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Dissertations / Theses on the topic 'Savonious'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

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1

Wong, García Michelle Stefanie. "Diseño de un aerogenerador vertical savonious-curvados para ensayos experimentales con velocidades de 4 m/s a 8 m/s." Bachelor's thesis, Pontificia Universidad Católica del Perú, 2015. http://tesis.pucp.edu.pe/repositorio/handle/123456789/6731.

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La energía eólica en el Perú emplea en un 100% aerogeneradores de eje horizontal para la generación de energía eléctrica. El uso de aerogeneradores de eje vertical no se promueve para la construcción de granjas eólicas debido a la baja eficiencia de sus rotores; sin embargo, su geometría favorece su aplicación para la generación de energía en aplicaciones domésticas. El rotor de eje vertical Savonious fue desarrollado con la finalidad de poder generar electricidad a velocidades tan bajas como 5 m/s. Sin embargo, sus alabes no permiten una sustentación del movimiento del rotor a velocidades ta
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2

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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3

Aouachria, Zéroual. "L'Eolienne Savonius : comportements mécanique et aérodynamique." Aix-Marseille 1, 1987. http://www.theses.fr/1987AIX11062.

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Methode experimentale de mesure des pressions parietales d'un rotor, a axe vertical, de type savonius en rotation. Les resultats obtenus ont ete utilises dans un modele de calcul afin de determiner les parametres mecaniques c::(m)et c::(p) de la machine. Determination des coefficients de trainee et de portance ainsi que du comportement vibratoire du rotor sous l'effet des forces aerodynamiques. Correlation du champ des pressions d'aube avec le systeme des emissions tourbillonnaires engendrees par l'eolienne en rotation. Etude de dispositifs de suspension de type "pilotis" destines a isoler, en
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4

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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5

Aouachria, Zéroual. "Eolienne Savonius comportements mécanique et aérodynamique /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb376022879.

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6

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
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Du, Yingkang. "An Orthogonal Savonius-type Wind Turbine: Design and Experiments." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1459510710.

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8

Mohamed, Mohamed Hassan Ahmed [Verfasser]. "Design optimization of savonius and wells turbines / Mohamed Hassan Ahmed Mohamed." Magdeburg : Universitätsbibliothek Magdeburg, 2011. http://d-nb.info/1011710889/34.

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9

Fernando, Mahamarakkalage Saman Udaya Kumar. "On the performance and wake aerodynamics of the Savonius wind turbine." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/27299.

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The objective of the thesis is to establish methodology for development of a wind turbine, simple in design and easy to maintain, for possible application in developing countries. To that end the Savonius configuration is analyzed in detail both experimentally and analytically to lay a sound foundation for its performance evaluation. Following a brief review of relevant significant contributions in the field (Chapter I), an extensive wind tunnel test-program using scale models is described which assesses the relative influence of system parameters such as blade geometry, gap-size, overlap, as
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10

Akwa, João Vicente. "Análise aerodinâmica de turbinas eólicas Savonius empregando dinâmica dos fluidos computacional." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2010. http://hdl.handle.net/10183/26532.

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Neste trabalho, são apresentados a discussão de conceitos fundamentais, a metodologia e os resultados de simulações numéricas baseadas no Método de Volumes Finitos do escoamento de ar sobre algumas opções de configurações de turbinas eólicas do tipo Savonius, com e sem estatores, em operação e, também, em condições estáticas, como as encontradas nas partidas das mesmas. Comparam-se os resultados para diferentes domínios computacionais, bem como alternativas de discretização espacial e temporal, visando apresentar a influência desses sobre os valores obtidos e estabelecer os parâmetros computac
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11

Chauvin, Alain. "Etude mécanique et aérodynamique d'éoliennes à axe vertical de type Savonius." Aix-Marseille 1, 1987. http://www.theses.fr/1987AIX11089.

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Determination experimentale du coefficient de puissance d'un rotor savonius en fonction de differentes valeurs de l'ecoulement amont. Mesure du champ des pressions statiques d'aube, la maquette etant calee a diverses incidences. Elaboration d'un modele de calcul des performances. Mesure du champ des pressions instantanees d'aubes, maquette en rotation. Determination des coefficients de trainee et de portance ainsi que des efforts au niveau des paliers. Etude des emissions tourbillonnaires engendrees par le rotor savonius. Correlation avec le champ des pressions instantanees d'aube. Isolation e
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12

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 tor
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13

Chauvin, Alain. "Etude mécanique et aérodynamique d'éoliennes à axe vertical de type Savonius." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37603870g.

