Lei, Ji Wang, Shibo Wang, Zongxiao Yang, and Jianxin Su. "Numerical study on performance of a vertical axis wind rotor with S-shaped blades." PLOS One 20, no. 5 (2025): e0322953. https://doi.org/10.1371/journal.pone.0322953.

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Traditional Savonius wind rotor has simple structure and can operate in any wind direction. However, its aerodynamic efficiency is lower than other types. A novel S-shaped wind rotor with three blades is proposed in order to improve the aerodynamic performance. The blade of the rotor is composed of two opposing convex circular arcs and its shape likes an ‘S’. The flow characteristics of the rotor are studied and analyzed by computational fluid dynamics (CFD) numerical simulation method. The steady and transient performances are studied using SST k-ω model and sliding mesh method, and are compa

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3

Cheng, Chao Yuan, and Xiao Qing Wei. "The Innovative Design and Simulation Analysis of Small Savonius Wind Turbine." Advanced Materials Research 591-593 (November 2012): 832–36. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.832.

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Savonius rotor is a typical style of vertical-axis wind turbine (VAWT). A new innovative design of two Savonius rotors coaxially in the opposite direction is presented in the paper which is different from the traditional design. The traditional generator has only a pair of stator and rotor and matched with trational Savonius rotor. Enlarging the relative speed between the magnetic pole and the coil pole by making the two pole rotate in the opposite direction in the innovative Savonius wind turbine. In this way, it can enhance the power generation efficiency of the Savonius wind turbine. The fl

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4

Moreno, Martin, Iván Trejo-Zúñiga, Jesús Terrazas, Arturo Díaz-Ponce, and Andrés Pérez-Terrazo. "Hybridization of a Micro-Scale Savonius Rotor Using a Helical Darrieus Rotor." Fluids 10, no. 3 (2025): 63. https://doi.org/10.3390/fluids10030063.

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This study presents a micro-scale hybrid wind turbine that integrates a Savonius rotor with a Helical Darrieus rotor, aiming to enhance energy conversion efficiency and adaptability for decentralized renewable energy generation. The hybrid design leverages the high torque generation of the Savonius rotor and the aerodynamic efficiency of the Helical Darrieus rotor. Computational analyses using CFD simulations and experimental validation with a 3D-printed prototype in a closed wind tunnel were conducted at speeds ranging from 3 to 8 m/s. The results demonstrate that the hybrid turbine achieves

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5

Redchyts, Dmytro, Koldo Portal-Porras, Serhii Tarasov, et al. "Aerodynamic Performance of Vertical-Axis Wind Turbines." Journal of Marine Science and Engineering 11, no. 7 (2023): 1367. http://dx.doi.org/10.3390/jmse11071367.

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The nonstationary separated incompressible flows around Darrieus and Savonius rotors of vertical-axis wind turbines were investigated through computational simulation using the Reynolds averaged Navier–Stokes equations and Spalart–Allmaras turbulence model. The implicit finite-volume algorithm, the basis of which was artificial compressibility method, was chosen to obtain the numerical solution. The series of computational and physical experiments for Darrieus rotors with varied numbers and shapes of blades were performed. The detailed visualization of the flow was presented. The turbulent flo

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6

Freitas, Felipe Augusto Lustosa Meireles, Ronaldo Barcelos e. Silva, Leonardo Da Rosa Schmidt, Silvana Maldaner, and Lucinéia Fabris. "Análise da potência mecânica de rotores de Savonius de mesma razão de aspecto." Ciência e Natura 42 (February 7, 2020): 33. http://dx.doi.org/10.5902/2179460x40635.

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An experimental performance study of Savonius small rotors is performed in this work. Two Savonius prototypes, two blades and the same aspect ratio, were constructed from vinyl polychloride and use different air flow. Experimental tests allowed the rotation speed of each rotor to be determined for different air flows. It is important to note that the average angular velocity of the smaller rotor is approximately fifty percent higher than the larger rotor. At the same time, the absorption torque on the rotor shaft was measured and the mechanical power of each Savonius wind turbine prototype was

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7

Sampelawang, Petrus, Nasaruddin Salam, Luther Sule, and Rustan Tarakka. "Enhancing savonius rotor model with additional grooves on hydrokinetic turbine performance." Eastern-European Journal of Enterprise Technologies 1, no. 8 (127) (2024): 28–37. http://dx.doi.org/10.15587/1729-4061.2024.298915.

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Hydrokinetic turbines use different rotors for technological and economic reasons. Even though it performs poorly, vertical-axis hydrokinetic turbines use the Savonius rotor. The object of research is a Savonius rotor model with additional grooves. The study addresses the need to improve the efficiency and overall performance of Savonius rotor models in hydrokinetic turbines, which are widely used for harnessing energy from flowing water currents. The problem involves understanding how different groove configurations affect the aerodynamic behavior and energy extraction efficiency of the Savon

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8

Doerffer, Krzysztof, Janusz Telega, Piotr Doerffer, Paulina Hercel, and Andrzej Tomporowski. "Dependence of Power Characteristics on Savonius Rotor Segmentation." Energies 14, no. 10 (2021): 2912. http://dx.doi.org/10.3390/en14102912.

