Relevant bibliographies by topics / Savonius rotor

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Savonius rotor'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 June 2025

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Journal articles on the topic "Savonius rotor"

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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 the performance characteristics of presence of deflector and Savonius rotor in Darrieus-Savonius turbine. Results conclude that the single deflector plate placed on returning blade side increases the torque and power coefficient. The presence of Savonius rotor increases the torque at a lower speed, but the power coefficient decreases. The torque and power coefficient characteristics depend on the aspect ratio of Savonius rotor.
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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 (May 27, 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 compared with that of traditional Savonius rotors. The results show that the average static torque coefficient of the rotor is 0.291, which is higher than the 0.222 of the Savonius rotor. The static vibration amplitude of the rotor is 0.375, which is lower than 0.709 of the Savonius rotor. The maximum power coefficient of the rotor is 0.228, which is also higher than the 0.226 of the Savonius rotor. The dynamic vibration amplitude of the novel rotor is 0.183, which is lower than the 0.492 of the Savonius rotor. The flow field analyses show that structure of the S-shaped blades can smooth the flow field and reduce the blocking effect in the overlap area. The study indicates that the proposed navel rotor can not only overcome the problems of sharp change in the internal flow field of traditional Savonius rotors, but also provide better operating stability and higher wind energy utilization.
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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 fluid-solid coupling analysis for the Savonius wind turbine is used to calculate the power characteristics and efficiency of the wind turbine.
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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 (March 6, 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 a power coefficient of 0.26 at an optimal tip-speed ratio of 2.7, marking a 180% improvement over standalone Savonius rotors. The hybridization process mitigates the low-speed inefficiencies of the Savonius rotor. It compensates for the high-speed limitations of the Darrieus rotor, resulting in a turbine capable of operating efficiently over a wider range of wind speeds. This balanced integration maximizes energy harvesting and improves adaptability to varying wind conditions, achieving balanced and synergistic performance.
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Redchyts, Dmytro, Koldo Portal-Porras, Serhii Tarasov, Svitlana Moiseienko, Uliana Tuchyna, Natalya Starun, and Unai Fernandez-Gamiz. "Aerodynamic Performance of Vertical-Axis Wind Turbines." Journal of Marine Science and Engineering 11, no. 7 (July 5, 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 flows surrounding the Darrieus and Savonius rotors were studied, and as a part of these investigations, the major phases of vortex progress were identified. For this purpose, three series of computer tests on the aerodynamic and power properties of Savonius rotors with two and three buckets were performed, and their results are also presented. The influence of tip-speed ratio, solidity, and Reynolds numbers on the power coefficients of the Darrieus and Savonius rotors was investigated. It has been demonstrated that increasing Reynolds number from 104 to 106 causes a rise in Darrieus rotors power coefficient from 0.15 up to 0.5. The maximum values of power coefficient are moved away from higher values of tip-speed ratio from 2 to 5 as a result of a decrease in Darrieus rotor solidity from 1.0 to 0.33. The greatest power coefficient for a Savonius rotor with two blades is 0.23 and for a Savonius rotor with three blades is 0.19.
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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 estimated. The main result was that wind turbines of the same aspect ratio have different performances.
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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) (February 28, 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 Savonius rotor in hydrokinetic turbine applications. The test results revealed that incorporating grooves led to notable improvements in efficiency (ɳ) and coefficient of drag (CD). Grooved blades exhibited a maximum efficiency of 30.97 % and a maximum drag coefficient of 2.71. Notably, blades with a groove width of 12.5 mm emerged as the optimal model, demonstrating an efficiency peak of 35.66 % and a drag coefficient 3.08. This indicates a substantial increase in efficiency by 4.69 % and a corresponding rise in the drag coefficient by 0.37 for grooved blades. The grooves on grooved blades increase friction, improving performance. Grooved rotor blades improve turbine performance significantly. Savonius rotor models in hydrokinetic turbines extract more energy by optimizing groove width and arrangement to maximize drag coefficient and efficiency. This research affects hydrokinetic turbine design and optimization for renewable energy generation. Engineers and designers can improve the performance and efficiency of the Savonius rotor model in hydrokinetic turbine applications by applying this study’s findings
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Doerffer, Krzysztof, Janusz Telega, Piotr Doerffer, Paulina Hercel, and Andrzej Tomporowski. "Dependence of Power Characteristics on Savonius Rotor Segmentation." Energies 14, no. 10 (May 18, 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 results shown in the literature are inconsistent. The paper presents a new observation that the relation between the effectiveness of single- and multi-segment rotors depends on the wind velocity. A single-segment rotor becomes significantly more effective than a four-segment rotor at low wind speeds. At high wind speeds, the effectiveness of both rotors becomes similar.
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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 (February 28, 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 three-dimensional modeling techniques with Ansys software, specifically utilizing the CFX solver. An optimization of the Savonius rotor design was conducted on a two-stage rotor, utilizing PSA variations of 0˚, 15˚, 30˚, 45˚, 60˚, 75˚ and 90˚. The technology employed in this study is computational fluid dynamics (CFD), which is performed assuming steady-state boundary conditions. The turbulent behavior of fluid flow is effectively captured by the SST turbulence model. The velocity of the fluid entrance is established at 6 m/s, while the pressure of the output is consistently maintained at 1 atm. The Savonius rotor variant, including a pitch angle angle (PSA) of 15°, demonstrates a coefficient of power of 0.32, which is widely regarded as the most ideal. The performance of the two-stage Savonius design can be further evaluated by considering its performance at angles of 0° and 30°, as it exhibits commendable performance.
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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 improve both efficiency and starting torque; 3)Adding auxiliary devices such as curtain or guide-box to decrease the negative torque. We conclude with a discussion of the advantages and challenges associated with development of this promising technology.
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Dissertations / Theses on the topic "Savonius rotor"