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14

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
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15

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 th
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16

Benghrib, Driss. "L'Eolienne Savonius mesure de pression en régime dynamique, détermination des paramètres mécaniques /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37611796m.

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17

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
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18

Benghrib, Driss. "L'Eolienne Savonius : mesure de la pression en régime dynamique. Détermination des paramètres mécaniques." Aix-Marseille 1, 1988. http://www.theses.fr/1988AIX11185.

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Mesure des champs de pression sur l'intrados et l'extrados d'une aube d'eolienne savonius a deux regimes d'ecoulement pour diverses valeurs du coefficient de vitesse peripheriques. Determination de l'evolution tourbillonnaire au moyen d'un appareil cinematographique en employant une technique de traitement par arret sur image
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19

Aboujaoude, Hady. "Contribution à l’amélioration des performances aérodynamiques d'une éolienne Savonius à l'aide d'un déflecteur axisymétrique." Electronic Thesis or Diss., Reims, 2024. http://www.theses.fr/2024REIMS018.

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Face aux enjeux environnementaux actuels et à la croissance constante de la demande énergétique, le développement de sources d'énergie renouvelable s'impose comme une priorité. Parmi ces sources, l'énergie éolienne occupe une place de choix. Cependant, l'implantation d'éoliennes en milieu urbain pose des défis spécifiques liés à la nature intermittente et turbulente du vent en ville.C'est dans ce contexte que cette thèse se penche sur l'optimisation des éoliennes Savonius, un type d'éolienne à axe vertical particulièrement adapté aux environnements urbains en raison de sa robustesse et de sa c
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20

Pope, Kevin. "Performance assessment of transient behaviour of small wind turbines." Thesis, UOIT, 2009. http://hdl.handle.net/10155/28.

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Small wind turbine installations have a variety of potential uses, each with unique performance demands and operating conditions. Many applications require that the turbine is placed in wind conditions that are not ideal for optimum operation. Better predictive techniques can improve wind turbine performance through improved control strategies and enhanced designs. Conventional methods of wind power design and control utilize an average power coefficient. In this thesis, various techniques to predict the transient power coefficient of a wind turbine are developed. The operation of a Savonius w
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21

Guignard, Nathan. "CFD analysis of performance and downstream vortices on a savonius typer vertical axis wind turbine." Master's thesis, Pontificia Universidad Católica del Perú, 2015. http://tesis.pucp.edu.pe/repositorio/handle/123456789/6686.

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Since the turn of the century, the talk about the limited reserve of fossil fuels and the effects of their burning on our climate has become a major topic of the media. The evidence is staggering and as a consequence most of our world’s countries have started an energy transition. The main goal is to get away from fossil fuels and use “renewable energies”, so called because the resources are constantly renewed and compared to fossil fuels seem infinite. Energies such as solar, wind, biomass and geothermal are examples of such sources of renewables. Denmark is the current leader in wind generat
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22

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
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23

Kothe, Leonardo Brito. "Estudo comparativo experimental e numérico sobre o desempenho de turbinas savonius helicoidal e de duplo-estágio." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/141901.

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O presente trabalho apresenta um estudo numérico e experimental sobre o desempenho aerodinâmico de turbinas eólicas de eixo vertical envolvendo rotores Savonius convencional de duplo-estágio e helicoidal. O estudo experimental é realizado no Túnel Aerodinâmico Professor Debi Pada Sadhu, do Laboratório de Mecânica dos Fluidos da UFRGS. As simulações numéricas são realizadas com o software Fluent/ANSYS utilizando o Método dos Volumes Finitos. São comparados os coeficientes de torque estático e dinâmico, o coeficiente de potência, além de uma análise aerodinâmica das duas turbinas. As medições sã
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24

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 functio
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25

Tacconelli, Loris. "Progetto preliminare di turbina eolica per paesi emergenti." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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Lo scopo di questo elaborato è studiare, a livello preliminare, possibili macchine per fornire energia elettrica nel modo più economico ed ecologico possibile; in particolare viene proposto il progetto preliminare di una turbina eolica per Paesi emergenti. Dopo un'introduzione all'argomento, analizzando la situazione energetica a livello globale, per poi scendere più nello specifico analizzando i vari modelli esistenti di turbine eoliche, sono descritte le leggi fisiche e le equazioni che sono alla base del loro funzionamento, come l'equazione di Bernoulli e la legge di Betz. Nel capitolo p
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26

Kirke, Brian Kinloch, and n/a. "Evaluation of Self-Starting Vertical Axis Wind Turbines for Stand-Alone Applications." Griffith University. School of Engineering, 1998. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20050916.120408.

