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Academic literature on the topic 'SAVONIUS BLADE'

Author: Grafiati
Published: 11 September 2023

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Journal articles on the topic "SAVONIUS BLADE"

1

Mrigua, Khalid, Mounia Zemamou, and Mohammed Aggour. "Numerical Investigation of a New Modified Savonius Wind Turbines." International Journal of Renewable Energy Development 11, no. 4 (August 7, 2022): 1113–23. http://dx.doi.org/10.14710/ijred.2022.45799.

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The classic Savonius semi-circular blade turbine has a relatively low power coefficient.The performance of a Savonius wind turbine depends on its geometrical parameters. Various blade profiles have been developed in the past years to improve the performance of this class of turbine. In this paper, a new blade shapes of Savonius wind turbine is investigated numerically by using the CFD method , by using transient conditions and set k omega turbulence model.The new blade has different concave and convex shape, which is a combination of the conventional and the elliptical blade. A comparative study of three blade profiles, semi-circular, elliptical and the composed blades have been performed.Flow structures around the rotor have also been analyzed. The results show that changing the blade shape has an effect on the performance efficiency of the Savonius turbine.The new modified and the elliptical blade exhibit higher performance compared to the conventional Savonius wind turbine. The new modified Savonius blade and the elliptical blade exhibit an improved performance compared to the conventional model in the order of 20.5% and 18.2% respectively at the tip speed ratio of 0.8.
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Damota, Javier Blanco, Juan de Dios Rodríguez García, Antonio Couce Casanova, Javier Telmo Miranda, Claudio Giovanni Caccia, and María Isabel Lamas Galdo. "Analysis of a Nature-Inspired Shape for a Vertical Axis Wind Turbine." Applied Sciences 12, no. 14 (July 12, 2022): 7018. http://dx.doi.org/10.3390/app12147018.

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Wind energy is gaining special interest worldwide due to the necessity of reducing pollutant emissions and employ renewable resources. Traditionally, horizontal axis wind turbines have been employed but certain situations require vertical axis wind turbines. With a view to improve the efficiency of a vertical axis wind turbine Savonius type, the present work proposes a bioinspired design blade profile relying on the Fibonacci spiral. This shape is repeatedly presented in nature and thus it leads to a bio-inspired blade profile. A numerical model was carried out and it was found that the Fibonacci shape improves the performance of the original Savonius shape, based on semicircular blade profiles. Particularly, the Fibonacci blade profile increases around 14% the power in comparison with the Savonius blade profile. Besides this comparison between Savonius and Fibonacci, a research study was carried out to improve the efficiency of the Fibonacci turbine. To this end, the effect of several parameters was analyzed: number of blades, aspect ratio, overlap, separation gap, and twist angle. Improvements on the average power greater than 30% were obtained.
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Jamal, Jamal. "Pengaruh Jumlah Sudu Terhadap Kinerja Turbin Savonius." INTEK: Jurnal Penelitian 6, no. 1 (May 25, 2019): 64. http://dx.doi.org/10.31963/intek.v6i1.1127.

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Savonius wind turbines are wind turbines that canoperate at low wind speeds, this type of turbine is very suitable tobe used in several places in Indonesia. The research aims toimprove the performance of the Savonius wind turbine withvariations in the number of turbine blades as well as variations inthe velocity of wind speed. The research method wasexperimental where wind turbine testing was carried out withvariations in the number of turbine blades with number of 2, 3and 4 blades, other variations carried out were wind speed at 3.5;4,5; 5.5 and 6.5 m/s. The study results show that the 2-bladeturbine produces greater rotation, but the torque moment islower than the 3 and 4 blade turbines, this can be seen in the lowefficiency of the 2 blade turbine at low wind speeds with highloading. At 3.5 m / s wind turbines 2 blade turbines haveefficiency that tends to be the same as 3 and 4 blade turbines upto 0.5 N but at loads of 0.6 - 1.2 N 2 blade turbines have lowerefficiency, while at wind speeds of 4.5 - 6.5 m / s 2 blade turbineshave greater efficiency than turbines 3 and 4 blades up to a loadof 1.2 N but if the load is added then the efficiency of 2-bladeturbines can be smaller than efficiency 3 and 4-blade.
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Rosyid, Ahmad Lazim, Ikhwanul Qiram, and Dewi Sartika. "Pengaruh Jumlah dan Rasio Sudut Lengkung Sudu Terhadap Unjuk Kerja Turbin Angin Savonius Heliks." V-MAC (Virtual of Mechanical Engineering Article) 5, no. 2 (November 17, 2020): 17–20. http://dx.doi.org/10.36526/v-mac.v5i2.1038.

