Large eddy simulation study of the humidity variation in the shadow of a large wind farm
Abstract Numerous studies have shown that wind turbine wakes within a large wind farm bring about changes to both the dynamics and thermodynamics of the atmospheric boundary layers (ABL). Previously, we investigated the relative humidity budget within a wind farm via field measurements in the near‐w...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-02-01
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| Series: | Wind Energy |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/we.2434 |
| _version_ | 1818522531084107776 |
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| author | John Stephen Haywood Adrian Sescu Kevin Allan Adkins |
| author_facet | John Stephen Haywood Adrian Sescu Kevin Allan Adkins |
| author_sort | John Stephen Haywood |
| collection | DOAJ |
| description | Abstract Numerous studies have shown that wind turbine wakes within a large wind farm bring about changes to both the dynamics and thermodynamics of the atmospheric boundary layers (ABL). Previously, we investigated the relative humidity budget within a wind farm via field measurements in the near‐wake region and large eddy simulations (LES). The effect of the compounding wakes within a large wind farm on the relative humidity was also investigated by LES. In this study, we investigate how the areas of relative humidity variation, that was observed in the near‐wake, develop downstream in the shadow region of a large wind farm. To this end, LES of a wind farm consisting of 8x6 wind turbines with periodic boundary condition in the lateral direction (inferring an infinitely wide farm) interacting with a stable ABL is carried out. Two wind farm layouts, aligned and staggered, are considered in the analysis and the results from both configurations are compared to each other. It is observed that a decrease of relative humidity underneath the hub height and an increase above the hub height build up within the wind farm, and are maintained in the downstream of the farm for long distances. The staggered farm layout is more effective in keeping a more elongated region of low relative humidity underneath the hub, when compared to the aligned layout. |
| first_indexed | 2024-12-11T05:34:27Z |
| format | Article |
| id | doaj.art-9e946ecfdfdd43df9641078cfd4cbce5 |
| institution | Directory Open Access Journal |
| issn | 1095-4244 1099-1824 |
| language | English |
| last_indexed | 2024-12-11T05:34:27Z |
| publishDate | 2020-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | Wind Energy |
| spelling | doaj.art-9e946ecfdfdd43df9641078cfd4cbce52022-12-22T01:19:20ZengWileyWind Energy1095-42441099-18242020-02-0123242343110.1002/we.2434Large eddy simulation study of the humidity variation in the shadow of a large wind farmJohn Stephen Haywood0Adrian Sescu1Kevin Allan Adkins2Department of Aerospace Engineering Mississippi State University Mississippi United StatesDepartment of Aerospace Engineering Mississippi State University Mississippi United StatesDepartment of Aeronautical Science Embry Riddle Aeronautical Engineering Florida United StatesAbstract Numerous studies have shown that wind turbine wakes within a large wind farm bring about changes to both the dynamics and thermodynamics of the atmospheric boundary layers (ABL). Previously, we investigated the relative humidity budget within a wind farm via field measurements in the near‐wake region and large eddy simulations (LES). The effect of the compounding wakes within a large wind farm on the relative humidity was also investigated by LES. In this study, we investigate how the areas of relative humidity variation, that was observed in the near‐wake, develop downstream in the shadow region of a large wind farm. To this end, LES of a wind farm consisting of 8x6 wind turbines with periodic boundary condition in the lateral direction (inferring an infinitely wide farm) interacting with a stable ABL is carried out. Two wind farm layouts, aligned and staggered, are considered in the analysis and the results from both configurations are compared to each other. It is observed that a decrease of relative humidity underneath the hub height and an increase above the hub height build up within the wind farm, and are maintained in the downstream of the farm for long distances. The staggered farm layout is more effective in keeping a more elongated region of low relative humidity underneath the hub, when compared to the aligned layout.https://doi.org/10.1002/we.2434atmospheric boundary layerlarge eddy simulationswind farm |
| spellingShingle | John Stephen Haywood Adrian Sescu Kevin Allan Adkins Large eddy simulation study of the humidity variation in the shadow of a large wind farm Wind Energy atmospheric boundary layer large eddy simulations wind farm |
| title | Large eddy simulation study of the humidity variation in the shadow of a large wind farm |
| title_full | Large eddy simulation study of the humidity variation in the shadow of a large wind farm |
| title_fullStr | Large eddy simulation study of the humidity variation in the shadow of a large wind farm |
| title_full_unstemmed | Large eddy simulation study of the humidity variation in the shadow of a large wind farm |
| title_short | Large eddy simulation study of the humidity variation in the shadow of a large wind farm |
| title_sort | large eddy simulation study of the humidity variation in the shadow of a large wind farm |
| topic | atmospheric boundary layer large eddy simulations wind farm |
| url | https://doi.org/10.1002/we.2434 |
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