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Záviška, Radek. "Savoniova větrná turbína." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231799.

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The diploma thesis is focused on designer works of Savounius rotor for Raječko location. Finish of this design work is equipment, which will be used in this location as decentralized source of electrical energy. In thesis are written manufacturing processes as so as the process of design part including the calculation part, which is focused on characteristic quantity of Savonius rotor. Thesis is finished by econominal assessment of project.
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Silva, André Filipe Matos da Cruz. "Desempenho de um Rotor de Savonius: avaliação experimental." Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/22250.

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Mestrado em Engenharia Mecânica<br>A energia eólica é atualmente uma fonte de energia renovável utilizada pelo homem através de diferentes mecanismos. O rotor de Savonius, uma turbina de eixo vertical, é uma opção para produção de energia em pequena escala. A produção e venda de energia elétrica à rede pública, fruto de fontes renováveis, é hoje em dia uma opção enquadrada na nossa legislação. Com base no potencial das características dos rotores de Savonius analisou-se experimentalmente quatro configurações diferentes com o intuito de comparar as suas performances, sendo que a configuração de centro aberto e pás fechadas obteve os melhores resultados ao nível de produção de energia eólica.<br>Wind energy is currently a renewable energy source used by man through different mechanisms. The Savonius rotor, a vertical-axis turbine, is an option for small-scale power production. The production and sale of electricity to the public grid, by renewable sources, is nowadays an option framed in our legislation. Based on the potential of the characteristics of the Savonius rotors, four different configurations were experimentally analyzed in order to compare their performances, being that open-center and closed-bladed configuration obtaining the best results of wind energy production.
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Achilli, Isabella. "Study of a conventional Savonius rotor and optimization of a helical prototype." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018. http://amslaurea.unibo.it/15339/.

