Journal of Renewable and Sustainable Energy最新文献

Use of an optical profilometer to measure the aerodynamic shape and the twist of a wind turbine blade 使用光学轮廓仪测量风力涡轮机叶片的气动形状和扭曲度

IF 2.5 4区工程技术

Journal of Renewable and Sustainable Energy Pub Date : 2024-01-01 DOI: 10.1063/5.0176454

E. Torres-Moreno, V. Moreno-Oliva, M. Campos-García, J. R. Dorrego-Portela, Orlando Lastres-Danguillecourt, N. Farrera-Vázquez

{"title":"Use of an optical profilometer to measure the aerodynamic shape and the twist of a wind turbine blade","authors":"E. Torres-Moreno, V. Moreno-Oliva, M. Campos-García, J. R. Dorrego-Portela, Orlando Lastres-Danguillecourt, N. Farrera-Vázquez","doi":"10.1063/5.0176454","DOIUrl":"https://doi.org/10.1063/5.0176454","url":null,"abstract":"This study introduces a metrological approach to measure the aerodynamic shape and the twist of a wind turbine blade. The optical profilometer measurement technique used is laser triangulation. A camera records the image of a line projected onto a section of the blade and, by reconstructing the airfoil shape, the twist angular position of the profile with respect to the axial line of the blade is determined. This methodology is applied to test different sections of a Wortmann FX 63-137 airfoil with a length of 1700 mm. The results of the aerodynamic shape and twist angle are quantitatively verified by comparing them with the ideal or design values. The reconstruction process achieved a resolution of 0.06 mm, and measurement errors in the twist angular position were less than 0.1°. The presented method is efficient, accurate, and low cost to evaluate the blade profiles of low-power wind turbines. However, due to its easy implementation, it is expected to be able to measure any full-scale wind blade profile up to several meters in length.","PeriodicalId":16953,"journal":{"name":"Journal of Renewable and Sustainable Energy","volume":"34 14","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139457599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Two three-dimensional super-Gaussian wake models for hilly terrain 丘陵地形的两种三维超高斯唤醒模型

IF 2.5 4区工程技术

Journal of Renewable and Sustainable Energy Pub Date : 2024-01-01 DOI: 10.1063/5.0174297

Linsheng Dai, Zhumei Luo, Tao Guo, Haocheng Chao, Guanghe Dong, Zhikai Hu

{"title":"Two three-dimensional super-Gaussian wake models for hilly terrain","authors":"Linsheng Dai, Zhumei Luo, Tao Guo, Haocheng Chao, Guanghe Dong, Zhikai Hu","doi":"10.1063/5.0174297","DOIUrl":"https://doi.org/10.1063/5.0174297","url":null,"abstract":"With the increase in wind farms in hilly terrain, it is particularly important to explore the downstream wake expansion of wind turbines in hilly terrains. This study established two complex terrain-applicable super-Gaussian wake models based on the Coanda effect and the wind speed-up phenomenon. Then, by considering the wind shear effect and the law of mass conservation, two three-dimensional (3D) super-Gaussian wake models were obtained. The 3D super-Gaussian models were used to describe the shape of the wake deficit and could reflect the wake changes in the full wake region. The introduction of the Coanda effect could reflect the sinking of the wind turbine wake on the top of a hilly terrain. And considering that the wind speed-up phenomenon could better reflect the incoming velocity distribution of the actual hilly terrain. The validation results demonstrated that the prediction results of the 3D super-Gaussian wake models had negligible relative errors compared to the measured data and could better describe the vertical and horizontal expansion changes of the downstream wake. The models established in this study can assist with the development of complex terrain models and super-Gaussian models, as well as providing guidance for power prediction and wind turbine control strategies in complex terrain.","PeriodicalId":16953,"journal":{"name":"Journal of Renewable and Sustainable Energy","volume":"31 23","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139455595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Evaluation of wind resource uncertainty on energy production estimates for offshore wind farms 风资源不确定性对海上风电场发电量估算的影响评估

IF 2.5 4区工程技术

Journal of Renewable and Sustainable Energy Pub Date : 2024-01-01 DOI: 10.1063/5.0166830