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Savonius rotors are large and heavy because they use drag force for propulsion. This leads to a larger investment in comparison to horizontal axis wind turbine (HAWT) rotors using lift forces. A simple construction of the Savonius rotor is preferred to reduce the production effort. Therefore, it is proposed here to use single-segment rotors of high elongation. Nevertheless, this rotor type must be compared with a multi-segment rotor to prove that the simplification does not deteriorate the effectiveness. The number of segments affects the aerodynamic performance of the rotor, however, the resu

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9

Prabowoputra, Dandun Mahesa, Maria Krisnawati, Akhlis Rahman Sari Nurhidayat, Carolus Borromeus Krishna Sampurno, and Syamsul Hadi. "CFD-OPTIMIZED SAVONIUS WIND TURBINE PERFORMANCE DESIGN FOR PSA ANALYSIS." ASEAN Engineering Journal 15, no. 1 (2025): 147–52. https://doi.org/10.11113/aej.v15.21368.

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The primary aim of this research is to enhance the accessibility of clean energy by advancing technology in energy conversion. Specifically, the focus is on optimizing the design of wind turbines equipped with Savonius rotors to maximize the generation of renewable energy. The Savonius rotor is a cross-flow rotor characterized by its uncomplicated design and ease of implementation. The performance of Savonius is significantly influenced by geometric considerations. The performance enhancement of the Savonius multi-stage is contingent upon the phase-shift angle (PSA). The present study employed

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10

Song, Xiao Wen, Kai Yuan Cao, Zhong Rui Chen, and Ke Shen. "Design Optimization of Savonius Rotors: An Overview." Applied Mechanics and Materials 58-60 (June 2011): 827–33. http://dx.doi.org/10.4028/www.scientific.net/amm.58-60.827.

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Since the Savonius rotor has a low starting torque and is adaptable for wind in various directions, it has received great attention in the past decades. In this paper, we present an overview of the state of the art in Savonius rotor design, according to three general strategies of design optimization: 1) Optimizing Savonius rotor structural parameters including overlap ratio, aspect ratio of the rotor, twist angle, Reynolds number, and the shaft of the rotor; 2)Adopting multi-level Savonius rotor or combining Savonius rotor with other type rotor to avoid negative torque of the rotor and improv

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11

Saini, Gaurav, and Ashoke De. "ON THE SELF-STARTING COMPARATIVE PERFORMANCE EVALUATION OF DARRIEUS AND HYBRID HYDROKINETIC ROTOR." International Journal of Energy for a Clean Environment 24, no. 5 (2023): 67–91. http://dx.doi.org/10.1615/interjenercleanenv.v24.i5.50.

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Darrieus rotor is a promising technology for hydrokinetic and wind energy harvesting applications. However, the Darrieus rotor suffers from the problem of poor starting performance. The present research highlights solutions to improve the poor starting performance of the Darrieus rotor by introducing the hybrid rotor. Further, a comparative performance evaluation of conventional vertical axis Darrieus and hybrid rotors has been investigated numerically. The most widely used S-series S-1046 hydrofoil has been utilized by hybrid and Darrieus rotors. Further, two semicircular blades are used for

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12

Etemadeasl, Vahid, Rasool Esmaelnajad, Farzad F. Dizaji, and Babak Farzaneh. "A novel configuration for improving the aerodynamic performance of Savonius rotors." Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 233, no. 6 (2018): 751–61. http://dx.doi.org/10.1177/0957650918818968.

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In this paper, a new configuration is proposed for Savonius rotors by installing two Counter-Rotating Savonius Rotors together and adding a V-shaped shield. For evaluating the performance of this type of turbine, turbulent unsteady flow around the rotor is simulated using ANSYS-Fluent 16.0 software. Numerical results of the torque and power coefficients of the turbine show a significant improvement in the aerodynamic performance compared to a single Savonius rotor. Effects of the V-shaped shield angle and distance from the rotors on the aerodynamic performance of the turbine are studied numeri

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13

Gupta, Rajat, Bachu Deb, and R. D. Misra. "Performance Analysis of a Helical Savonius Rotor with Shaft at 45° Twist Angle Using CFD." Mechanical Engineering Research 3, no. 1 (2013): 118. http://dx.doi.org/10.5539/mer.v3n1p118.

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Helical Savonius rotor is considered to be superior to conventional Savonius rotor in terms of higher power coefficient (Cp) and better starting characteristic. However studies related to helical Savonius rotors is few. In view of this, in this paper, the performance of a helical Savonius rotor with shaft at 45° bucket twist angle for one complete cycle of rotation was analyzed using Computational Fluid Dynamics. A two-bucket helical Savonius rotor with shaft was designed using GAMBIT, having a height of 60 cm and diameter of 17 cm with 45° bucket twist angle. A three dimensional Computational

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14

Tang, Zhi Peng, Ying Xue Yao, Liang Zhou, and Q. Yao. "Optimal Design of a New Type of Savonius Rotor Using Simulation Analysis." Key Engineering Materials 499 (January 2012): 120–25. http://dx.doi.org/10.4028/www.scientific.net/kem.499.120.