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The aim of this Master Thesis is to study numerically the aerodynamic performance of two small examples of horizontal axis domestic wind turbines: a conventional Savonius rotor, designed and built by a group of students of the Polytech of Tours (France), and its optimization, a helical Savonius rotor. In the first research project, the exploration is conducted even experimentally, testing the turbine in a wind tunnel present in the Polytech. The numerical investigation is carried out by the use of a software based on Computational Fluid Dynamics named Star CCM+, which helps studying the main fluid dynamics aspects as flow velocity, pressure and coefficients of performance. The second project consists in a helical Savonius rotor: according to the literature, the helical shape, comparing with the conventional Savonius rotor, usually shows better performances. After the 3D design on Catia, the turbine was printed using the 3D printer, on a reduced scale. CFD simulations allow to study the fluid dynamic features. Afterwards, thanks to a comparison between the two Savonius models, the performance enhancement of the new one is shown, together with a practical understanding gained of the parameters influencing aerodynamics the most. By means of the simulations, the helical rotor presents a power coefficient of 10%, which is better than the one of the conventional rotor, found at 7% for the same Tip Speed Ratio. Consequently, even the power produced by the new turbine, resulted to be better than the conventional windmill.
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Roth, Neal Joseph. "A prototype design and performance of the Savonius rotor based irrigation system." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/25106.

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Important stages in the development of a wind energy operated irrigation system, which is simple in design and easy to maintain, are described from model tests in wind tunnels through to a prototype prepared for field tests. The attention is focussed on gross features of the protoype including the blade geometry and aspect ratio; mast, sleeve and bearing assemblies; braking system and a load matching concept. Described towards the end are the field test arrangements of the prototype and associated instrumentation. Even according to the most conservative estimate, the prototype tests suggest that the windmill should be able to deliver around 3000 liters of water per day (eight hours of wind) to a head of 5 m in a 24 km/h wind.<br>Applied Science, Faculty of<br>Mechanical Engineering, Department of<br>Graduate
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Klečka, Jiří. "Větrná elektrárna se Savoniovým rotorem pro výrobu elektrické energie." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-217858.

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Using of wind energy belongs to one of the fastest developing segments in the power production from renewable resources, which also relates to new studies and development of different types of power stations and brings new ideas to small wind sources spheres too. Savonius rotor is included in these spheres as well. This thesis deals with a complete design, realization and trial measurement of single-step Savonius rotor model. Introduction part treats of basic division and rotor utilization. Design part includes the design as well rotor graphical documentation. In the following part there is data evaluation, which leads to comparison with theoretical calculations. The final part includes an examination of possible utilization of Savonius rotor for generation of electricity.
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Hořava, Pavel. "Simulace malé větrné elektrárny se Savoniovým-Darrieovým rotorem." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220933.

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This master‘s thesis deals with the simulation of small wind power plant with Savonius-Darrieus rotor. On the base of the actuator disk theory the performance of modeled power plant is predicted in theoretical part and the power coefficient as well. The process of designing the wind model is also described in this theoretical part. The practical part of this thesis is dedicated to the creating a model of DS300 vertical axis hybrid wind turbine in Matlab/Simulink. This model was used to generating of the power curve of modeled wind power plant and for the computing of power and total produced energy during an average and above-average day as well. The whole thesis is enclosed by evaluating of obtained results.
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Ôlo, Carlos David Vaz. "Projecto de uma turbina savonius com utilização de componentes em fim-de-vida." Master's thesis, Faculdade de Ciências e Tecnologia, 2012. http://hdl.handle.net/10362/8876.

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Dissertação para obtenção do Grau de Mestre em Engenharia Mecânica<br>O objectivo do presente trabalho, passa por encontrar soluções para a reutilização de componentes em fim-de-vida, usando-os exactamente como se encontram, desempenhando as mesmas funções para que foram projectados, fazendo apenas pequenas adaptações para se adequarem à nova utilização. Para a reutilizar estes componentes a solução escolhida, foi projectar uma turbina eólica, recorrendo a componentes de automóvel. Sendo o vento um recurso natural disponível em grande parte do globo terrestre, torna aliciante a possibilidade de diminuir a pegada ambiental dos componentes, reutilizando-os, bem como produzir energia recorrendo à energia eólica. A turbina escolhida foi a de savonius, pois tem custos de fabrico reduzidos, pela simplicidade de construção e montagem bem como ser uma turbina interessante para pequenos aproveitamentos energéticos. Foi estudado o rotor de savonius para compreender os esforços a que se encontra sujeito devido à acção do vento, para posteriormente projectar a estrutura do rotor e de suporte da turbina. Durante o presente trabalho foi tido em conta, que se trata de um projecto no âmbito universitário, de modo que a turbina terá que ser polivalente para possibilitar outros estudos no futuro.
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Oliveira, Cássia Pederiva de. "Análise do desempenho de uma turbina savonius helicoidal com torção de 180º empregando simulação numérica." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/108528.

