Research status on aero-acoustic noise from wind turbine blades

Yang, Bowen

doi:10.1088/1757-899x/52/1/012009

Cited by 5 publications

(4 citation statements)

References 38 publications

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“…Kontribusi terbesar terkait dengan turbulensi atmosfer yang memukul bilah (inflow turbulence sound) dan udara mengalir di permukaan blade (trailing edge sound) [11]. Reduksi kebisingan dapat dilakukan dengan desain sudu yang tepat [12] dimana riset aerodinamika turbin angin telah memberikan kontribusi signifikan terhadap keberhasilan energi angin modern [6]. Perhatian khusus banyak diberikan untuk pemodelan aerodinamika yang tepat karena performa turbin angin secara keseluruhan sangat bergantung pada kinerja aerodinamika sudunya [13].…”

Section: Review Kincir Angin Bambuunclassified

Panjer Kiling: Kincir Angin Tradisional Banyuwangi Sebagai Potensi Sumber Energi Terbarukan

Rubiono

Anam

2022

V-MAC

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Panjer Kiling is a local culture of Banyuwangi district in the form of a windmill made of bamboo and wood. Kiling is generally positioned in the rice fields to chase away birds or just become a farmer's entertainment. This article aims to analyze Panjer Kiling as a potential renewable energy source. The analysis was carried out with a literature review obtained from the publication of research results on the internet. The analysis begins with technical data obtained by surveying and interviewing a Kiling maker. The study was conducted for the performance of wind turbine blades and the development of application of bamboo material as wind turbine blades. The results of the study indicate that bamboo has a very high potential to be developed into wind turbine blade material. This shows that the Kiling has the potential to be developed into a small-scale wind energy source. Keywords: panjer, kiling, blade, turbine, wind

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Section: Review Kincir Angin Bambuunclassified

Panjer Kiling: Kincir Angin Tradisional Banyuwangi Sebagai Potensi Sumber Energi Terbarukan

Rubiono

Anam

2022

V-MAC

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“…It is an aggregation of blade leading-edge noise, boundary layer noise, and blade trailing-edge noise. The leading-edge noise is caused by the interaction of the blade with the stationary airflow in front of the turbine; the boundary layer noise refers to the noise radiated during the transition of the boundary layer near the trailing edge of the blade; the trailing-edge noise is produced by the shedding vortices in the wake area and the blunt trailing edge of the blade [16,17]. To ease understanding, the key regions in a wind turbine blade are illustrated in Figure 1.…”

Section: A New Technique For Reducing Blade Noisementioning

confidence: 99%

A Feasibility Study to Reduce Infrasound Emissions from Existing Wind Turbine Blades Using a Biomimetic Technique

et al. 2021

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Infrasound, i.e., low-frequency noise in the frequency range of 10–200 Hz, produced by rotating wind turbine blades has become a matter of concern because it is harmful to human health. Today, with the rapid increase of wind turbine size, this kind of noise is more worrying than ever. Although much effort has been made to design quiet wind turbine blades, today there is still a lack of effective techniques to reduce infrasound emissions from existing blades. To fill this gap in technology, a biomimetic technique that can be readily applied to reduce infrasound emissions of existing wind turbine blades is studied in this paper using both numerical simulation and experimental testing approaches. The numerical study of the technique is based on the analysis of the sound field distribution near the blade, which is derived by performing both aerodynamic and acoustic simulations of the blade. The experimental study of the technique is based on laboratory tests of two scale models of the blade. Both numerical and experimental studies have shown that the shedding vortices behind the blade can be successfully suppressed by semi-cylindrical rings wrapped on the blade. Consequently, both infrasound and the overall sound pressure level of the noise produced by the blade are significantly reduced. Although the rings fail to show good performance in reducing high-frequency noise, it is not a problem for human health because high-frequency noise is weak and moreover it attenuates rapidly as distance increases. The research also showed that the proposed technique can, not only reduce the infrasound produced by the blade, but can also improve the power coefficient of wind turbines.

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“…This noise limit varies throughout the world ranging from about 35 to 60 decibels, about the loudness of a refrigerator to the loudness of a normal convesation [18][19][20]. The main source of the turbine noise is the turbulence-induced noise from the wind flowing over the blades [21] and is the type of noise we explored in our research.…”

Section: Introductionmentioning

confidence: 99%

Trading off sound pressure level and average power production for wind farm layout optimization

Tingey

Ning

2017

Renewable Energy

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This research explores the trade-offs between a wind farm's average power production and noise impact on nearby observers. Two specific wind farm designs were studied and optimized using the FLORIS wake model and an acoustic model based on semi-empirical turbine noise calculations. It was found in the two wind farms that the average power production could be increased, up to 8.01% in one and 3.63% in the other, ignoring sound level considerations. Including a noise restriction in the optimization had a minimal impact on the optimal average power production within about a five-decibel range. Past this range, sound limitations decreased the wind farm's power production significantly. By analyzing average power production and sound pressure level together, we can take advantage of the multi-modality of the optimization to find solutions were noise impact can be improved with an insignificant effect on power production.

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Research status on aero-acoustic noise from wind turbine blades

Cited by 5 publications

References 38 publications

Panjer Kiling: Kincir Angin Tradisional Banyuwangi Sebagai Potensi Sumber Energi Terbarukan

Panjer Kiling: Kincir Angin Tradisional Banyuwangi Sebagai Potensi Sumber Energi Terbarukan

A Feasibility Study to Reduce Infrasound Emissions from Existing Wind Turbine Blades Using a Biomimetic Technique

Trading off sound pressure level and average power production for wind farm layout optimization

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