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In order to enhance the efficiency of the Savonius rotor, this paper designs a new type of Savonius rotor with a rectifier. By using Computational Fluid Dynamics software to simulate and optimize the various parameters which affect the efficiency of the rotor. The sliding mesh method is applied here. The Cp-λ curves of wind turbine with different structural parameters are obtained after numerical simulation of flow field. On this basis, this paper gets the optimal structural parameters. And the results indicated that this new type of Savonius rotor has great improvement of efficiency compared

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15

Shishkin, Nikolai, and Roman Il’in. "Experimental determination of the energy efficiency of rotors of vertical-axis wind turbines for autonomous power supply on land and at sea." MATEC Web of Conferences 245 (2018): 06016. http://dx.doi.org/10.1051/matecconf/201824506016.

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For the first time, experimental studies have been performed to assess the effect of flaps with triangular elements on the operation of the N-Darrieus and Savonius rotors. It has been established that the rotational speed of the original N-Darrieus and Savonius rotors having blades with flaps is greater than the rotation frequency of the N-Darrieus and Savonius rotors of the known construction by 18%, and the power factors of the N-Darrieus and Savonius rotors are for 17% and 19% more. Optimization of the geometrical parameters of the blades can lead to an increase in the power factor of the N

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16

Sineglazov, Victor, and Oleksandr Stanislavchuk. "Automation Disign of Hybrid Vertical-axial Rotors." Electronics and Control Systems 4, no. 70 (2022): 44–50. http://dx.doi.org/10.18372/1990-5548.70.16755.

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The paper proves the need to create vertical-axial rotors of wind power plants in the city strip, which can be placed on roofs, which makes it possible to increase their energy efficiency by 60-70%. It is shown that the placement of such rotors on the roofs has its own characteristics, which is the need to take into account the relief of the roof of the house, its surface area, rose and wind speed over it and others. Examples of wind farms are considered and it is proved that their energy efficiency can be increased by using hybrid vertical-axial rotors, which consist of a combination of Darri

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17

Ghafoorian, Farzad, Sina Hosseini Rad, and Mahdi Moghimi. "Enhancing Self-Starting Capability and Efficiency of Hybrid Darrieus–Savonius Vertical Axis Wind Turbines with a Dual-Shaft Configuration." Machines 13, no. 2 (2025): 87. https://doi.org/10.3390/machines13020087.

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Self-starting capability has consistently presented a significant challenge for Darrieus vertical axis wind turbines (VAWTs). One advantageous approach to addressing this problem is the design of a hybrid Darrieus–Savonius VAWT. The hybrid VAWT enhances self-starting capability by increasing the power coefficient (Cp) within the low tip speed ratio (TSR) range and the torque coefficient (Cm) at initial azimuth angles, when the blades transition from windward to upwind position. A significant challenge associated with conventional hybrid VAWTs, in which both rotors are mounted on a single shaft

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18

Riady, Muhammad Ihsan, Dyos Santoso, Bazlina Dawami Afrah, Juliet Patricia Arsadha, Rupinder Rupinder, and Miftahurrizka Afrah. "Studi eksperimental turbin angin kombinasi sumbu vertikal darrieus-savonius dengan poros kembar." Jurnal Teknik Kimia 28, no. 1 (2022): 28–36. http://dx.doi.org/10.36706/jtk.v28i1.975.

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Energi angin merupakan salah satu sumber energi terbarukan yang melimpah di Indonesia. Potensi angin yang besar ini dapat dimanfaatkan dengan menggunakan turbin angin sebagai teknologi yang ramah lingkungan. Turbin angin Savonius dan turbin angin Darrieus merupakan turbin angin sumbu vertikal yang sesuai dengan karakteristik angin yang tersedia. Pada penelitian ini, turbin Darrieus dikombinasikan dengan turbin Savonius dalam rangka memperbaiki kemampuan self-starting turbin tersebut. Untuk mendapatkan performansi turbin yang lebih baik, daya yang dihasilkan oleh turbin Savonius juga dimanfaatk

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19

Golecha, K., M. A. Kamoji, S. B. Kedare, and S. V. Prabhu. "Review on Savonius Rotor for Harnessing Wind Energy." Wind Engineering 36, no. 6 (2012): 605–45. http://dx.doi.org/10.1260/0309-524x.36.6.605.