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Este trabalho apresenta a simulação numérica do escoamento turbulento em torno de uma turbina eólica de eixo vertical de pequeno porte, Savonius tipo helicoidal com torção de 180° nas pás. Com o intuito de avaliar a metodologia computacional empregada os resultados numéricos obtidos são comparados com os resultados experimental e numérico contidos no estado da arte. Também, compara-se o coeficiente de toque da turbina Savonius helicoidal com a turbina Savonius convencional. As simulações numéricas são baseadas no Método de Volumes Finitos, e para tal emprega-se o programa Fluent /Ansys versão 13.0 que resolve as equações da continuidade e as equações de Navier-Stokes com médias de Reynolds, juntamente com o modelo de turbulência . As simulações são desenvolvidas empregando diferentes malhas computacionais em estudos transientes, tridimensionais, com a turbina estacionária. A avaliação da qualidade da malha é realizada através do método de Índice de Convergência de Malha (GCI) o qual analisa o quão longe os resultados estão da solução assintótica para a malha utilizada. Após a análise da qualidade de malha, realizam-se simulações com a turbina em rotação as quais fazem uso da malha contendo uma região móvel possibilitando a imposição de uma velocidade angular ao rotor. O coeficiente de torque é obtido nas simulações e a partir dele calcula-se o coeficiente de potência. Além da análise do desempenho do rotor realiza-se uma análise qualitativa das características do escoamento sobre a turbina. A turbina Savonius helicoidal apresenta um valor de coeficiente de potência de 0,175 para a razão de velocidade de ponta de 0,58 considerando correção do efeito de bloqueio. Os resultados obtidos apresentam boa concordância com os resultados publicados por outros autores.<br>This dissertation presents the numerical simulation of the turbulent flow around of a small sized vertical axis wind turbine, consisting in a helical Savonius type with a 180° degree of blade twist. In order to evaluate the used methodology the obtained results are compared with the state of the art numerical and experimental data. It will be also presented the comparison between the torque coefficient of the conventional Savonius turbine and the helical Savonius turbine. The numerical simulations are based on the Finite Volume Method (FVM), using the commercial code Fluent/ANSYS version 13.0, which solves the continuity and Navier-Stokes through the Reynolds time-averaged methodology, including the turbulence model. The simulations are developed using different computational meshes for transient and three-dimensional studies with the stationary turbine. The evaluating the quality of the mesh is performed by of Grid Convergence Index (GCI) method which analyzes how far the results are the asymptotic solution to the mesh used. After the evaluation of the mesh quality, it was simulated a case considering the rotor motion using the moving mesh configuration, allowing the imposition of an angular velocity to the turbine. In the post-processing stage, it is possible to obtain the torque coefficient on the rotor shaft, allowing the calculation of the power coefficient for the turbine. In addition to the performance analysis, it is also made a qualitative analysis of the flow characteristics over the turbine rotor and in both cases presenting a good correspondence with the results in the literature. The helical Savonius turbine presents a value of power coefficient of 0.175 to a tip speed ratio of 0.58 whereas blocking effect correction.
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Zingman, Aron (Aron Olesen). "Optimization of a Savonius rotor vertical-axis wind turbine for use in water pumping systems in rural Honduras." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40927.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2007.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Includes bibliographical references (p. 26).<br>The D-lab Honduras team designed and constructed a wind-powered water pump in rural Honduras during IAP 2007. Currently, the system does not work under its own power and water must be pumped by hand. This thesis seeks to explore a variety of mechanism and aerodynamic changes to allow the system to function as designed. The novel modifications to the Savonius rotor that were made do not seem to improve its performance. Within the constraints of the installed components, the current rotor should perform well pending other changes. The most promising improvements to the system are weight reducing and friction reducing measures, and in combination with understanding the wind conditions in the immediate vicinity of the rotor, changes will be made this summer so that unassisted wind pumping will be possible.<br>by Aron Zingman.<br>S.B.
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Akwa, João Vicente. "Estudo numérico e experimental do escoamento sobre um rotor eólico Savonius em canal aerodinâmico com alta razão de bloqueio." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/100132.