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The helical Savonius is a vertical wind turbine that can utilize wind energy to become a renewable energy source. This study aims to determine the effect of the number of blades and the ratio of blade bends on the performance of the Savonius helical wind turbine. The research was conducted through experimentation using variations in the number of blades 2 and 3 blades. Variation of blade bending ratio H / L = 6/10, 7/10 and 8/10 and variations in wind speed (4.0), (5.2), (6.4) and (7.4) m / s. The turbine performance analysis is reviewed based on the shaft rotation (RPM) of the turbine and the output voltage (volts) generated by the generator connected to the turbine shaft. The results showed that the wind speed, the number of blades, and the blending ratio of the blades affect the performance of the Savonius helical wind turbine. The results of the maximum wind turbine performance test at a variation of 3 blades, a ratio of 6/10, and a wind speed of 7.4 m / s, produce a shaft rotation value of 472.9 rpm and a generator output voltage value of 5.51 volts. Keywords: Helical Savonius, number and ratio blade bend, wind speed, performance
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Purwoko, Purwoko. "PENGARUH JUMLAH DAN SUDUT PEMASANGAN SUDU TERHADAP DAYA TURBIN SAVONIUS." INFO-TEKNIK 21, no. 2 (January 25, 2021): 125. http://dx.doi.org/10.20527/infotek.v21i2.10036.

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The problem in Energy conservation is finding new opportunities for high-efficiency energy generation including wind power generating machines. Aims of this study to determine the effects of blade number and curv angle of blade mounting on the output power of a Savonius type wind turbine. This low speed wind turbine is intended to get energy at the top of a multi-storey building in an urban area. Tests were carried out on a laboratory scale, using savonius wind turbines with 400 mm diameter and 500 mm height. The driving wind speed of the turbine is set between 1.5 to 8.5 m / s. While the number of blades used is 2 types, namely rotor with three blades and rotor with 4 blades, each of which is tested on 3 different types of curv angle blade. The investigation results are expected to show that the wind tubing from each experiment will give different characteristics. This investigation results that there was increasing in efficiency in the savonius turbine with blades. The highest rotation and power occur when the turbine uses 2 blades and -50 curv angle of blade mounting
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Yudistira, Raditya, Dwi Anung Nindito, and Raden Haryo Saputra. "Uji Eksperimental Pengembangan Turbin Hidrokinetik Savonius Berdasarkan Bentuk Profil Distribusi Kecepatan Aliran." RekaRacana: Jurnal Teknil Sipil 7, no. 1 (July 21, 2021): 1. http://dx.doi.org/10.26760/rekaracana.v7i1.215.

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ABSTRAKTurbin Tornado Savonius terinspirasi dari bentuk pola distribusi kecepatan yang kecil pada bagian bawah blade turbin kemudian membesar pada bagian atas blade turbin, yang bertujuan memperbesar area bidang tangkap aliran pada bagian atas turbin. Uji eksperimental dilakukan pada saluran prismatik dan membandingkan kinerja antara turbin hidrokinetik Savonius dan turbin Tornado Savonius. Berdasarkan hasil uji eksperimen, turbin Tornado Savonius memiliki performa optimum pada saat kedalaman air di saluran sama dengan tinggi turbin yang diuji coba. Bentuk blade turbin hidrokinetik Tornado Savonius mampu memperbesar area bidang tangkap aliran yang mengenai turbin, sesuai dengan bentuk distribusi kecepatan aliran untuk kondisi kedalaman yang sama dengan tinggi turbin.Kata kunci: savonius, hidrokinetik, tornado savonius, distribusi kecepatan aliran. ABSTRACKTornado Savonius turbine inspired by velocity distribution pattern shape which small at the bottom and getting bigger the upper part of turbine blade. Such shape aims to enlarge the flow catchment area at the turbine’s upper part. Experimental test performed in prismatic channel by comparing the performance of Savonius hydrokinetic turbine and Tornado Savonius turbine. Based on the result of experimental test, Tornado Savonius turbine has optimum performance at the time of water depth in channel equal to height of the examined turbine. Blade shape of Tornado Savonius hydrokinetic turbine is able to enlarge the flow catchment area in accordance with flow speed distribution shape at the same depth as turbine height.Keywords: savonius, hydrokinetic, tornado savonius, flow velocity distribution.
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Saowalak Thongdee, Churat Tararuk, Natthawud Dussadee, Rameshprabu Ramaraj, and Tanate Chaichana. "Study on performance of a savonius wind turbines related with the blade angle." Maejo International Journal of Energy and Environmental Communication 1, no. 2 (August 9, 2019): 32–36. http://dx.doi.org/10.54279/mijeec.v1i2.244916.