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Wind machines convert kinetic energy of the wind into usable form of mechanical energy or electrical energy. The Savonius rotor is a vertical axis wind machine which is simple in design. High starting torque characteristics make it suitable for standalone power generation as well as water pumping applications. This paper reviews the literature on the performance characteristics of the Savonius rotor. Multi-bladed rotor, multistage rotor, shape of the blade, use of deflecting plate, guide vanes and nozzle augmentation are several ways to enhance the performance characteristics. This review woul

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20

Sahim, Kaprawi, Dyos Santoso, and Dewi Puspitasari. "Investigations on the Effect of Radius Rotor in Combined Darrieus-Savonius Wind Turbine." International Journal of Rotating Machinery 2018 (2018): 1–7. http://dx.doi.org/10.1155/2018/3568542.

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Renewable sources of energy, abundant in availability, are needed to be exploited with adaptable technology. For wind energy, the wind turbine is very well adapted to generate electricity. Among the different typologies, small scale Vertical Axis Wind Turbines (VAWT) present the greatest potential for off-grid power generation at low wind speeds. The combined Darrieus-Savonius wind turbine is intended to enhance the performance of the Darrieus rotor in low speed. In combined turbine, the Savonius buckets are always attached at the rotor shaft and the Darrieus blades are installed far from the

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21

Adhikary, Anik, Md Quamrul Islam, and Mohammad Ali. "PERFORMANCE OF A STATIONARY SAVONIUS ROTOR WITH CIRCULAR ARC BLADE PROFILE." Journal of Mechanical Engineering 43, no. 2 (2014): 77–81. http://dx.doi.org/10.3329/jme.v43i2.17830.

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Static torque and drag coefficients of a stationary Savonius rotor with circular arc blade profile havebeen investigated by measuring the pressure distribution on the blade surfaces for different rotor angles.Experiments have been performed at a Reynolds Number 1.8×105 with rotors having no overlap. Resultsindicate that static torque coefficients vary considerably with the rotor angle.DOI: http://dx.doi.org/10.3329/jme.v43i2.17830

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22

Zhang, Hongfu, Zhiqiang Li, Dabo Xin, and Jian Zhan. "Improvement of Aerodynamic Performance of Savonius Wind Rotor Using Straight-Arc Curtain." Applied Sciences 10, no. 20 (2020): 7216. http://dx.doi.org/10.3390/app10207216.

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A straight and an arc-shaped curtain are combined to enhance the aerodynamic performance of the Savonius wind rotor. The straight-arc curtain is placed in front of the Savonius wind rotor to reduce the negative moment on the convex blade and increase the positive moment on the concave blade. The static and dynamic performances of the Savonius wind rotor with and without the curtain are investigated based on the computational fluid dynamics method. The results show that the static torque is higher with the curtain than without it at the same angle-of-attack. The maximum mean power coefficient w

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23

Amin, Muhammad Zainal Roisul, and Bambang Sri Kaloko. "Sistem Kontrol Sudut Blade Turbin Savonius dengan Metode Regresi Linier Berganda untuk Optimasi Pembangkit Listrik Tenaga Angin." Techné : Jurnal Ilmiah Elektroteknika 23, no. 1 (2024): 11–20. http://dx.doi.org/10.31358/techne.v23i1.378.

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Solusi paling ideal untuk mengatasi ketergantungan terhadap energi fosil adalah dengan mengembangkan energi terbarukan. Salah satu sumber energi terbarukan adalah tenaga angin. Energi angin merupakan energi bersih yang tidak akan mencemari lingkungan selama proses produksi. Turbin yang cocok untuk kecepatan angin rendah adalah turbin angin sumbu vertikal Savonius karena torsi awalnya yang tinggi. Turbin memiliki bentuk dan struktur yang sederhana, disusun menyerupai huruf S. Kecepatan angin yang tidak menentu inilah yang menyebabkan turbin angin vertikal dengan bentuk rotor Savonius S cocok da

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24

Mochamad Bastomi. "UJI EKSPERIMENTAL PENGARUH RASIO LEBAR DAN TINGGI SUDU SAVONIUS TAMBAHAN PADA ROTOR TURBIN ANGIN SUMBU VERTIKAL DARRIEUS TERHADAP KEMAMPUAN SELF STARTING DAN JUMLAH PUTARAN TURBIN." Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin 10, no. 2 (2020): 43–48. http://dx.doi.org/10.35814/teknobiz.v10i2.1518.

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Belum tersedianya jaringan listrik di daerah pedalaman membuka peluang pemanfaatan energi angin sebagai sumber pembangkit listrik. Turbin Angin Sumbu Vertikal (TASV) Darrieus memiliki efisiensi tinggi sebagai pembangkit listrik tetapi tidak mampu self starting pada kecepatan angin rendah. Penelitian ini membahas tentang pengaruh rasio lebar dan tinggi sudu Savonius tambahan pada rotor TASV Darrieus troposkein terhadap kemampuan self starting dan jumlah putaran turbin. Metode yang digunakan adalah eksperimen dengan variasi desain sudu Savonius tambahan pada rasio lebar dan tinggi rotor 0.718, 0

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Ahmad, Elsadic Salim. "A Study of the Influence of Guide Vane Design to Increase Savonius Wind Turbine Performance." Modern Applied Science 9, no. 11 (2015): 222. http://dx.doi.org/10.5539/mas.v9n11p222.