Kerry S. Klemmer, Emily P. Condon, M. Howland

{"title":"Evaluation of wind resource uncertainty on energy production estimates for offshore wind farms","authors":"Kerry S. Klemmer, Emily P. Condon, M. Howland","doi":"10.1063/5.0166830","DOIUrl":"https://doi.org/10.1063/5.0166830","url":null,"abstract":"Wind farm design generally relies on the use of historical data and analytical wake models to predict farm quantities, such as annual energy production (AEP). Uncertainty in input wind data that drive these predictions can translate to significant uncertainty in output quantities. We examine two sources of uncertainty stemming from the level of description of the relevant meteorological variables and the source of the data. The former comes from a standard practice of simplifying the representation of the wind conditions in wake models, such as AEP estimates based on averaged turbulence intensity (TI), as opposed to instantaneous. Uncertainty from the data source arises from practical considerations related to the high cost of in situ measurements, especially for offshore wind farms. Instead, numerical weather prediction (NWP) modeling can be used to characterize the more exact location of the proposed site, with the trade-off of an imperfect model form. In the present work, both sources of input uncertainty are analyzed through a study of the site of the future Vineyard Wind 1 offshore wind farm. This site is analyzed using wind data from LiDAR measurements located 25 km from the farm and NWP data located within the farm. Error and uncertainty from the TI and data sources are quantified through forward analysis using an analytical wake model. We find that the impact of TI error on AEP predictions is negligible, while data source uncertainty results in 0.4%–3.7% uncertainty over feasible candidate hub heights for offshore wind farms, which can exceed interannual variability.","PeriodicalId":16953,"journal":{"name":"Journal of Renewable and Sustainable Energy","volume":"33 28","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139455777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

High areal-capacitance based extremely stable flexible supercapacitors using binder-free exfoliated graphite paper electrode 使用无粘合剂剥离石墨纸电极的基于高等值电容的极其稳定的柔性超级电容器

IF 2.5 4区工程技术

Journal of Renewable and Sustainable Energy Pub Date : 2024-01-01 DOI: 10.1063/5.0184499

Jitendra Kumar Yadav, B. Rani, Ajay Tiwari, Ambesh Dixit

{"title":"High areal-capacitance based extremely stable flexible supercapacitors using binder-free exfoliated graphite paper electrode","authors":"Jitendra Kumar Yadav, B. Rani, Ajay Tiwari, Ambesh Dixit","doi":"10.1063/5.0184499","DOIUrl":"https://doi.org/10.1063/5.0184499","url":null,"abstract":"The highly porous and binder-free flexible paper electrodes can enhance the specific capacitance of symmetric supercapacitors (SCs) due to their large surface and effective ion diffusion pathways. We synthesized the exfoliated graphite (ExG) by the thermal exfoliation method of chemically treated graphite flakes and compressed it into a paper-like thin sheet (binder-free) of ∼0.15 mm thickness. The coin cell SCs with copper (Cu) and stainless steel (SS) as current collectors have been fabricated for the electrochemical measurement. The cyclic voltammetry and galvanostatic charge/discharge measurements are investigated at various scan rates and current densities. The SCs with Cu foil as a current collector perform better than SS-based SCs. The Cu current collector-based SCs showed a specific capacitance of 37.08 mF cm−2, whereas it was ∼29.98 mF cm−2 for SS-based SCs at a 0.01 V s−1 scan rate across a 0–0.6 V potential window. Approximately no degradation in charge storage capacity for more than 15 000 cycles at 0.1 V s−1 shows the ultra-stability of the flexible ExG-based binder-free electrodes. A digital watch is powered using the fabricated pouch cell supercapacitor with copper-based current collectors to show the potential of SCs.","PeriodicalId":16953,"journal":{"name":"Journal of Renewable and Sustainable Energy","volume":"6 2","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139394788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Case study of a bore wind-ramp event from lidar measurements and HRRR simulations over ARM Southern Great Plains 根据激光雷达测量结果和 ARM 大平原南部上空的 HRRR 模拟结果进行的钻孔风急流事件案例研究

IF 2.5 4区工程技术

Journal of Renewable and Sustainable Energy Pub Date : 2024-01-01 DOI: 10.1063/5.0161905