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This research aimed to compare the performance of Savonius vertical axis wind turbines through blade numbers and different blade angles. In this study, applicable turbines having 4, 6, 8, 12, 16 and 18 numbers of blades with the angles of the blades of -15°, -5°, 0°, 5° and 15°, respectively. The rotor used was a semicircle shaped blade made from PVC material and has a blade diameter of 6 cm and 30 cm for both rotor diameter and height. The turbine was tested deadweight range of 0-0.49 kg at 4 m/s wind speed. The results showed that the blade angle has a positive effect on increasing the power and torque coefficient of Savonius wind turbine, specifically on blades less than 16. The highest power and torque coefficient was obtained from the turbine having16 blades at an angle of 5°. This configuration also found that the maximum power and torque coefficient in the tip speed ratio ranging from 0.3-0.4 are 0.2519 and 0.5858, respectively.
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Abdel-Fattah Mahrous. "Computational Fluid Dynamics Study of a Modified Savonius Rotor Blade by Universal Consideration of Blade Shape Factor Concept." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 85, no. 1 (July 29, 2021): 22–39. http://dx.doi.org/10.37934/arfmts.85.1.2239.

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This work aims to investigate computationally the performance of Savonius vertical axis wind turbine having a new design feature for its blade geometry. The proposed design is based on a universal consideration of blade shape factor concept for the Savonius rotor blade. A blade shape factor ranges from zero to infinity, or vice versa, is considered in a single blade of the modified Savonius rotor. This means that each point in the two-dimensional blade profile of the suggested blade design has a single value of blade shape factor that is defined based on the dimensions of conventional semi-circular blade. The computational results of the proposed blade shape design, having blade shape factor varying from infinity to zero, showed an improvement in turbine performance as compared to conventional blade shape design. Moreover, increasing the operating range of Savonius wind turbine is expected.
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Purwoko, Santoso, and Nurchajat. "PENGARUH JUMLAH DAN SUDUT PEMASANGAN SUDU TERHADAP DAYA TURBIN ANGIN SAVONIUS." Jurnal Teknik Ilmu Dan Aplikasi 9, no. 2 (April 28, 2021): 17–21. http://dx.doi.org/10.33795/jtia.v9i2.27.

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The problem in Energy conservation is finding new opportunities for high-efficiency energy generation including wind power generating machines. This study aims to determine the effect of the number and curv angle of blade mounting on the output power of a Savonius type wind turbine. This low speed wind turbine is intended to get energy at the top of a multi-storey building in an urban area. Tests were carried out on a laboratory scale, using savonius wind turbines with a diameter of 400 mm and a height of 500 mm. The driving wind speed of the turbine is set between 1.5 to 8.5 m / s. While the number of blades used is 2 types, namely rotor with three blades and rotor with 4 blades, each of which is tested on 3 different types of curv angle blade. The investigation results are expected to show that the wind tubing from each experiment will give different characteristics. The results showed that there was an increase in efficiency in the savonius turbine with blades. The highest rotation and power occur when the turbine uses 2 blades and -50 curv angle of blade mounting
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Al-Gburi, Kumail Abdulkareem Hadi, Firas Basim Ismail Alnaimi, Balasem Abdulameer Jabbar Al-quraishi, Ee Sann Tan, and Ali Kamil Kareem. "Enhancing Savonius Vertical Axis Wind Turbine Performance: A Comprehensive Approach with Numerical Analysis and Experimental Investigations." Energies 16, no. 10 (May 19, 2023): 4204. http://dx.doi.org/10.3390/en16104204.

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Small-scale vertical-axis wind power generation technologies such as Savonius wind turbines are gaining popularity in suburban and urban settings. Although vertical-axis wind turbines (VAWTs) may not be as efficient as their horizontal-axis counterparts, they often present better opportunities for integration within building structures. The main issue stems from the suboptimal aerodynamic design of Savonius turbine blades, resulting in lower efficiency and power output. To address this, modern turbine designs focus on optimizing various geometric aspects of the turbine to improve aerodynamic performance, efficiency, and overall effectiveness. This study developed a unique optimization method, incorporating a new blade geometry with guide gap flow for Savonius wind turbine blade design. The aerodynamic characteristics of the Savonius wind turbine blade were extensively analyzed using 3D ANSYS CFX software. The optimization process emphasized the power coefficient as the objective function while considering blade profiles, overlap ratio, and blade number as crucial design parameters. This objective was accomplished using the design of experiments (DOE) method with the Minitab statistical software. The research findings revealed that the novel turbine design “OR0.109BS2BN2” outperformed the reference turbine with a 22.8% higher power coefficient. Furthermore, the results indicated a trade-off between the flow (swirling flow) through the gap guide flow and the impact blockage ratio, which resulted from the reduced channel width caused by the extended blade tip length.
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Dissertations / Theses on the topic "SAVONIUS BLADE"

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Chinchore, Asmita C. "Computational Study of Savonius Wind Turbine." Cleveland State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=csu1389795972.