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<p>This work experimentally studied the influence of guide vane design to increase Savonius rotor performance. Guide vane is one of additional device that its function is for directing wind stream on to concave blade and deserves as obstacle of the wind that flowing on to convex blade. That way increased wind speeds to the rotor, consequently it produced higher power coefficient and the Savonius rotor performed better performance. Four designs of guide vane were arranged in this study. They are basic design of guide vane and basic design of guide vane that added a tilt angle on the top a

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26

Al-Ghriybah, Mohanad, Mohd Fadhli Zulkafli, Djamal Hissein Didane, and Sofian Mohd. "Performance of Double Blade Savonius Rotor at Low Rotational Speed." Journal of Computational and Theoretical Nanoscience 17, no. 2 (2020): 729–35. http://dx.doi.org/10.1166/jctn.2020.8711.

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The performance of the single and double blade Savonius rotors are numerically analyzed using the K-ε/realizable turbulence model. The computations are implemented at different values of tipspeed ratio from 0.2 to 0.4 with a step of 0.05. Both rotors have the same dimensions with an external overlap between their blades equals 0.02 m. The results indicate that the double blade rotor performs better than the single blade rotor in terms of power coefficient. In addition, the torque coefficient is improved at all tested values of tip-speed ratio. Furthermore, the results of the simulation show th

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27

Shaughnessy, B. M., and S. D. Probert. "Partially-blocked savonius rotor." Applied Energy 43, no. 4 (1992): 239–49. http://dx.doi.org/10.1016/0306-2619(92)90024-6.

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Harsanto, Tedy, Haryo Dwi Prananto, Esmar Budi, and Hadi Nasbey. "Design and Contruction of Vertical Axis Wind Turbine Triple-Stage Savonius Type as the Alternative Wind Power Plant." KnE Energy 2, no. 2 (2015): 172. http://dx.doi.org/10.18502/ken.v2i2.373.

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<p>A vertical axis wind turbine triple-stage savonius type has been created by using simple materials to generate electricity for the alternative wind power plant. The objective of this research is to design a simple wind turbine which can operate with low wind speed. The turbine was designed by making three savonius rotors and then varied the structure of angle on the three rotors, 0˚, 90˚ and 120˚. The dimension of the three rotors are created equal with each rotor diameter 35 cm and each rotor height 19 cm. The turbine was tested by using blower as the wind sources. Through the measur

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29

Blanco, Javier, Juan de Dios Rodriguez, Antonio Couce, and Maria Isabel Lamas. "Proposal of a Nature-Inspired Shape for a Vertical Axis Wind Turbine and Comparison of Its Performance with a Semicircular Blade Profile." Applied Sciences 11, no. 13 (2021): 6198. http://dx.doi.org/10.3390/app11136198.

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In order to improve the efficiency of the Savonius type vertical axis wind turbine, the present work analyzes an improvement based on an innovative rotor geometry. The rotor blades are inspired on an organic shape mathematically analyzed, the Fibonacci’s spiral, presented in many nature systems as well as in art. This rotor was analyzed in a wind tunnel and through a CFD model. The power coefficients at different tip speed ratios (TSR) were characterized and compared for the Savonius turbine and two versions using the Fibonacci’s spiral. One of the proposed geometries improves the performance

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30

Sineglazov, Victor, and Oleksandr Stanislavchuk. "Intelegence Design of Hybrid Vertical-axis Rotors." Electronics and Control Systems 4, no. 78 (2023): 52–56. http://dx.doi.org/10.18372/1990-5548.78.18275.

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The work is devoted to the necessity of creating the vertical-axis rotors of wind power stations in the urban area, which can be placed on roofs and makes it possible to increase their energy productivity by 60-70%. It is shown that the locations of such rotors on roofs has its own characteristics, which consists in the need to take into account the shape of the topography of the house, its storey, the direction and speed of the winds above it, and others. Examples of implementation of wind farms are considered and it is proven that their energy efficiency can be increased due to the use of hy

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31

Ahmad, Muhammad, and Iram Rehman. "Investigating Aerodynamic Performance of Vertical Axis Wind Turbines Using Computational Techniques." Journal of Power Generation Technology 1, no. 1 (2023): 20. https://doi.org/10.61369/jpgt.0568.

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Abstract: This paper presents a comprehensive&nbsp;aerodynamic analysis of H-Rotor Darrieus and&nbsp;Savonius turbines utilizing advanced computational&nbsp;fluid dynamics (CFD) techniques. H-Rotor Darrieus&nbsp;turbines, characterized by fixed blades, often&nbsp;encounter challenges with self-starting, while Savonius&nbsp;turbines exhibit good starting capabilities albeit with&nbsp;lower power coefficients (Cp). In this study, the sliding&nbsp;mesh technique was employed to investigate the&nbsp;intricate flow fields over the airfoil geometry, H-Rotor&nb

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32

Ogawa, T., H. Yoshida, and Y. Yokota. "Development of Rotational Speed Control Systems for a Savonius-Type Wind Turbine." Journal of Fluids Engineering 111, no. 1 (1989): 53–58. http://dx.doi.org/10.1115/1.3243598.