Y. Pichugina, R. Banta, E. J. Strobach, B. J. Carroll, W. A. Brewer, D. D. Turner, V. Wulfmeyer, E. James, T. R. Lee, S. Baidar, J. B. Olson, R. K. Newsom, H.-S. Bauer, R. Rai

{"title":"Case study of a bore wind-ramp event from lidar measurements and HRRR simulations over ARM Southern Great Plains","authors":"Y. Pichugina, R. Banta, E. J. Strobach, B. J. Carroll, W. A. Brewer, D. D. Turner, V. Wulfmeyer, E. James, T. R. Lee, S. Baidar, J. B. Olson, R. K. Newsom, H.-S. Bauer, R. Rai","doi":"10.1063/5.0161905","DOIUrl":"https://doi.org/10.1063/5.0161905","url":null,"abstract":"The rapid change of wind speed and direction on 21 August 2017 is studied using Doppler lidar measurements at five sites of the Atmospheric Radiation Measurement (ARM) Southern Great Plains (SGP) facility in north-central Oklahoma. The Doppler lidar data were investigated along with meteorological variables such as temperature, humidity, and turbulence available from the large suite of instrumentation deployed at the SGP Central Facility (C1) during the Land-Atmosphere Feedback Experiment in August 2017. Lidar measurements at five sites, separated by 55–70 km, allowed us to document the development and evolution of the wind flow over the SGP area, examine synoptic conditions to understand the mechanism that leads to the ramp event, and estimate the ability of the High-Resolution Rapid Refresh model to reproduce this event. The flow feature in question is an atmospheric bore, a small-scale phenomenon that is challenging to represent in models, that was generated by a thunderstorm outflow northwest of the ARM SGP area. The small-scale nature of bores, its impact on power generation, and the modeling challenges associated with representing bores are discussed in this paper. The results also provide information about model errors between sites of different surface and vegetation types.","PeriodicalId":16953,"journal":{"name":"Journal of Renewable and Sustainable Energy","volume":"75 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139395807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Barriers and variable spacing enhance convective cooling and increase power output in solar PV plants 屏障和可变间距可增强太阳能光伏发电厂的对流冷却并提高发电量

IF 2.5 4区工程技术

Journal of Renewable and Sustainable Energy Pub Date : 2024-01-01 DOI: 10.1063/5.0177420

B. Stanislawski, Todd Harman, R. B. Cal, M. Calaf

{"title":"Barriers and variable spacing enhance convective cooling and increase power output in solar PV plants","authors":"B. Stanislawski, Todd Harman, R. B. Cal, M. Calaf","doi":"10.1063/5.0177420","DOIUrl":"https://doi.org/10.1063/5.0177420","url":null,"abstract":"When the temperature of solar photovoltaic (PV) modules rises, efficiency drops and module degradation accelerates. Thus, it is beneficial to reduce module operating temperatures. Previous studies of solar power plants have illustrated that incoming flow characteristics, turbulent mixing, and array geometry can strongly impact convective cooling, as measured by the convective heat transfer coefficient h. In the fields of heat transfer and plant canopy flow, previous work has shown that system-scale arrangement modifications—e.g., variable spacing, barriers, or windbreaks—can passively alter the flow, enhance turbulent mixing, and influence convection. However, researchers have not yet explored how variable spacing or barriers might enhance convective cooling in solar power plants. Here, high-resolution large-eddy simulations model the air flow and heat transfer through solar power plant arrangements modified with missing modules and barrier walls. We then perform a control volume analysis to evaluate the net heat flux and compute h, which quantifies the influence of these spatial modifications on convective cooling and, thus, module temperature and power output. Installing barrier walls yields the greatest improvements, increasing h by 3.4%, reducing module temperature by an estimated 2.5 °C, and boosting power output by an estimated 1.4% on average. These findings indicate that incorporating variable spacing or barrier-type elements into PV plant designs can reduce module temperature and, thus, improve PV performance and service life.","PeriodicalId":16953,"journal":{"name":"Journal of Renewable and Sustainable Energy","volume":"118 26","pages":""},"PeriodicalIF":2.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139454017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Large-eddy simulations of turbulent flows in arrays of helical- and straight-bladed vertical-axis wind turbines 螺旋叶片和直叶片垂直轴风力涡轮机阵列中湍流的大涡流模拟