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Sundberg, Johanna, Martina Lundberg, Julia Solhed, and Aikaterini Manousidou. "Two-dimensional Study of Blade Profiles for a Savonius Wind Turbine." Thesis, Uppsala universitet, Elektricitetslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-412795.

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A Savonius wind turbine is a self-starting vertical axis rotor. It can be designed to be compact in size and also produces less noise which makes it suitable to integrate into urban spaces such as rooftops and sign-poles. These characteristics make it interesting from a sustainability point of view, especially when aiming to increase the decentralization of electricity production. This thesis aimed to investigate the aerodynamic performance of different two-bladed Savonius profiles by varying the blade arc angle and the overlap ratio. For evaluation, the dimensionless power coefficient and torque coefficient were investigated over different tip speed ratios. The study was conducted numerically with 2D simulations in Ansys Fluent. The partial differential equations describing the characteristics of the flow, including the flow turbulence effects, were solved with the Reynolds-average Navier Stokes in combination with the k-omega SST model. A validation was performed by comparing data from simulated and experimental tests of a semi-circular profile and a Benesh profile. The investigation of the blade arc angle and overlap ratio was performed on a Modified Bach profile. The profile with a blade arc angle of 130 degrees and an overlap ratio of 0.56 generated a maximal power coefficient of 0.267 at a tip speed ratio of 0.9. This blade configuration generated the best performance of all conducted simulations in this project. However, this project contained uncertainties since simulations can never be an exact description of reality. The project was also limited by the computational power available. Nevertheless, according to the conducted simulations, it was observed that a higher blade arc angle and a larger overlap ratio seem to generate higher efficiency.
En Savonius vindturbin är en självstartande vertikalaxlad rotor som kan utformas i en kompakt design samtidigt som den producerar mindre oljud än horisontalaxlade vindkraftverk. Dagens hållbarhetssträvan i kombination med Savonius turbinens karakteristiska egenskaper gör den till ett potentiellt starkt vertyg för vindenergi. Då den kan placeras på exempelvis hustak eller skyltstolpar, utan att störa närliggande omgivning, finns det många möjliga sätt att implementera och integrera den i samhällets infrastruktur. Målet med detta projekt var att undersöka den aerodynamiska prestationen för Savoniusturbiner med två blad genom att variera bladvinkeln och överlappningsförhållandet. För att jämföra de olika profilerna användes den dimensionslösa effektkoefficienten och momentkoefficienten. Dessa koefficienter beräknades i förhållande till löptalet. Studien utfördes numeriskt med 2D-simuleringar i Ansys Fluent. De partiella differentialekvationerna som beskriver flödets egenskaper, inkluderat turbulenseffekterna, löstes med Reynolds-average Navier Stokes i kombination med k-ω SST modellen. En validering utfördes genom att jämföra data med simulerade och experimentella värden av en Semi-circular profil och en Benesh profil. Studien av bladvinkel och överlappningsförhållandet utgick från en Modified Bach profil. Den mest effektiva profilen hade en bladvinkel av 130 grader och ett överlappsförhållande på 0,56. Den genererade en maximal effektkoefficient av 0,267 vid löptal 0,9. Projektet innehöll en del osäkerheter då simuleringar aldrig kan beskriva verkligheten till fullo. Den tillgängliga beräkningskapaciteten begränsade även projektet ytterligare. Trots vissa begränsningar, visar ändå utförda simuleringar att ökad bladvinkel och ökat överlappningsförhållande genererar högre effekt.

This project was conducted within Stand up for wind and Stand up for energy.

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MALLICK, SIDHANT. "DESIGN AND ANALYSIS OF HYDROKINETIC TURBINE USING SAVONIUS BLADE." Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/15498.

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Hydrokinetic energy is the energy of a water mass due to its flow. The greater the water velocity, the greater is the hydrokinetic energy it posesses. Hydrokinetic turbines are used to covert this kinetic energy to obtain electricity. Since the performance of these turbines played an important role in viability of hydrokinetic power generation projects hence different design parameters are studied to enhance its power generation capacity and performance. In this project torque and rotational speed of simple Savonius turbine are obtained at different speeds. The values of stream velocity are taken as 0.8m/s and 2.0 m/s for 2Dtransient analysis where variation of speed with time is studied. Diameter of the blade is taken as 0.266m and height of the blade is taken as 0.17m. For 3D-steady analysis stream velocities are taken as 0.3m/s, 0.65m/s and 0.9 m/s. The design of turbine blade is done on Solid Works, domain of the blade and meshing is done on ICEM CFD. CFD analysis is done with the help of ANSYS FLUENT. Using transient setup, a plot between time and rpm is plotted.
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Huang, Tien-Yang, and 黃天洋. "The Experimental Study of Power Efficiency of Two-bladed Savonius Wind Rotors in Parallel Matrix System." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/73938809214226416437.

