Towards smart blades for vertical axis wind turbines: different airfoil shapes and tip speed ratios

IF 3.6 Q3 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY Wind Energy Science Pub Date : 2023-09-12 DOI:10.5194/wes-8-1403-2023
Mohammad Rasoul Tirandaz, Abdolrahim Rezaeiha, Daniel Micallef
{"title":"Towards smart blades for vertical axis wind turbines: different airfoil shapes and tip speed ratios","authors":"Mohammad Rasoul Tirandaz, Abdolrahim Rezaeiha, Daniel Micallef","doi":"10.5194/wes-8-1403-2023","DOIUrl":null,"url":null,"abstract":"Abstract. Future wind turbines will benefit from state-of-the-art technologies that allow them to not only operate efficiently in any environmental condition but also maximise the power output and cut the cost of energy production. Smart technology, based on morphing blades, is one of the promising tools that could make this possible. The present study serves as a first step towards designing morphing blades as functions of azimuthal angle and tip speed ratio for vertical axis wind turbines. The focus of this work is on individual and combined quasi-static analysis of three airfoil shape-defining parameters, namely the maximum thickness t/c and its chordwise position xt/c as well as the leading-edge radius index I. A total of 126 airfoils are generated for a single-blade H-type Darrieus turbine with a fixed blade and spoke connection point at c/2. The analysis is based on 630 high-fidelity transient 2D computational fluid dynamics (CFD) simulations previously validated with experiments. The results show that with increasing tip speed ratio the optimal maximum thickness decreases from 24 %c (percent of the airfoil chord length in metres) to 10 %c, its chordwise position shifts from 35 %c to 22.5 %c, while the corresponding leading-edge radius index remains at 4.5. The results show an average relative improvement of 0.46 and an average increase of nearly 0.06 in CP for all the values of tip speed ratio.","PeriodicalId":46540,"journal":{"name":"Wind Energy Science","volume":"2014 1","pages":"0"},"PeriodicalIF":3.6000,"publicationDate":"2023-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Wind Energy Science","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5194/wes-8-1403-2023","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Abstract. Future wind turbines will benefit from state-of-the-art technologies that allow them to not only operate efficiently in any environmental condition but also maximise the power output and cut the cost of energy production. Smart technology, based on morphing blades, is one of the promising tools that could make this possible. The present study serves as a first step towards designing morphing blades as functions of azimuthal angle and tip speed ratio for vertical axis wind turbines. The focus of this work is on individual and combined quasi-static analysis of three airfoil shape-defining parameters, namely the maximum thickness t/c and its chordwise position xt/c as well as the leading-edge radius index I. A total of 126 airfoils are generated for a single-blade H-type Darrieus turbine with a fixed blade and spoke connection point at c/2. The analysis is based on 630 high-fidelity transient 2D computational fluid dynamics (CFD) simulations previously validated with experiments. The results show that with increasing tip speed ratio the optimal maximum thickness decreases from 24 %c (percent of the airfoil chord length in metres) to 10 %c, its chordwise position shifts from 35 %c to 22.5 %c, while the corresponding leading-edge radius index remains at 4.5. The results show an average relative improvement of 0.46 and an average increase of nearly 0.06 in CP for all the values of tip speed ratio.
查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
朝着智能叶片垂直轴风力涡轮机:不同的翼型形状和尖端速度比
摘要未来的风力涡轮机将受益于最先进的技术,这些技术不仅使它们能够在任何环境条件下高效运行,而且还能最大限度地提高功率输出并降低能源生产成本。基于变形叶片的智能技术是实现这一目标的有前途的工具之一。本文的研究为垂直轴风力机的变形叶片方位角和叶尖速比函数的设计迈出了第一步。这项工作的重点是对三个翼型形状定义参数的单独和组合准静态分析,即最大厚度t/c及其弦向位置xt/c以及前缘半径指数i。在c/2处具有固定叶片和辐条连接点的单叶片h型达里欧斯涡轮共产生126个翼型。该分析基于630个高保真瞬态二维计算流体动力学(CFD)模拟,之前已通过实验验证。结果表明,随着叶尖速比的增加,最佳最大厚度从24% c(占翼型弦长米数的百分比)减小到10% c,弦向位置从35% c移动到22.5% c,而相应的前缘半径指数保持在4.5。结果表明,各叶尖速比值的CP值平均提高了0.46,平均提高了近0.06。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
Wind Energy Science
Wind Energy Science GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY-
CiteScore
6.90
自引率
27.50%
发文量
115
审稿时长
28 weeks
期刊最新文献
A digital twin solution for floating offshore wind turbines validated using a full-scale prototype Free-vortex models for wind turbine wakes under yaw misalignment – a validation study on far-wake effects Feedforward pitch control for a 15 MW wind turbine using a spinner-mounted single-beam lidar A new methodology for upscaling semi-submersible platforms for floating offshore wind turbines An analytical linear two-dimensional actuator disc model and comparisons with computational fluid dynamics (CFD) simulations
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1