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There is an urgent need for economical, clean, sustainable energy supplies, not only in densely populated areas where electricity grids are appropriate, but also in rural areas where stand-alone power supply systems are often more suitable. Although electrical power supply is very versatile and convenient, it introduces unnecessary complexity for some off-grid applications where direct mechanical shaft power can conveniently be provided by a wind turbine. Wind energy is one of the more promising renewable energy sources. Most wind turbines are of the horizontal axis type, but vertical axis win
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27

Kirke, Brian. "Evaluation of Self-Starting Vertical Axis Wind Turbines for Stand-Alone Applications." Thesis, Griffith University, 1998. http://hdl.handle.net/10072/366205.

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There is an urgent need for economical, clean, sustainable energy supplies, not only in densely populated areas where electricity grids are appropriate, but also in rural areas where stand-alone power supply systems are often more suitable. Although electrical power supply is very versatile and convenient, it introduces unnecessary complexity for some off-grid applications where direct mechanical shaft power can conveniently be provided by a wind turbine. Wind energy is one of the more promising renewable energy sources. Most wind turbines are of the horizontal axis type, but vertical axis win
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28

Vitali, Daniele. "Progetto, simulazione e sperimentazione di sistemi energetici ibridi di tipo eolico-fotovoltaico." Doctoral thesis, Università Politecnica delle Marche, 2013. http://hdl.handle.net/11566/242699.

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vicino alla domanda, al fine di fornire elettricità in zone remote in particolare. Inoltre essa è predisposta all’inclusione di fonti di energia rinnovabile, come l’eolico e il solare, che permettono sostenibilità ambientale. La loro natura discontinua può essere compensata parzialmente tramite sistemi ibridi di tipo eolico-fotovoltaico. Una tipologia promettente nel micro-eolico è rappresentata dalla turbina Savonius ad asse verticale (VAWT). Una unità di micro-generazione ibrida con VAWT è stata progettata per essere integrata in un sistema di illuminazione stradale a LED innovativo.
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29

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 realiz
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30

Doerffer, Krzysztof. "Badania i rozwój prototypów innowacyjnej elektrowni wiatrowej." Rozprawa doktorska, Uniwersytet Technologiczno-Przyrodniczy w Bydgoszczy, 2019. http://dlibra.utp.edu.pl/Content/1912.

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Praca doktorska podejmuje problematykę badania innowacyjnej elektrowni wiatrowej stworzonej do pracy w instalacjach przydomowych o małej mocy<br>This PhD thesis undertakes an issue of the innovative wind mill dedicated to small power plant installation for individual household use
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31

Zetterkvist, Victor. "Analys av egenfrekvenser och laster för en vertikalaxlad, skruvad Savoniusturbin : slutsatser om möjliga materialval och geometrierför att undvika resonans." Thesis, Uppsala universitet, Industriell teknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-326356.

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At the Division of Electricity at Uppsala university a project isconducted to develop a smaller wind turbine for conditions in theAntarctica. This is a part of a larger, international researchproject in the field of particle physics known as the Ariannaexperiment. The project consists of developing and installing avertical axle wind turbine of screwed Savonius type. A prototypeof this has been manufactured and installed 2016 in Antarctica forinitial testing and measurement.Wind turbines are subjected to complex and varied loads from windand rotation which gives rise to cyclical strain. The rot
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32

Hampl, Petr. "Design pouliční svítilny s nezávislým napájením." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228418.

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Oblast problémů, ze kterých konkrétní téma projektu vychází, zahrnuje současnou globální transformaci zdrojů energie a jejich dodávek se zvláštní pozorností na obnovitelné zdroje energie. Důraz je kladen zejména na hodnoty jež přináší produkt určený k užívání ve veřejných prostorách. Autorovým zadáním bylo navrhnout osvětlovací jednotku nezávislou na vnějším zdroji napájení. Cílem návrhu je přehodnotit způsob, jakým jsou dnes technologie využívání sluneční a větrné energie běžně používány, a navrhnout řešení přinášející nové vlastnosti a užitné hodnoty pro přímého uživatele i celou společnost.
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33

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 e
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34

Jaohindy, Placide. "Modélisation des systèmes éoliens verticaux intégrés aux bâtiments : modélisation du couple production / Bâtiment." Thesis, La Réunion, 2012. http://www.theses.fr/2012LARE0005/document.