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碩士
國立交通大學
機械工程學系
100
This study establishes a four two-bladed Savonius wind rotors system in parallel matrix which is installed at an open field, to generate electric power. Moreover, It employs a computational fluid dynamics (CFD) software, Fluent, to analyze the flow fields and system performance. It can be separated into two sections: effect of curtain and effect of battery. The experiments detect various wind velocity, wind direction and rotational speed of wind rotors to observe the relationship between tip-speed ratio (TSR) and power coefficient (Cp). Finally, compare and analyze the results between experiment and numerical simulation. For the numerical simulate results, the maximum Cp value of system without curtain is 0.262 at TSR 0.8; the system with curtain is 0.270 at TSR 0.8 which is 1.03 times higher than system without curtain. However, the maximal difference is happened at TSR 0.6 which is 1.16 times higher than system without curtain. From Cp to TSR diagram know that the effect of curtain especially enhance performance at low TSR. On the other hand, the experimental results show that the wind velocity, wind direction and rotational speed of wind rotors have large fluctuation in open field. Therefore, we receive the relationship between Cp and TSR by repeating measuring. Same as the simulation results, curtain indeed improve the performance of system. Otherwise, the experiment of withdrawing battery at second side of circuit shows that battery is no help for progress system performance (Cp) but cause voltage oscillation. Look into the future; improve the power generated efficiency of wind rotor system and connect system to local grid to have more benefit utilize.
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Wang, Pei-Ching, and 王沛晴. "The Study of Identification of Design Factors for Vertical Axis Wind Turbine Blades: Savonius Rotor as Example." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/47790435126680539189.

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碩士
中原大學
工業與系統工程研究所
99
Green energy is an alternative key to fossil fuels and the future life. In oil prices led to rises in the cost of power generation and global environmental degradation, coupled with chemical fuel of human dependence on oil is high, resulting in inadequate development of other energy technologies all the circumstances. The importance of renewable energy gradually, regeneration energy technologies can contribute to clean and secure energy in the human environment. Wind energy becomes a new source of energy because of its clean, inexhaustible, low-cost and other characteristics. Our world is facing environmental changes and growing energy needs, wind energy and wind power technology can help solve these issues. In this study, the case-Savonius wind rotor of the vertical axis small wind turbine will affect the design of parts of the fan capacity wind blades as the main object of study, the extraction of blade design factors research, development can be adapted to their environment and security design of wind turbines. In this study, combining patent analysis and TRIZ theory with the collation of literature Savonius windmill to build a Savonius wind turbine blade design factors table, and draw the Savonius wind rotor blade graphics for assessment of stress. In this study, Autodesk Inventor's 3D parametric design feature to create the model diagram via the Taguchi method of orthogonal array, configured to be 18 Savonius wind rotor blade models, and use the built-in stress analysis of Autodesk Inventor environment to experiment, and get Savonius windmill blades for the deformation under different pressures and stress of the data. We calculate the average SN ratio by the resulting map for each model. The SN cytokine response analysis and variance analysis to identify the design factors of importance, and to complete a continuous Savonius windmill blade design factor extraction process. The conclusion may provide the safety basis and reference in Savonius windmill fields related to technology development and fan design.
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SAMADDER, SOUVIK. "A NUMERICAL STUDY ON COMBINED EFFECT OF DEFLECTOR PLATE, TWIST ANGLE OF BLADES, AND TIP SPEED RATIO ON THE PERFORMANCE OF SAVONIUS HYDROKINETIC TURBINE." Thesis, 2022. http://dspace.dtu.ac.in:8080/jspui/handle/repository/19132.

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Savonius Hydrokinetic Turbine (SHT) is a small-scale renewable energy source that is a sustainable solution for remote areas and rural electrification. The current research work establishes a numerical study on combined effect of deflector plate (no deflector, deflector at 90°, deflector at 45°), twist angle of blades (0°, 12.5°, 25°), and tip speed ratio (0.5 to 1.5) on the turbine efficiency in terms of power coefficient (Cp) using CFD simulation considering a realizable k-ε turbulence model. A total of 99 simulations were performed considering all the above different conditions. To validate the results, simulations were compared with the results of a previous study having no deflector plate. It has been identified that SHT with blade twist angle of 12.5° and deflector plate at 90° produces highest power coefficient as 0.364 at tip speed ratio of 0.9 and 0.5 m/s water velocity. Similarly, SHT having a blade twist angle of 25° with deflector plate at 90° yields the highest torque coefficient as 0.454 at a TSR of 0.5. It was observed that Cp increases by an average 15% for SHT having blade twist and deflector plate as compared to SHT without blade twist and deflector plate.
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Chang, Liang-Ji, and 張良吉. "Numerical Studies of a Savonuis Vertical Axis Wind Turbine with coupled Outer Lift/Inner Drag Blades." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/59216843094039899997.