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An attempt is made here to increase the output of a Savonius rotor by using a flow deflecting plate. When the deflecting plate is located at the optimum position, the rotor power increases nearly 30 percent over that when no deflecting plate is present. The rotor torque was found to become almost zero, when the plate is placed just in front of the rotor. In addition, two systems to control the rotational speed of a Savonius rotor are developed. These permit the rotor to be stopped in strong wind. Operating characteristics of the two control systems are investigated.

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Lajnef, Mariem, Mabrouk Mosbahi, Mouna Derbel, et al. "Performance Investigation of a Twisted Savonius Wind Rotor." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 128, no. 1 (2025): 1–18. https://doi.org/10.37934/arfmts.128.1.118.

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For human welfare, electrical power is necessary. For many years, there has been a great deal of interest in wind energy because it is a clean, sustainable energy source. Because of its cheaper cost and independence from wind direction, the Savonius vertical axis wind rotor has the advantage of being suitable for certain implementations as an energy converter. Several studies have been carried out to increase its efficiency. In this paper, a novel blade design of a twisted Savonius wind rotor has been investigated numerically with the intention of performance betterment. Three-dimensional unst

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34

Abdel-razak, Mahmoud H., Mohamed Emam, Shinichi Ookawara, and Hamdy Hassan. "Optimization of the power performance for three hybrid Darrieus-Savonius rotors based on the Taguchi method." Journal of Physics: Conference Series 2857, no. 1 (2024): 012011. http://dx.doi.org/10.1088/1742-6596/2857/1/012011.

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Abstract The hybrid vertical-axis wind turbine is a unique design that overcomes the efficiency limitations of Savonius rotors and the start-up challenges of Darrieus rotors. This study uses the Taguchi optimization method to enhance the performance of a cluster of three hybrid Darrieus-Savonius vertical-axis wind turbines. The optimized parameters include distances between adjacent turbine centers, configuration angles, rotational directions, and the pitch angle. The study is the first to investigate the effect of varying the pitch angle of Darrieus airfoil blades on hybrid design performance

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35

Mohan Kumar, Palanisamy, Mohan Ram Surya, Krishnamoorthi Sivalingam, Teik-Cheng Lim, Seeram Ramakrishna, and He Wei. "Computational Optimization of Adaptive Hybrid Darrieus Turbine: Part 1." Fluids 4, no. 2 (2019): 90. http://dx.doi.org/10.3390/fluids4020090.

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Darrieus-type Vertical Axis Wind Turbines (VAWT) are promising for small scale decentralized power generation because of their unique advantages such as simple design, insensitive to wind direction, reliability, and ease of maintenance. Despite these positive aspects, poor self-starting capability and low efficiency in weak and unsteady winds deteriorate further development. Adaptive Hybrid Darrieus Turbine (AHDT) was proposed by the author in the past study as a potential solution to enhance low wind speed characteristics. The objective of the current research is to optimize the parameters of

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36

Mohd Halmy, Muhammad Syahmy, Djamal Hissein Didane, Lukmon Owolabi Afolabi, and Sami Al-Alimi. "Computational Fluid Dynamics (CFD) Study on the Effect of the Number of Blades on the Performance of Double-Stage Savonius Rotor." CFD Letters 13, no. 4 (2021): 1–10. http://dx.doi.org/10.37934/cfdl.13.4.110.

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Wind energy is known as renewable energy with the properties of the free, abundant and readily available source of energy. Wind power has now been seen as an alternative way to generate electricity. However, the existing wind turbines to harness this energy, which is used to transform wind kinetic energy into electricity still suffer low conversion capabilities. This study is therefore set out to evaluate the performance of a double-stage Savonius-type rotor while aiming to examine the effectiveness of this technique in increasing the efficiency while overcoming the inherent low inefficiency o

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37

Li, Yan, Jun Rui Chai, Fa Ning Dang, Fang Feng, and Wen Qiang Tian. "Numerical Simulation on Static Performance of Savonius Rotor Based on Different Turbulence Models." Advanced Materials Research 488-489 (March 2012): 1238–42. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.1238.

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With the advance of computer technology, numerical simulations were widely used for designing wind turbine. Savonius rotor is a kind of drag type wind turbine often used for water pumping for its good torque performance. In this study, numerical computations were carried out based on three different turbulence models including Splart-Allaras (S-A) model, k-εmodel and k- ωmodel to compute the static torque performance at different attack angles. Flow fields around the Savonius rotor were obtained. Comparing the computation results with the experimental results, the effects of turbulence models

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38

Varia, Manthan N. "Aerodynamic Analysis of Novel Savonius Rotor." International Journal for Research in Applied Science and Engineering Technology 9, no. 11 (2021): 1055–61. http://dx.doi.org/10.22214/ijraset.2021.38979.