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La technique d'intégration des systèmes éoliens verticaux (VAWT) au service des logements individuels, collectifs et tertiaires est une approche intéressante pour les acteurs de la maitrise d'énergie pour promouvoir une utilisation rationnelle de l'énergie. Le choix de l'implantation d'une éolienne en milieu urbain est déterminé par la hauteur des bâtiments, la vitesse du vent et l'intensité de turbulence du site. Les conditions de vents sévères à faible altitude sont favorables à une implantation de VAWT. Dans certaines villes, la hauteur moyenne des bâtiments est relativement faible et ceci
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35

Ersson, David, and Robert Yngvesson. "Permakultur i Byggandet : En utredning inför uppförande av en miljöanpassad utbyggnad av skola i Ljusdal." Thesis, Högskolan i Gävle, Avdelningen för bygg- energi- och miljöteknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-9394.

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Beräkningar visar att det med nuvarande befolkning och en västerländsk levnadsstandard behövs upp till sju jordklot för vår försörjning. Tillsammans förbrukar USA och Europa 2/3 av jordens resurser varav flera därtill redan är överutnyttjade. Jordens nuvarande befolkning förbrukar i dagsläget 120 % mer av jordens resurser än vad som är hållbart. Med den västerländska människans nuvarande genomsnittliga livsstil förmår jorden bara försörja en miljard innevånare på ett hållbart sätt. Ofta är energieffektiviseringar och energibesparingar de lösningar som föreslås för att lösa de problem som det m
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36

Ross, Ian Jonathan. "Wind Tunnel Blockage Corrections: An Application to Vertical-Axis Wind Turbines." University of Dayton / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1271306622.

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37

Previtero, Chiara. "Computational fluid dynamics analysis and experimental tests of a small vertical axis wind turbine: choice of design." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18259/.

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Il crescente fabbisogno energetico e la necessità di ridurre l'inquinamento atmosferico stanno spingendo la ricerca verso soluzioni alternative di produzione di energia. Una di queste potrebbe essere l'inserimento di turbine eoliche ad asse verticale (VAWT), come quella Savonius, nella generazione distribuita. La Savonius ha un design semplice e può generare potenza anche a basse velocità del vento quindi, con l'obiettivo di aumentarne il coefficiente di potenza, sono state studiate delle pale con una forma alternativa a quella tradizionale semicilindrica. Una volta selezionato il design con l
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38

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 da
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Méndez, Margio González. "Simulations numériques de la transition de la couche limite sur une surface concave : application à la conception des éoliennes à axe vertical de type Savonius Heat-transfer analysis of a transitional boundary layer over a concave surface with Görtler vortices by means of direct numerical simulations Boundary layer transition over a concave surface caused by centrifugal instabilities." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMIR05.

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Des simulations numériques directes (DNS) sont calculées afin d’étudier le processus complet de transition laminaire-turbulent d’une couche limite qui se développe sur une surface concave. On constate que l’écoulement traversant une telle géométrie est susceptible de développer des instabilités centrifuges sous forme de tourbillons de Görtler. La transition est déclenchée au moyen d’éléments de rugosité de paroi qui sont également utilisés pour prédéfinir la longueur d’onde transversale des tourbillons de Görtler. Les différentes régions rencontrées dans le processus de transition, c’est-à-dire
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Kihlberg, Kristofer. "Integrering av Savonius-vindturbiner och solpaneler." Thesis, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-360284.

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This thesis considers the integration between Savonius wind turbines and photovoltaics to form a hybrid power system. Different integration techniques were studied to find the most suited technique and the necessary components. The hybrid system was then to be compared with a solar panel system of equal sizing to investigate whether it could compete in terms of production and profitability. A model of the hybrid systems was built in MATLAB Simulink to simulate the production of the systems. Simulations used SMHI measurement data over wind speeds, solar radiation and temperature, with data reso
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Cheng, Kuan-Chun, and 鄭冠群. "The performance test of Improved Savonius wind-driven generator." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/32466685476069553395.

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碩士<br>聖約翰科技大學<br>自動化及機電整合研究所<br>101<br>In recent years, consciousness of green energy has become practical. To promote the usage of green energy, researchers have been engaging themselves in the introduction of it. Among these, the wind generator is the most suitable equipment in the context of windy Taiwan. However, the wind fields of Taiwan allow small-scale wind generator, which is less expensive and accommodating to ordinary families. The small-scale vertical wind generator is produced in line with the government's green energy policy, and it becomes popular in families. This thesis aims t
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42

Yang, Cheng-Hsun, and 楊承勳. "Numerical Simulation Analysis on Optimized Structure of Savonius Rotor." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/39468230888415566643.