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碩士
國立屏東科技大學
車輛工程系所
99
The aim of present thesis is to investigate the aerodynamic performance of a novel vertical-axis wind turbine (VAWT) with CFD method. The novel wind turbine blades system is composed of one or two outer rings of NACA blades and inner ring of semi-circular plates. The NACA series blades with high lift/drag ratio were used to generate enough torque force when the wind turbine is started. The inner portion of wind turbine is equipped with three to four pieces of curved plates which was considered to be worked at low wind speed environment. Two profiles of NACA series blades as NACA0018 and NACA4412 were settled on outer rings of turbine blades and their effect on the aerodynamic data were tested. The unsteady flow structure around the wind turbine blades were obtained by solving the Reynolds-averaged Navier-Stokes equations in Fluent software. After testing various scheme to discrete the pressure term in momentum equation, the “Coupled” scheme is selected. The MRF scheme is applied to model the dynamic motion of multi-layers of wind blades. The power coefficient with respect to the tip velocity ratio is provided and discussed. Results indicated that the wind turbine with additioned blade of NACA0018 and NACA4412 can generate 3.4 times of power output as compared with that only equipped of curved-plates in central portion.
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Book chapters on the topic "SAVONIUS BLADE"

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Meri AR, Salih, and Hamidon Bin Salleh. "Numerical Investigation of Savonius Rotor Elliptical and the Design Modification on a Blade Shape." In Advances in Material Sciences and Engineering, 177–85. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-8297-0_20.

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Harun, Darwin, M. Dirhamsyah, Syarizal Fonna, Akhyar, Syifaul Huzni, and Muhammad Tadjuddin. "CFD Investigation on Aerodynamic Characteristics and Performance of Windmill Aerator Type Savonius Four Blade." In Proceedings of the 2nd International Conference on Experimental and Computational Mechanics in Engineering, 367–80. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0736-3_35.

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Rahimi, Ahmad Irham, Dhimas Cahyo Anindito, Dominicus Danardono, and Syamsul Hadi. "The Straight Blade Application to Increasing the Performance of the Savonius Water Turbine (Simulation Study)." In Proceedings of the 6th International Conference and Exhibition on Sustainable Energy and Advanced Materials, 243–56. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4481-1_24.

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Minh, Banh Duc, Le Dinh Anh, Tran Cuong Hung, Doan Viet Ha, Tran Cong Manh Hung, and Nguyen Thi Thu Phuong. "Effect of Main Blade Configuration on the Performance of the Optimized Multicurve Savonius Wind Turbine." In Advances in Engineering Research and Application, 433–38. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-22200-9_48.

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Ramarajan, J., and S. Jayavel. "Modification in the Rotor of Savonius Turbine to Reduce Reverse Force on the Returning Blade." In Proceedings of the 7th International Conference on Advances in Energy Research, 1103–11. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5955-6_105.

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Sundari, Ella, Ozkar F. Homzah, Ahmad Zamheri, Dwi Arnoldi, and Tomy Ronaldo. "Design and Performance of Savonius Vertical Axis Wind Turbine: A Study Experimental of Blade Models." In Atlantis Highlights in Engineering, 211–19. Dordrecht: Atlantis Press International BV, 2023. http://dx.doi.org/10.2991/978-94-6463-118-0_23.

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Sakti, Gunawan, Triyogi Yuwono, and Wawan Aries Widodo. "The Effect of Cylinder Type I-65° Staggered Upstream Convex Blade on the Aerodynamic Performance of the Savonius Turbine." In Proceedings of the International Conference on Advance Transportation, Engineering, and Applied Science (ICATEAS 2022), 223–32. Dordrecht: Atlantis Press International BV, 2023. http://dx.doi.org/10.2991/978-94-6463-092-3_20.

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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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Tantia, Paarth, Pratyush Singh, Punit Prakash, and Nishant Mishra. "Numerical Analysis of Savonius Vertical Axis Wind Turbine with Dimpled Blades." In Lecture Notes in Mechanical Engineering, 209–23. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4018-3_20.

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Ramarajan, J., and S. Jayavel. "Performance Study of Savonius Vertical Axis Wind Turbine with Slotted Blades." In Lecture Notes in Mechanical Engineering, 447–52. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-19-7055-9_75.

