Investigation of Low-Frequency Noise of Horizontal Axis Wind Turbines by a Hybrid Approach
Noise pollution is known as the biggest environmental problem of horizontal axis wind turbines. The main part of the noise is in the range of Low Frequency Noise (LFN) since wind turbines rotate slowly. Several studies show that the LFN could have adverse effects on human health. In this study, the...
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| Format: | Article |
| Language: | English |
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Shahrood University of Technology
2021-07-01
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| Series: | Renewable Energy Research and Applications |
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| Online Access: | http://rera.shahroodut.ac.ir/article_2134_74f984482f9735ae7d6803bcad60e3b6.pdf |
| _version_ | 1818234152022966272 |
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| author | A. R. Bozorgi |
| author_facet | A. R. Bozorgi |
| author_sort | A. R. Bozorgi |
| collection | DOAJ |
| description | Noise pollution is known as the biggest environmental problem of horizontal axis wind turbines. The main part of the noise is in the range of Low Frequency Noise (LFN) since wind turbines rotate slowly. Several studies show that the LFN could have adverse effects on human health. In this study, the LFN generated by NREL VI wind turbine in wind speeds of 13 m/s is calculated by using a hybrid approach. In this approach, noise sources are defined on a data surface (DS), and then the noise propagating form the DS is calculated. The results show that a DS obtained by scaling the blade span with a size factor of 5 is appropriate for surrounding all main sources in this problem. It means, in addition to sources located on blade surface, a significant part of steady sources generating LFN is far from blades. On the other hand, the results show that tip vortices have no significant effect on the LFN. |
| first_indexed | 2024-12-12T11:33:31Z |
| format | Article |
| id | doaj.art-778e76a8782e45d3901210e0505cee42 |
| institution | Directory Open Access Journal |
| issn | 2717-252X 2676-7430 |
| language | English |
| last_indexed | 2024-12-12T11:33:31Z |
| publishDate | 2021-07-01 |
| publisher | Shahrood University of Technology |
| record_format | Article |
| series | Renewable Energy Research and Applications |
| spelling | doaj.art-778e76a8782e45d3901210e0505cee422022-12-22T00:25:44ZengShahrood University of TechnologyRenewable Energy Research and Applications2717-252X2676-74302021-07-012218518910.22044/rera.2021.10956.10642134Investigation of Low-Frequency Noise of Horizontal Axis Wind Turbines by a Hybrid ApproachA. R. Bozorgi0Department of Mechanical Engineering, Arak University of Technology, Daneshgah Street, Arak, Iran.Noise pollution is known as the biggest environmental problem of horizontal axis wind turbines. The main part of the noise is in the range of Low Frequency Noise (LFN) since wind turbines rotate slowly. Several studies show that the LFN could have adverse effects on human health. In this study, the LFN generated by NREL VI wind turbine in wind speeds of 13 m/s is calculated by using a hybrid approach. In this approach, noise sources are defined on a data surface (DS), and then the noise propagating form the DS is calculated. The results show that a DS obtained by scaling the blade span with a size factor of 5 is appropriate for surrounding all main sources in this problem. It means, in addition to sources located on blade surface, a significant part of steady sources generating LFN is far from blades. On the other hand, the results show that tip vortices have no significant effect on the LFN.http://rera.shahroodut.ac.ir/article_2134_74f984482f9735ae7d6803bcad60e3b6.pdfnoise pollutionhuman healthnrel vi |
| spellingShingle | A. R. Bozorgi Investigation of Low-Frequency Noise of Horizontal Axis Wind Turbines by a Hybrid Approach Renewable Energy Research and Applications noise pollution human health nrel vi |
| title | Investigation of Low-Frequency Noise of Horizontal Axis Wind Turbines by a Hybrid Approach |
| title_full | Investigation of Low-Frequency Noise of Horizontal Axis Wind Turbines by a Hybrid Approach |
| title_fullStr | Investigation of Low-Frequency Noise of Horizontal Axis Wind Turbines by a Hybrid Approach |
| title_full_unstemmed | Investigation of Low-Frequency Noise of Horizontal Axis Wind Turbines by a Hybrid Approach |
| title_short | Investigation of Low-Frequency Noise of Horizontal Axis Wind Turbines by a Hybrid Approach |
| title_sort | investigation of low frequency noise of horizontal axis wind turbines by a hybrid approach |
| topic | noise pollution human health nrel vi |
| url | http://rera.shahroodut.ac.ir/article_2134_74f984482f9735ae7d6803bcad60e3b6.pdf |
| work_keys_str_mv | AT arbozorgi investigationoflowfrequencynoiseofhorizontalaxiswindturbinesbyahybridapproach |