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碩士<br>健行科技大學<br>電機工程系碩士班<br>102<br>Savonius rotor is seldom applied in wind power generation system due to its lower output power. But the rotor with simple structure and low manufacturing cost is still worth to be studied more. Method of computational fluid dynamics simulation is applied to investigate the optimum output power, torque and power coefficient ( ) for three different configuration of Savonius rotors with the same cross section area and upstream wind speed. The tall and thin wind turbine is found to have the maximum output power and . The short and wide wind turbine has the maxim
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43

YANG, CHIH-HUANG, and 楊志煌. "Design and Numerical Analysis of Small Helical Savonius Rotors." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/23844887332612484747.

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碩士<br>建國科技大學<br>機械工程系暨製造科技研究所<br>99<br>The air pressure difference between upper and bottom of the rotors is the thrust for the rotation of traditional vertical axis Savonius-type wind turbine. The starting torque for Savonius-type wind turbine is large. However, the negative torque value can occur during the rotating process, reducing the efficiency of wind energy utilization. In this study, the rapid prototyping technology (RP) is used to produce small type Savonius helical rotor. The experimental and simulation methods are performed to explore the aerodynamic and the torque characteristics
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44

Li, Xin-Cong, and 李欣聰. "Study of Savonius Impellers Weight and Overlap Ratio Design." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/x2p99q.

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碩士<br>聖約翰科技大學<br>自動化及機電整合研究所<br>101<br>Fewer and fewer fossil fuels on the planet, and now wind power has become one of alternative energy sources, the horizontal axis wind turbine noise problem exists, and the city wind speed between 4 ~ 12m / s, thus more suitable for urban households vertical axis small wind the motor. This study was to explore the different wind speeds, Savonius blade weight and blade overlap ratio than its mechanical energy and electrical energy conversion efficiency of the effect. This study of aluminum alloy materials, design of the overlap ratio of 0.15 S-shaped blade
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45

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
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Chang, Chih-Hsiang, and 張至翔. "The improvement and simulation of a variable Savonius wind turbine." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/18783398690176969091.

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碩士<br>國立交通大學<br>工學院碩士在職專班精密與自動化工程組<br>99<br>The purpose of this thesis is to build a variable Savonius wind turbine model and perform the motion simulation and design. In motion simulation part, we used UG NX to model a Savonius wind turbin with variable blade and exported this model into ADAMS. And ADAMS can generate a graphics output file which may be to view an animation of the motion simulation. The analysis results compared with wind tunnel experiment ,and ADAMS are obtained good agreements in this case. The experimental method was developed to measures the reaction torque and rpm var
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Shen, Di-Yuan, and 沈狄原. "Numerical Simulation Analysis on Overlap Ratio of Savonius Wind Turbine." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/02433377988052503570.

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碩士<br>清雲科技大學<br>電機工程所<br>99<br>Savonius rotors were doubted to be an efficient machine to produce electricity due to its lower power efficiency. But Savonius rotors are known to have many advantages like simple structure and low cost for manufacture. With the new development of low angular speed electricity generators, more and more researches are in progress to promote the efficiency of Savonius rotors. Computational fluid dynamics (CFD) method is applied in this paper to simulate and compare the torques on different blade structures and their related equilibrium angular speeds of Savonius ro
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Andersson, Oskar. "Savonius wind turbine innovation integrated in a constructed nano grid system." Thesis, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-387540.

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A nanogrid system for supplying neutrino detectors on Antarctica with electricity is designed and built. The nanogrid system could later on be implemented in various configurations where suppling electricity to neutrino detectors is one area of use. The energy system that is acting on site in Antarctica is based around solar panels to provide power to the measuring equipment. However, providing electricity in such a way is not optimal due to its failure in delivering electricity at times. A nanogrid that can stand the demands of constant energy supply to the measurement station are therefore c
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Cheong, Ee-Jaz, and 莊宇爵. "Wind Tunnel and Numerical Study of Conventional and Modified Savonius Wind Turbines." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/e2297a.

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Yang, Chen Kuang, and 楊宸光. "Design and Analysis of Hybrid H-Variable Savonius Vertical Axis Wind Turbine." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/t3aa4q.

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碩士<br>長庚大學<br>機械工程學系<br>105<br>Since the variation of wind direction does not affect the performance of vertical-axis wind turbines (VAWT), they are suitable for installing in metropolitan area where the wind direction varies constantly due to the vortexes induced by high rise buildings. Among all VAWTs, the power coefficient, CP, of H-rotors can be as high as 0.45, which is even higher than that of some small horizontal axis wind turbines. However, a dead band of negative CP in the lower range of the tip speed ratio (TSR) of the H-rotors prevents them from self starting and consequently reach
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