Wind Energy最新文献_第10页

Lightning attachment characteristic of wind turbine generator: Experimental investigation and prediction method based on simulations 风力发电机组雷电附着特性:实验研究与仿真预测方法

IF 4.1 3区工程技术

Wind Energy Pub Date : 2022-11-06 DOI: 10.1002/we.2790

Mi Zhou, Jingkang Huang, Jiaer Chen, Weihan Zhao, Chang He, L. Cai, Jianguo Wang

引用次数: 2

Comparison of aerodynamic models for horizontal axis wind turbine blades accounting for curved tip shapes 考虑弯曲叶尖形状的水平轴风力涡轮机叶片空气动力学模型的比较

IF 4.1 3区工程技术

Wind Energy Pub Date : 2022-10-25 DOI: 10.1002/we.2780

S. G. Horcas, N. Ramos‐García, A. Li, G. Pirrung, T. Barlas

{"title":"Comparison of aerodynamic models for horizontal axis wind turbine blades accounting for curved tip shapes","authors":"S. G. Horcas, N. Ramos‐García, A. Li, G. Pirrung, T. Barlas","doi":"10.1002/we.2780","DOIUrl":"https://doi.org/10.1002/we.2780","url":null,"abstract":"Curved tip extensions are among the rotor innovation concepts that can contribute to the higher performance and lower cost of horizontal axis wind turbines. One of the key drivers to exploit their advantages is the use of accurate and efficient computational aerodynamic models during the design stage. The present work gives an overview of the performance of different state-of-the-art models. The following tools were employed, in descending order of complexity: (i) a blade-resolved Navier Stokes solver, (ii) a lifting line model, (iii) a vortex-based method coupling a near-wake model with a far-wake model, and (iv) two implementations of the widely used blade element momentum method (BEM), with and without radial induction. The predictions of the codes were compared when simulating the baseline geometry of a reference wind turbine and different tip extension designs with relatively large sweep angle and/or dihedral angle. Four load cases were selected for this comparison, to cover several aspects of the aerodynamic modeling: steady power curve, pitch step, extreme operating gust impact, and standstill in deep stall. The present study highlighted the limitations of the BEM-based formulations to capture the trends attributed to the introduction of curvature at the tip. This was true even when using the radial induction submodel. The rest of the computational methods showed relatively good agreement in most of the studied load cases. An exception to this was the standstill configuration, as the blade-resolved Navier-Stokes solver was the only code able to capture the highly unsteady effects of deep stall.","PeriodicalId":23689,"journal":{"name":"Wind Energy","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2022-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43341529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Estimation of power performances and flow characteristics for a Savonius rotor by vortex particle method 涡粒法估计萨沃纽斯转子的动力性能和流动特性

IF 4.1 3区工程技术

Wind Energy Pub Date : 2022-10-21 DOI: 10.1002/we.2788

Jingna Pan, C. Ferreira, A. V. van Zuijlen

引用次数: 1

Identifying the flap side‐edge noise contribution of a wind turbine blade section with an adaptive trailing edge 识别具有自适应后缘的风力涡轮机叶片截面的襟翼侧边噪声贡献

IF 4.1 3区工程技术

Wind Energy Pub Date : 2022-10-18 DOI: 10.1002/we.2786

A. Suryadi, C. Jätz, J. Seume, M. Herr

{"title":"Identifying the flap side‐edge noise contribution of a wind turbine blade section with an adaptive trailing edge","authors":"A. Suryadi, C. Jätz, J. Seume, M. Herr","doi":"10.1002/we.2786","DOIUrl":"https://doi.org/10.1002/we.2786","url":null,"abstract":"Summary Active trailing-edge technology is a promising application for localized load alleviation of large-diameter wind turbine rotors, accomplished using one or more control surfaces in the rotor blade’s outer region. This work focuses on identifying noise contributions from the ﬂap side-edge and the trailing edge in a laboratory condition. Measurements were conducted in the Acoustic Wind tunnel Braunschweig (AWB) at the German Aerospace Center’s (DLR) Braunschweig site. The small-scale model has a span of 1200 mm and a chord of 300 mm. The control surface, a plain ﬂap, has a span of 400 mm and a chord length of 90 mm. Far-ﬁeld noise was measured using a phased-microphone array for various ﬂow speeds, angles of attack and ﬂap deﬂection angles. For sound source identiﬁcation, two noise reduction addons were installed interchangeably: trailing-edge brush and ﬂap side-edge porous foam. Analysis of the far-ﬁeld noise reveals that, while changes to the ﬂap deﬂection angle alter the far-ﬁeld noise spectra, the trailing-edge noise remains the predominant noise source at deﬂection angles − 5 ◦ and 5 ◦ . No additional noise level was observed from the ﬂap side-edge within the measurable frequency range at these angles. The ﬂap side-edge noise has an increased role for frequency larger than 2 kHz for the larger ﬂap deﬂection angles of − 10 ◦ and 10 ◦ . Furthermore, numerical reproduction of the results will also be presented using the FMCAS (Fast Multipole Code for Acoustic Shielding) toolchain developed at DLR.","PeriodicalId":23689,"journal":{"name":"Wind Energy","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2022-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47047586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Design space exploration and decision‐making for a segmented ultralight morphing 50‐MW wind turbine 50 - MW分段超轻变形风力涡轮机的设计空间探索与决策