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Abstract: Wind is a renewable form of energy that holds vital solutions to energy crisis that will be faced in the possible future. Apart from the viable lift based turbines that we have been working on, research can be done on drag based turbines that can be installed in urban areas for short power requirements. The research aims at developing a novel design for Savonius type rotor which will help to improve the power producing characteristics of the turbine. CFD fluent analysis will help in analysis of the proposed blade shape. The results explain how the combination of elliptical profiled b

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39

Wong, K. H., J. S. Y. Foo, W. T. Chong, S. Mat, and J. H. Ng. "Experimental investigation into the effects of endplate designs for a Savonius turbine." IOP Conference Series: Earth and Environmental Science 1372, no. 1 (2024): 012010. http://dx.doi.org/10.1088/1755-1315/1372/1/012010.

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Abstract Wind energy is experiencing a trend of exponential growth in both literature and industrial employment, emphasizing its current pivotal role in achieving carbon neutrality by replacing fossil fuels. Vertical axis wind turbines (VAWTs) particularly Savonius rotors operate at a lower tip-speed-ratio (TSR) range compared to horizontal axis wind turbines (HAWTs). The Savonius rotor has good starting characteristics, making it suitable to be placed in urban areas with lower wind speeds. Due to its low efficiency, studies on augmentation and optimization have been conducted to improve its b

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40

Sahim, Kaprawi, Dyos Santoso, and Agus Radentan. "Performance of Combined Water Turbine with Semielliptic Section of the Savonius Rotor." International Journal of Rotating Machinery 2013 (2013): 1–5. http://dx.doi.org/10.1155/2013/985943.

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The Darrieus turbine is a suitable power generation in free stream flow because it is simple in construction, but it has the disadvantage of its small starting torque. The Savonius turbine has a high starting torque but the efficiency is smaller than that of Darrieus turbine. To improve the starting torque of Darrieus turbine, the Savonius buckets are introduced into the Darrieus turbine and the combined turbine is called Darrieus-Savonius turbine. In this study, three semielliptic sections of aspect ratio 0.8 were used for Savonius bucket while the Darrieus blade used three wings of airfoil N

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41

Rajkumar, M. Jaya, and U. K. Saha. "Valve-Aided Twisted Savonius Rotor." Wind Engineering 30, no. 3 (2006): 243–54. http://dx.doi.org/10.1260/030952406778606269.

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42

Brusca, S., A. Galvagno, R. Lanzafame, S. Mauro, and M. Messina. "How to Increase Savonius Power Coefficient: Ducted Rotor Performance with Different Overlap Ratios." Journal of Physics: Conference Series 2385, no. 1 (2022): 012105. http://dx.doi.org/10.1088/1742-6596/2385/1/012105.

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Abstract The use of ducted configuration to increase the efficiency of wind turbine rotors is gaining wide attention in the scientific community. Specifically for mini and micro rotors in urban environment applications this solution demonstrated to be very attractive. The possibility to overcome the Betz limit for power coefficient was widely demonstrated in ducted horizontal axis wind turbines. However, very few studies have dealt with ducted Savonius rotor despite these rotors represented an efficient solution for urban environment thanks to their simplicity, their cheapness and the low cut

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43

Guseva, Yu V., S. A. Kostryukov, and A. R. Vasilev. "Laboratory model of the Savonius rotor." Power engineering: research, equipment, technology 24, no. 3 (2022): 83–90. http://dx.doi.org/10.30724/1998-9903-2022-24-3-83-90.

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THE PURPOSE. Increasing the efficiency and efficiency of power plants based on renewable energy sources should be carried out by improving technological, constructive, organizational, legal, technical and economic measures. Proposals are given for the development of approaches to assessing the efficiency of wind power plants based on the Savonius rotor. The design parameters are substantiated and a physical model is created for a comprehensive study and performance characteristics in laboratory conditions.METHODS. Based on the methods of physical and mathematical modeling of structures and pro

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44

Sumiati, Ruzita, Uyung Gatot S. Dinata, Dendi Adi Saputra Saputra, and Yusuf Dewantoro Herlambang. "Enhancing Savonius Rotor Performance with Zigzag in Concave Surface-CFD Investigation." CFD Letters 17, no. 2 (2024): 100–114. http://dx.doi.org/10.37934/cfdl.17.2.100114.

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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 an

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45

Mercado-Colmenero, Jorge Manuel, Miguel Angel Rubio-Paramio, Francisca Guerrero-Villar, and Cristina Martín-Doñate. "A numerical and experimental study of a new Savonius wind rotor adaptation based on product design requirements." Energy Conversion and Management 158 (January 9, 2018): 210–34. https://doi.org/10.1016/j.enconman.2017.12.058.