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Neste trabalho, são inicialmente discutidas as dificuldades referentes à obtenção de resultados numéricos para a operação de uma turbina Savonius independentes do grau de discretização, tamanho de domínio de cálculo e de máximo tempo físico simulado. Também são relatadas as divergências entre as metodologias numéricas e experimentais adotadas por diversos autores, que dificultam análises e comparações dos resultados obtidos por meio dessas metodologias com os resultados próprios obtidos. Devido a esses fatos, no presente trabalho, uma série de procedimentos experimentais e numéricos são realizados para efetuar análises do escoamento sobre uma turbina eólica Savonius. Nos experimentos em canal aerodinâmico, perfis de velocidade e parâmetros da turbulência são obtidos pela técnica de anemometria de fio quente. Medições com o uso de tubos de Pitot e manômetros eletrônicos são efetuadas para avaliar a variação da pressão e os perfis de velocidade média em posições selecionadas. Além de dados para análise, informações úteis para uso como condições de contorno nas simulações numéricas também são obtidas. Os fenômenos são reproduzidos através de simulações numéricas pelo Método de Volumes Finitos, que solucionam as equações da continuidade, de Navier-Stokes com médias de Reynolds e do modelo de turbulência k-ω SST. Análises experimentais e numéricas considerando o escoamento sobre um cilindro, que mantém semelhanças com o escoamento sobre o rotor, também são realizadas. Simulações numéricas do escoamento sobre o cilindro são efetuadas, fornecendo resultados representativos do escoamento real, quando geometrias tridimensionais são aplicadas na modelagem numérica. Nas simulações do escoamento sobre o rotor Savonius em condição estática, resultados representativos do escoamento real são obtidos com o uso de uma modelagem que leva em consideração a rugosidade das pás do rotor, estacionado na posição angular de 90°. Para posições angulares menores, não se obteve uma boa concordância entre os resultados experimentais e numéricos. A realização deste trabalho fornece informações úteis para a análise do fenômeno e tem potencial para contribuir com futuros trabalhos desse tema.<br>This research work initially presents a discussion about the difficulties related to obtaining numerical results for the operation of a turbine Savonius independent of the degree of discretization, calculation domain size and maximum physical time of the simulation. The differences between the numerical and experimental methodologies adopted by various authors difficult the analysis and comparisons of the results obtained through these methods with the results obtained by the methodology. Due to these facts, in this research work, a series of experimental and numerical procedures are performed to conduct analyzes of flow over a Savonius wind turbine. In the experiments on aerodynamic channel, velocity and turbulence profiles parameters are obtained by the technique of hot wire anemometry. Measurements using Pitot tubes and electronic manometers are made to evaluate the variation of pressure and mean velocity profiles at selected positions. In addition to data analysis, useful information for use as boundary conditions in the numerical simulations are also obtained. The phenomena are reproduced through numerical simulations by Finite Volume Method, that solve the equations of continuity, Reynolds-averaged Navier–Stokes equations and the equation of the turbulence model k-ω SST. Experimental and numerical analyzes considering the flow over a cylinder, which holds similarities with the flow over the rotor, are also performed. Numerical simulations of the flow over the cylinder are made, providing results representative of the actual flow when three-dimensional geometries are applied in numerical modeling. In flow simulations over the Savonius rotor in static condition, at 90°, representative results of the actual flow are obtained using a model that takes into account the roughness of the rotor blades. For smaller angular positions a good agreement between experimental and numerical results was not obtained. This work provides useful information for the analysis of the phenomenon and has the potential to contribute to future work on this theme.
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Book chapters on the topic "Savonius rotor"

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Lajnef, Mariem, Mabrouk Mosbahi, Zied Driss, Costanza Aricò, and Tullio Tucciarelli. "Performance Study of a Helical Savonius Wind Rotor." In Lecture Notes in Mechanical Engineering, 533–42. Cham: Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-70428-4_58.