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Conference papers on the topic "SAVONIUS BLADE"

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Rashidi, Majid, Jaikrishnan R. Kadambi, and Asmita Chinchore. "Computational Study of Savonius Wind Turbines." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-39595.

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This work presents a computational study of a two-blade and a three-blade Savonius vertical axis wind turbines. The two-blade turbine was considered to be oriented at 0, 45, 90, and 135 degrees in reference to the direction of the prevailing wind. For the three-blade turbine, the orientations taken into account were 0, 30, 60, and 90 degrees in reference to the direction of the prevailing wind. The basic aim of this work was to study how the two designs are different from each other in terms of the forces acting on their blades. The computational simulations considered the turbines to be subjected to constant wind velocities of 5, 10, 20, and 30 m/s. Computational Fluid Dynamics (CFD) analyses were conducted for every case to find out the forces acting on the turbine blades for each orientation. All cases were run using “transition-SST” flow model and the turbine blades were meshed using ‘Quadrilateral Pave’ meshing scheme. Maximum change in pressure on the turbine blade occurs when the two-blade turbine is perpendicular to direction of the prevailing wind, i.e. at 90 degree. On the other hand, when three-blade turbine is at 60 degree orientation, maximum change is pressure occurs on the turbine blade. For the dimensions selected in this study (each blade having a radius of 0.3 m and height of 0.6 m) the maximum net forces on the two-blade turbine was calculated to be 298 N, while this value was 210 N on the three-blade turbine.
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Nugroho, Agung Dwi, Dominicus Danardono Dwi Prija Tjahjana, and Budi Kristiawan. "Slotted blade effect on Savonius wind rotor performance." In THE 5TH INTERNATIONAL CONFERENCE ON INDUSTRIAL, MECHANICAL, ELECTRICAL, AND CHEMICAL ENGINEERING 2019 (ICIMECE 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000891.

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Kumar, Palanisamy Mohan, Srinivas Rao Purimitla, Shitole Shubhra, and Narasimalu Srikanth. "Numerical and analytical study on telescopic savonius turbine blade." In 2017 3rd International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET). IEEE, 2017. http://dx.doi.org/10.1109/pgsret.2017.8251810.

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Banerjee, Abhisek, Sukanta Roy, Prasenjit Mukherjee, and Ujjwal K. Saha. "Unsteady Flow Analysis Around an Elliptic-Bladed Savonius-Style Wind Turbine." In ASME 2014 Gas Turbine India Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gtindia2014-8141.

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Although considerable progress has already been achieved in the design of wind turbines, the available technical designs are not yet adequate to develop a reliable wind energy converter especially meant for small-scale applications. The Savonius-style wind turbine appears to be particularly promising for the small-scale applications because of its design simplicity, good starting ability, insensitivity to wind directions, relatively low operating speed, low cost and easy installation. However, its efficiency is reported to be inferior as compared to other wind turbines. Aiming for that, a number of investigations have been carried out to increase the performance of this turbine with various blade shapes. In the recent past, investigations with different blade geometries show that an elliptic-bladed turbine has the potential to harness wind energy more efficiently. In view of this, the present study attempts to assess the performance of an elliptic-bladed Savonius-style wind turbine using 2D unsteady simulations. The SST k-ω turbulence model is used to simulate the airflow over the turbine blades. The power and torque coefficients are calculated at rotating conditions, and the results obtained are validated with the wind tunnel experimental data. Both the computational and experimental studies indicate a better performance with the elliptical blades. Further, the present analysis also demonstrates improved flow characteristics of the elliptic-bladed turbine over the conventional semi-circular design.
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Filali, Abdelkader, Lyes Khezzar, and Hamza Semmari. "Improved Power for Wind Farm Savonius Rotors: Effect of Blade Shape and Rotors Position." In ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/fedsm2020-20071.

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Abstract In the present study the effect of distance between five vertical Savonius rotors « Gap » on the total performance of the wind farm rotors is investigated. Numerical computations are conducted for a single Savonius turbine, and for the five clustered turbines aligned in perpendicular direction with respect to the upstream wind velocity. The study is carried out using ANSYS FLUENT commercial code and the moving mesh approach for the rotating zones is used. The turbulence model adopted in this work is the k-ω shear stress transport (SST) model. Numerical approach was first validated with previously published experimental and numerical data for a single rotating Savonius rotor case with semi-circular blades. Then, an improvement process based on the modification of the blades profiles to an elliptical shape was adopted. Subsequently, the change in distance between the five vertical Savonius rotors « Gap » has been considered with values of 0.25, 1 and 1.4 times the rotor radius (R). Results show that the Gap = 1R provides the optimum power coefficient for the wind farm rotors. However, the generated wake zone behind the five aligned rotors for this value is more important in particular for the 90 ° angle of the advanced and returned rotor blades. The field efficiency defined by the total power ratio of the five isolated rotors to the total power of the wind farm with five Savonius rotors is around 67%. All these geometrical considerations and propositions made it possible to define an optimal wind farm rotors arrangement.
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Alom, Nur, and Ujjwal K. Saha. "Determining the Optimal Location of Vent Augmenters in an Elliptical-Bladed Savonius Rotor." In ASME 2019 Gas Turbine India Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gtindia2019-2344.