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The researching consist on presenting the numerical-experimental study carried out on a new rotor adapted from a Savonius rotor. Aesthetic, ergonomic and functional requirements have been incorporated into it in order to be part of sustainable consumer products. The new rotor consists of a parametric model adaptable to the dimensions and geometry of the products which it will be part of. A set of translation, symmetry, rotation and scaling operations have been applied to the bucket sections of the Savonius rotor by means of transforming the initial cylindrical buckets into topological surfaces

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46

Alhakiem, Faris Zaiem, Mietra Anggara, and Sopyan Ali Rohman. "ANALISIS SUDUT LENGKUNG SUDU HORIZONTAL AXIS SAVONIUS WATER TURBINE PADA PIPA AIR VERTIKAL MENGGUNAKAN COMPUTATIONAL FLUID DYNAMIC (CFD)." Hexagon Jurnal Teknik dan Sains 2, no. 1 (2021): 8–11. http://dx.doi.org/10.36761/hexagon.v2i1.870.

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Sumber daya air di Indonesia sangat menjanjikan untuk digunakan sebagai sumber energi terbarukan melihat curah hujan yang tinggi dan dapat dimanfaatkan untuk pembangkit listrik pada saluran pembuangan air hujan berskala pico. Turbin savonius merupakan salah satu pembangkit listrik yang mampu memanfaatkan energi kinetik pada aliran air yang berkecepatan rendah dan ketinggian head yang rendah. Penelitian terdahulu dilakukan untuk mengetahui desain yang efisien pada turbin savonius, salah satunya memuntir rotor dan menghasilkan hasil yang lebih baik dibandingkan model rotor biasa. Pada penelitian

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47

Eftekhari, Hesam, Abdulkareem Sh Mahdi Al-Obaidi, and Sucharita Srirangam. "Numerical Investigation of Hybrid Savonius-Darrieus Vertical Axis Wind Turbine at Low Wind Speeds." Journal of Physics: Conference Series 2523, no. 1 (2023): 012032. http://dx.doi.org/10.1088/1742-6596/2523/1/012032.

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Abstract The need for electricity on the Earth is increasing day by day, and this requires building more electric power plants where most of the power plants cause CO2 emission which would increase the global warming. Using wind energy as one type of renewable energies, would contribute to reduce the global warming. In countries such as Malaysia where the average annual wind speed is 2-2.5 m/s using wind energy is a challenge because of the low wind speed. However, using a hybrid Savonius-Darrieus vertical axis wind turbine in low wind speed areas, the performance of the wind turbine may incre

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48

Suprayogi, Dedy Triawan, Hadi Setiawan, Alwan Habibie, Muhammad Adjie, and Faqih Atard Rahman. "Development of Savonius Rotor Based on Bezier Curve for Vertical Axis Marine Current Turbine at Sunda Strait, Hindia Ocean." Engineering Innovations 11 (June 26, 2024): 69–74. http://dx.doi.org/10.4028/p-tvv8pq.

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Due to its strategic location and ocean currents, the Sunda Strait has the potential to produce energy that might be used as a source of electricity. As a result, this strait area urgently needs a suitable turbine design. This strait's most significant sea current speed is 1 (one) m/s. The Savonius rotor is one of the rotor kinds of turbines that can operate in the slow sea current—modifying the rotor from semi-circular to use the Bezier curve for the shape to optimize the performance. This paper will discuss the design of the Savonius rotor using the Bezier curve, that have improved performan

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49

Samiran, N. Afzanizam, A. A. Wahab, Mohd Sofian, and N. Rosly. "Simulation Study on the Performance of Vertical Axis Wind Turbine." Applied Mechanics and Materials 465-466 (December 2013): 270–74. http://dx.doi.org/10.4028/www.scientific.net/amm.465-466.270.

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The present study considered the design improvement of Savonius rotor, in order to increase the efficiency of output power. An investigation was conducted to study the effect of geometrical configuration on the performance of the rotor in terms of coefficient of torque, coefficient of power and power output. Modification of conventional geometry has been designed by combining the effect of number of blades and shielding method. CFD simulation was conducted to analyze the flow characteristic and calculate the torque coefficient of all the rotor configurations. The continuity and Reynolds Averag

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50

Irawan, Elysa Nensy, Sandro Sitompul, Ken-Ichiro Yamashita, and Goro Fujita. "The Effect of Rotor Radius Ratio on The Performance of Hybrid Vertical Axis Wind Turbine Savonius-Darrieus NREL S809." Journal of Energy and Power Technology 05, no. 01 (2023): 1–12. http://dx.doi.org/10.21926/jept.2301001.

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This research aims to know the effect of the Rotor Radius Ratio on the performance of the hybrid Vertical Axis Wind Turbine Savonius-Darrieus NREL S809 model using the Computational Fluid Dynamics method. Two-bladed Savonius is used as an internal rotor, and three-bladed Darrieus NREL S809 as an external rotor. Turbine model performance is analyzed through the value of the Moment Coefficient and Power Coefficient. The result shows that the increase in the Rotor Radius Ratio value causes an increase in the initial Moment Coefficient but a decrease in the maximum Power Coefficient value. At the

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