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Mabrouki, Ibrahim, Zied Driss, and Mohamed Salah Abid. "Characteristic of Savonius Vertical Axis Rotor in Water Channel." In Exergy for A Better Environment and Improved Sustainability 1, 411–27. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-62572-0_29.

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Massons, J., Jna Gavaldà, J. Escoda, X. Ruiz, and F. Díaz. "Characterization of Savonius Rotor Wake Using Image Processing Techniques." In Fluid Mechanics and Its Applications, 145–57. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-2690-8_8.

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Ayadi, Ahmed, Nour Rabeh, and Zied Driss. "Analyzing the Unsteady Behavior of a 2D Savonius Rotor." In Lecture Notes in Mechanical Engineering, 262–69. Cham: Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-89733-7_28.

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Fujisawa, Nobuyuki. "Visualization of Flow Phenomena in and Around a Savonius Rotor." In Flow Visualization VI, 289–93. Berlin, Heidelberg: Springer Berlin Heidelberg, 1992. http://dx.doi.org/10.1007/978-3-642-84824-7_49.

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Zakaria, Ahmad, and Mohd Shahrul Nizam Ibrahim. "Time Step Sensitivity Analysis of a Flow-Driven Savonius Rotor." In Advances in Material Sciences and Engineering, 225–32. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8297-0_25.

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Pudur, Rajen, Mrinal Kanti Rajak, and Shadab Zafar. "Analysis of Savonius Rotor with Multiple Blades for Hydrokinetic Application." In Lecture Notes in Mechanical Engineering, 623–34. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3497-0_50.

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Doso, Oying, and Sarsing Gao. "Power Quality Improvement of Cascaded Savonius Rotor Based Hydrokinetic Power System." In Lecture Notes in Electrical Engineering, 265–73. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-7031-5_25.

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Prabowoputra, Dandun Mahesa, Syamsul Hadi, Aditya Rio Prabowo, and Jung Min Sohn. "Performance Assessment of Water Turbine Subjected to Geometrical Alteration of Savonius Rotor." In Proceedings of the 6th International Conference and Exhibition on Sustainable Energy and Advanced Materials, 351–65. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4481-1_35.

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Driss, Zied, Olfa Mlayeh, Dorra Driss, Makram Maaloul, and Mohamed Salah Abid. "Incidence Angle Effect on the Aerodynamic Structure of an Incurved Savonius Wind Rotor." In Applied Condition Monitoring, 101–10. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14532-7_11.

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Conference papers on the topic "Savonius rotor"

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Sampelawang, Petrus, Nasaruddin Salam, Luther Sule, and Rustan Tarakka. "Performance Analysis of the Savonius-Type Rotor with Grooved Blades as a Hydrokinetic Turbine." In International Conference on Research in Engineering and Science Technology (IC-REST) 2023, 75–83. Switzerland: Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-p8uv6k.

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The Savonius-type rotor is a phenomenal rotor model applied to vertical-axis type hydrokinetic turbines, which use is quite popular even though its performance is considered lower than other rotor types. One of the advantages of the Savonius-type rotor compared to other types of vertical axis hydrokinetic rotors is that it is more effective in extracting hydrokinetic energy from low velocity water flows. This research aims to analyze the performance of the Savonius rotor by modifying the blade model by providing grooves on the concave side. Tests were carried out on a two-blade Savonius rotor without grooves and with blades using 5, 6, 7 and 8 grooves with a width of 15 mm in the direction perpendicular to the shaft with varying input loads and flow rates for several constant rotation levels. The research results indicate that the groove-less blades yielded a maximum tip speed ratio (TSR) of 1.32 and a maximum efficiency (ɳ) of 29.58%. In contrast, grooved blades produced a maximum TSR of 1.40 and a maximum efficiency of 33.71%, indicating an increase in TSR of 0.08 and an efficiency increase of 4.17 %, with the highest increase occurring on eight-groove blades.
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Rabeh, Nour, Ahmed Ayadi, and Zied Driss. "Improving the Performance of a Savonius Rotor Through Blade Shape Modification." In 2024 IEEE International Multi-Conference on Smart Systems & Green Process (IMC-SSGP), 1–4. IEEE, 2024. https://doi.org/10.1109/imc-ssgp63352.2024.10919743.