IF 2.5 4区工程技术

Journal of Renewable and Sustainable Energy Pub Date : 2023-11-01 DOI: 10.1063/5.0172007

Masoumeh Gharaati, Nathaniel J. Wei, J. Dabiri, L. Martínez‐Tossas, Di Yang

{"title":"Large-eddy simulations of turbulent flows in arrays of helical- and straight-bladed vertical-axis wind turbines","authors":"Masoumeh Gharaati, Nathaniel J. Wei, J. Dabiri, L. Martínez‐Tossas, Di Yang","doi":"10.1063/5.0172007","DOIUrl":"https://doi.org/10.1063/5.0172007","url":null,"abstract":"Effects of helical-shaped blades on the flow characteristics and power production of finite-length wind farms composed of vertical-axis wind turbines (VAWTs) are studied numerically using large-eddy simulation (LES). Two helical-bladed VAWTs (with opposite blade twist angles) are studied against one straight-bladed VAWT in different array configurations with coarse, intermediate, and tight spacings. Statistical analysis of the LES data shows that the helical-bladed VAWTs can improve the mean power production in the fully developed region of the array by about 4.94%–7.33% compared with the corresponding straight-bladed VAWT cases. The helical-bladed VAWTs also cover the azimuth angle more smoothly during the rotation, resulting in about 47.6%–60.1% reduction in the temporal fluctuation of the VAWT power output. Using the helical-bladed VAWTs also reduces the fatigue load on the structure by significantly reducing the spanwise bending moment (relative to the bottom base), which may improve the longevity of the VAWT system to reduce the long-term maintenance cost.","PeriodicalId":16953,"journal":{"name":"Journal of Renewable and Sustainable Energy","volume":"52 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139291318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Wind turbine dynamic shading: The effects on combined solar and wind farms 风力涡轮机动态遮阳：对太阳能和风能联合发电场的影响

IF 2.5 4区工程技术

Journal of Renewable and Sustainable Energy Pub Date : 2023-11-01 DOI: 10.1063/5.0176121

Nico J. Dekker, L. Slooff, Mark J. Jansen, Gertjan de Graaff, Jaco Hovius, R. Jonkman, Jesper Zuurbier, Jan Pronk

{"title":"Wind turbine dynamic shading: The effects on combined solar and wind farms","authors":"Nico J. Dekker, L. Slooff, Mark J. Jansen, Gertjan de Graaff, Jaco Hovius, R. Jonkman, Jesper Zuurbier, Jan Pronk","doi":"10.1063/5.0176121","DOIUrl":"https://doi.org/10.1063/5.0176121","url":null,"abstract":"The Dutch climate agreement anticipates the large-scale implementation of solar and wind energy systems on land and water. Combining solar and wind farms has the benefit of multiple surface area use, and it also has the advantage of energy generation from both solar and wind energy systems, which is rather complementary in time; thus, a better balance can be found between electricity generation and demand and the load on the electricity grid. In combined solar and wind farms (CSWFs), the turbines will cast shadows on the solar panels. This concerns the static shadow from the construction tower of the turbine as well as the dynamic shadow caused by the rotating blades. This paper reports on the results of millisecond data monitoring of the PV farm of a CSWF in the Netherlands on land. Static and dynamic shadow effects are discussed, as well as their dependency on farm design. It is observed that the dynamic shade of the wind turbine blade causes serious disturbances of the DC inputs of the inverter, resulting in deviation of the maximum power point tracking monitored. The shadow of the wind turbine results in a total energy loss of about 6% for the given period, park configuration, PV modules, inverter type, and setting.","PeriodicalId":16953,"journal":{"name":"Journal of Renewable and Sustainable Energy","volume":"15 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139303836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Enrichment of fuel properties of biomass using non-oxidative torrefaction for gasification 利用气化过程中的非氧化还原反应丰富生物质燃料特性

IF 2.5 4区工程技术

Journal of Renewable and Sustainable Energy Pub Date : 2023-11-01 DOI: 10.1063/5.0168553