IF 4.1 3区工程技术

Wind Energy Pub Date : 2022-09-27 DOI: 10.1002/we.2781

Sepideh Kianbakht, Dana P. Martin, K. Johnson, D. Zalkind, Lucy Pao, E. Loth, Juliet G. Simpson, Shulong Yao, M. Chetan, D. Griffith

引用次数: 3

A time‐varying formulation of the curled wake model within the FAST.Farm framework FAST.Farm框架内卷曲尾流模型的时变公式

IF 4.1 3区工程技术

Wind Energy Pub Date : 2022-09-24 DOI: 10.1002/we.2785

E. Branlard, L. Martínez‐Tossas, J. Jonkman

引用次数: 2

Evaluation of orography and roughness model inputs and deep neural network regression for wind speed predictions 地形和粗糙度模型输入的评估和风速预测的深度神经网络回归

IF 4.1 3区工程技术

Wind Energy Pub Date : 2022-09-22 DOI: 10.1002/we.2782

Markus Gross, V. Magar, A. Peña

引用次数: 1

Noise simulations of flap devices for wind turbine rotors 风力发电机转子襟翼装置噪声仿真

IF 4.1 3区工程技术

Wind Energy Pub Date : 2022-09-22 DOI: 10.1002/we.2784

A. Suryadi, F. Schmidt, C. Appel, N. Reiche, R. Ewert, M. Herr, J. Wild

{"title":"Noise simulations of flap devices for wind turbine rotors","authors":"A. Suryadi, F. Schmidt, C. Appel, N. Reiche, R. Ewert, M. Herr, J. Wild","doi":"10.1002/we.2784","DOIUrl":"https://doi.org/10.1002/we.2784","url":null,"abstract":"The rotor of a large diameter wind turbine experiences more substantial and more dynamic loads due to the fluctuating and heterogeneous wind field. The project SmartBlades 2.0 investigated rotor blade design concepts that alleviate aerodynamic loading using active and passive mechanisms. The present work evaluates the acoustics of the two load alleviating concepts separately, an inboard slat and an outboard flap, using the Fast Random Particle Mesh/Fast Multipole Code for Acoustic Shielding (FRPM/FMCAS) numerical prediction toolchain developed at DLR with input from the averaged flow field from RANS. The numerical tools produce a comparable flap side-edge noise spectrum with that of the measurement conducted in the Acoustic Wind Tunnel Braunschweig (AWB). The validated FRPM/FMCAS was then used to analyze the self-noise from a slat at the inboard section of a rotor blade with a 44.45 m radius and compared with that from the outboard trailing edge. Furthermore, the rotational effect of the rotor was included in the post-processing to emulate the noise observed at ground level. The findings show an increase in the slat's overall sound pressure level and a maximum radiation upwind of the wind turbine for the case with the largest wind speed that represents the off-design condition. In operational conditions, the slat adds at most 2 dB to the overall sound pressure level. The toolchain evaluates wind turbine noise with conventional or unconventional blade design, and the problem can be scaled up for a full-scale analysis. As such, the tools presented can be used to design low-noise wind turbines efficiently.","PeriodicalId":23689,"journal":{"name":"Wind Energy","volume":null,"pages":null},"PeriodicalIF":4.1,"publicationDate":"2022-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42314317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

An assessment of observed wind speed and wind power density over China for 1980–2021 中国1980-2021年观测风速和风功率密度的评估

IF 4.1 3区工程技术

Wind Energy Pub Date : 2022-09-18 DOI: 10.1002/we.2783

Muyuan Li, Yanbo Shen, Jinfeng Yao, Dong Ye, Jing Fan, I. Simmonds

引用次数: 4

Experimental and numerical investigation of the yaw moment of a downwind coned wind turbine rotor 顺风锥型风力机转子偏航力矩的实验与数值研究

IF 4.1 3区工程技术

Wind Energy Pub Date : 2022-09-07 DOI: 10.1002/we.2779

C. Schulz, Ke-qi Wang, K. Wieczorek, S. Netzband, M. Abdel‐Maksoud

引用次数: 1