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Sokolovskaya, Maria, Sergey Kempel, and Egor Loktionov. "Enhancement of Savonius Rotor Performance with Guiding Nozzles Made of Solar Panels." In 2024 International Ural Conference on Electrical Power Engineering (UralCon), 472–76. IEEE, 2024. http://dx.doi.org/10.1109/uralcon62137.2024.10718886.

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Sokolovskaya, Maria V., Sergey V. Kempel, and Nikita V. Khlebtovskiy. "Savonius Design-based Rotor Performance Optimization with the Usage of Solar Panels as Guiding Nozzles." In 2025 7th International Youth Conference on Radio Electronics, Electrical and Power Engineering (REEPE), 1–5. IEEE, 2025. https://doi.org/10.1109/reepe63962.2025.10971111.

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Kapoor, Gaurav, Gaurav Saini, and Mohammad Zunaid. "Design and Numerical Modelling of Highway Vertical Axis Wind Turbine." In 22nd ISME International Conference on Recent Advances in Mechanical Engineering for Sustainable Development, 13–26. Switzerland: Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-4ptpul.

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Vertical axis wind turbines (VAWTs) represent a significant advancement in harnessing wind energy, offering enhanced efficiency and adaptability. Their ability to capture wind from any direction makes them particularly suitable for urban environments and areas with unpredictable wind patterns.This study describes the design and its optimization for savonius vertical axis wind turbine for application in efficient energy generation on highways and our objective is to optimize the key parameters of design, including the blade arc angle , overlap ratio, and tip speed ratio to identify the best set of design configuration using Numerical Modelling done with the help of Computational Fluid Dynamics (CFD) Study of Turbine Blade Profile and enhance efficiency indicators like power and torque coefficient to achieve an optimal level of performance. The Outcomes and key findings of this study suggested that a rotor configuration with (Ø = 130°, OR = 0.15, TSR = 1) demonstrated the highest CP of 0.473 (47.3% wind to mechanical power conversion) and a CT of 0.255 (25.5% wind to torque generation), these values suggests an enhanced performance of turbine in terms of capturing wind energy and generating torque, this provides evidence for consideration of these results while defining design criteria for the vertical axis wind turbine suitable to our application.
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Baz, Ahmed M., Nabil A. Mahmoud, Ashraf M. Hamed, and Khaled M. Youssef. "Optimization of Two and Three Rotor Savonius Wind Turbine." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-43988.

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The present work investigates the performance of Savonius wind turbine using two or three rotors. The new turbine design was found to have higher power coefficient compared with single rotor design. The peak average power coefficient of the three rotors was computed to be 50% higher than that of the single rotor design. The torque coefficient was also higher than that of the single rotor turbine at high tip speed ratio. This improved performance is attributed to the favorable aerodynamic interaction between the rotors which accelerates the flow around the rotors and generates higher turning torque in the direction of rotation for each rotor. The optimized arrangement of rotors showed that the upstream rotor and one downstream rotor should have a similar direction of rotation while the second downstream rotor is rotating in opposite direction.
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Doso, Oying, and Sarsing Gao. "A short review on savonius rotor." In PROCEEDINGS OF ADVANCED MATERIAL, ENGINEERING & TECHNOLOGY. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0024293.

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Saad, Ahmed S., Shinichi Ookawara, Ahmed Elwardany, Ibrahim I. El-Sharkawy, and Mahmoud Ahmed. "Effect of the Number of Stages on the Performance of Savonius Vertical Axis Wind Turbines: Part II — Using Twisted Blades." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23574.