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Abstract The Savonius wind turbine rotor, or simply Savonius rotor is gaining importance throughout the globe as a device to produce electric power without donating much to global warming. Although this type of conventional rotor suffers from lower efficiency, it has many important rewards like simplicity, easier manufacturability, and lower maintenance cost. This has attracted the researcher’s attention towards improving its design further. To improve the Savonius rotor performance, several blade profiles/shapes and augmentation techniques have been evolved. In this study, an effort has been made to investigate the performance of a novel elliptical blade profile by incorporating the vent-augmentation technique. The prime objective is to decrease the negative thrust of the rotor by locating the vents optimally on the blade concave surface. In view of this, the vents are created at three different positions on the blade concave surfaces. Two-dimensional (2D) unsteady simulations are performed around the vented blade profiles of the Savonius rotor using SST k-ω turbulence model by FVM based solver ANSYS Fluent. The torque and power coefficients (CT and CP) are calculated at the revolving environments. The total pressure and velocity contours are obtained and analyzed. For a direct judgement, the results are also generated for the blade profiles without vent-augmenters. The study reveals an enhancement in performance of the vent-augmented elliptical blade profile of the Savonius rotor.
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Khan, Jobaidur R., and Mosfequr Rahman. "Stress Analysis of Various Shaped Blade of Savonius Wind Turbine." In ASME 2014 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/imece2014-36307.

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Amidst of high demand of energy, the world is seeking alternative energy sources. Wind alone can fulfill most of the energy requirement of the world by its efficient conversion into energy. On efficiency measurement, Horizontal Axis Wind Turbines (HAWT) is the popular to the researchers, but it works best in places where the wind is not disturbed and has high wind power. The inherent advantage of facing the wind direction, design simplicity, less expensive technology for construction, lower wind start-up speeds, easier maintenance, and relatively quietness are turning the focus to Vertical Axis Wind Turbine (VAWT). The low wind speed and non-smooth wind flow regions are attracted for these machines. Savonius turbine is the simplest form of VAWT and operation is based on the difference of the drag force on its blades. The main objective of this study is to analyze a perfect mixture of new and innovative designs of Savonius turbine blades, which can make VAWT more attractive, efficient, durable and sustainable. This is studied by using blade with different numbers in operating in different wind speed. A Computational Fluid Dynamics (CFD) analysis has been used. 2D CAD models of various VAWT geometries are created and tested with CFD software ANSYS/FLUENT with a similar flow-driven motion in a wind tunnel. These simulations provided the aero-dynamic characteristics like shear stress, velocity distribution and pressure distribution. Some physical models with desired properties needed to be fabricated and tested inside tunnel to find the effect of different shapes in real.
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Lin, Ching-Huei, and Liubov A. Klimina. "CFD simulation and analysis for Savonius rotors with different blade configuration." In 10TH INTERNATIONAL CONFERENCE ON MATHEMATICAL PROBLEMS IN ENGINEERING, AEROSPACE AND SCIENCES: ICNPAA 2014. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4904626.

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Kianifar, Ali, Morteza Anbarsooz, and Mohammad Javadi. "Blade Curve Influences on Performance of Savonius Rotors: Experimental and Numerical." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30919.

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In this study, the effect of blade curve on the power coefficient of a Savonius rotor is investigated by means of numerical simulation and wind tunnel tests. The tests were conducted on six rotors with identical dimensions but different blade curves, and the influences of blade curve and Reynolds number were studied. Followed by a simulation of the flow field around rotors with identical semi-circular curves and different overlaps, torque was calculated using pressure distribution on the blade surface, and the effect of Reynolds number and blade curve were studied on torque as well. Results indicate that changing the blade curve affects the power coefficient and torque by causing different drag coefficients. Also the rotor that yields the highest power coefficient and torque in one revolution compared with other rotors is highlighted.
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Zewge, Mesfin G., Abdulwehab A. Ibrahim, and Aja Ogboo Chikere. "Numerical modelling of performance on batch blade Savonius turbine using ANSYS." In 2018 Advances in Science and Engineering Technology International Conferences (ASET). IEEE, 2018. http://dx.doi.org/10.1109/icaset.2018.8376803.

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Journal articles
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