Rabindra Kangsha Banik, Pankaj Kalita

{"title":"Enrichment of fuel properties of biomass using non-oxidative torrefaction for gasification","authors":"Rabindra Kangsha Banik, Pankaj Kalita","doi":"10.1063/5.0168553","DOIUrl":"https://doi.org/10.1063/5.0168553","url":null,"abstract":"The abundance and replenishment nature of solid biomass prompt fuel substitution for gasification and thermal power plants. However, many challenges are encountered while utilizing raw biomass, such as seasonality, strong hydrophilicity, low bulk and energy density, excess oxygen content, less compositional homogeneity, and poor grindability. It is, therefore, indispensable to augment the thermo-chemical properties of the solid biomass by performing suitable pretreatment. Among the various pretreatment techniques, non-oxidative torrefaction effectively upgrades solid biomass to coal-like fuel altering its physico-chemical properties. Therefore, in this work, torrefaction of rice husk and sugarcane bagasse have been performed in a fixed bed reactor by varying temperatures from 210–330 °C and residence time from 30–60 min under a non-oxidative environment. The experimental investigation illustrates a decrease in mass and energy yield of the biomass with a rise in temperature and residence time. Conversely, the higher heating value of rice husk and sugarcane bagasse has improved by 119.4% and 128.9%, respectively. The hydrogen-to-carbon (H/C) and oxygen-to-carbon (O/C) ratio of the torrefied biomass has reduced to enriched fuel variety as indicated by the van Krevelen plot. The decomposition and structural modifications were assessed using Fourier transform infrared spectroscopy, x-ray diffraction, and morphology analysis. Based on the experimental observations, it has been found that torrefaction of rice husk at 290 °C and 30 min and sugarcane bagasse at 270 °C and 30 min would generate enriched syngas using a dual fluidized bed gasification system. Furthermore, water gas shift reactions will be promoted to enhance the percentage of hydrogen in the gas mixture.","PeriodicalId":16953,"journal":{"name":"Journal of Renewable and Sustainable Energy","volume":"25 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139305147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0

Design approach of thrust-matched rotor for basin model tests of floating straight-bladed vertical axis wind turbines 用于浮动直叶垂直轴风力涡轮机海盆模型试验的推力匹配转子设计方法

IF 2.5 4区工程技术

Journal of Renewable and Sustainable Energy Pub Date : 2023-11-01 DOI: 10.1063/5.0176064

Q. Cao, Y. Chen, K. Zhang, X. Zhang, Z. Cheng, B. Wen

{"title":"Design approach of thrust-matched rotor for basin model tests of floating straight-bladed vertical axis wind turbines","authors":"Q. Cao, Y. Chen, K. Zhang, X. Zhang, Z. Cheng, B. Wen","doi":"10.1063/5.0176064","DOIUrl":"https://doi.org/10.1063/5.0176064","url":null,"abstract":"Rotor redesign approaches have been widely proposed to solve the thrust mismatch issue caused by scaling effects for basin model tests of horizontal axis floating wind turbines (FWTs). However, limited basin model tests utilized the thrust-matched rotor (TMR) to accurately evaluate the aerodynamic loads applying to the vertical axis FWTs. This paper described the detailed design approach of the TMR of floating straight-bladed vertical axis wind turbines (VAWTs) with a rated power of 5.3 MW. First, the AG455 airfoil was selected to replace the NACA0018 airfoil. AG455 airfoil can show a larger lift coefficient and a smaller drag coefficient at low Reynolds number. On this basis, the load distribution match algorithm was used to assign the blade pitch angle and chord length at each section of the blade. This method takes the spanwise load and load change rate of model-scaled blade and full-scaled blade as the constraint conditions. By adopting this method, the rotor thrust can be tailored to match the prototype values across a wide range of tip speed ratios. This design approach proves advantageous in assessing the aerodynamic performance of VAWTs under varying inflow wind speeds and unsteady wind conditions. The redesigned TMR model under low Reynolds number can meet Froude similarity criterion, which is helpful to improve the accuracy of vertical axis FWT model tests in the wave basin.","PeriodicalId":16953,"journal":{"name":"Journal of Renewable and Sustainable Energy","volume":"43 1","pages":""},"PeriodicalIF":2.5,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139300103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 0