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Abstract Wind energy comprises one of several renewable resources of energy engineered to contain the global energy crisis. Although horizontal axis wind turbines (HAWTs) have proven to be effective in low turbulence and steady wind conditions, vertical axis wind turbines (VAWTs) potentially have the advantage in highly variable and turbulent regions. The Savonius vertical axis wind turbine has several advantages such as simple design, low manufacturing costs, low operating wind speed, low noise, and Omni-directional capability. However, the Savonius rotor requires further design optimization to improve its aerodynamic performance before becoming competitive with other turbine designs. Thus, the main objective of the current study is to numerically investigate the aerodynamic performance of a multistage Savonius rotor to enhance the power coefficient and the ability of self-starting. In the current study, one-, two-, three-, and four-stage Savonius rotors with twisted blades are investigated. In a two-stage rotor, one single-stage rotor is mounted over another single-stage with a phase angle of 90°. In a three-stage rotor, the three single-stage rotors are mounted one above the other with a phase angle of 60° relative to one another while with a phase angle of 45° for the four stage-rotor. The blades of the studied Savonius rotor are twisted with a twist angle (φ) of 45°. This is the first contribution to understand how multi-stages influence the aerodynamic performance of the twisted-bladed Savonius rotor. Moreover, variations of torque and power coefficients are computed for all the studied rotors with various numbers of stages. The developed numerical model is simulated using ANSYS Fluent and validated using the available experimental and numerical results. Results showed that the coefficients of torque (CT) and power (CP) increase with rising the number of stages. Increasing the number of stages from 1 to 2 significantly increases the CT and CP of the rotor. However, with a further increase in the number of stages to 3 and 4 stages, both the CT and CP remains almost the same as the rotor with 2 stages. The maximum coefficient of torque (CT, max) and power (CP, max) for a two-stage rotor are 0.42 and 0.253, respectively. The gain in the coefficient of power obtained by using the two-stage Savonius rotor with twisted blades is 53.5% compared to the conventional single-stage which has a coefficient of power 0.165 at a wind velocity of 6 m/s. Moreover, using multi-stages and twisted blades significantly smooth the variations in the generated torque and produce positive values at all rotor angles resulted in improving the self-starting ability of the Savonius rotor.
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Rathod, Umang H., Vinayak Kulkarni, and Ujjwal K. Saha. "Computational Analysis of a Savonius Wind Rotor Using Bio-Inspired Corrugated Blades." In ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/gt2023-102801.

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Abstract For harvesting wind energy, especially at low-velocity regions, Savonius vertical-axis wind rotors are usually preferred. Among other variants of the vertical-axis wind rotors, the Savonius rotor has become an attractive candidate as a small-scale stand-alone system due to its direction independency, ease of fabrication and the absence of yaw-mechanism. The present paper attempts to study the effect of corrugated blades on the performance of a conventional Savonius rotor. The corrugation is a bio-inspired concept derived from the dragonfly wings. As reported in literature, the corrugation applied in the chord-wise direction of the airfoil improves the lift characteristics. This lift improvement is caused by the trapped vortices inside the corrugation that promotes a low-pressure region over the leading edge and suction surface of the airfoil. This concept of corrugation and its effect has been applied to the blades of a conventional Savonius wind rotor to improve its torque characteristics. In this paper, a rotor with corrugated semicircular blade profiles is studied by two-dimensional (2D) transient numerical simulation in ANSYS FLUENT using shear stress transport (SST) k-ω turbulence model. The simulations are conducted in the range of 5 m/s to 7 m/s to suit the lower wind velocities of the Savonius rotor. The torque and power coefficients of the corrugated semicircular-bladed rotor are calculated at the rotating conditions. Further, the pressure and local torque distributions over the corrugated blade surfaces are obtained and analyzed to understand the torque mechanism of the rotor with corrugated blade profiles. In order to have a direct comparison, the study has also been carried out for semicircular-bladed rotor without corrugation.
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Gaul, R. D., Claude P. Brancart, and Vincent Gaul. "Savonius Rotor for Offshore Wind Energy Conversion." In Offshore Technology Conference. Offshore Technology Conference, 2011. http://dx.doi.org/10.4043/21725-ms.

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