Recovery processes in coastal wind farms under sea-breeze conditions

<p>With the rapid growth in offshore wind energy, it is important to understand the dynamics of offshore wind farms. Most of the offshore wind farms are currently installed in coastal regions where they are often affected by sea-breezes. In this work, we quantitatively study the recovery proce...

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Autores principales: T. Gupta, S. Baidya Roy
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Lenguaje:EN
Publicado: Copernicus Publications 2021
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spelling oai:doaj.org-article:27052e2fdc474610b1d649509fe9d2612021-11-22T11:59:18ZRecovery processes in coastal wind farms under sea-breeze conditions10.5194/adgeo-56-129-20211680-73401680-7359https://doaj.org/article/27052e2fdc474610b1d649509fe9d2612021-11-01T00:00:00Zhttps://adgeo.copernicus.org/articles/56/129/2021/adgeo-56-129-2021.pdfhttps://doaj.org/toc/1680-7340https://doaj.org/toc/1680-7359<p>With the rapid growth in offshore wind energy, it is important to understand the dynamics of offshore wind farms. Most of the offshore wind farms are currently installed in coastal regions where they are often affected by sea-breezes. In this work, we quantitatively study the recovery processes for coastal wind farms under sea-breeze conditions. We use a modified Borne's method to identify sea breeze days off the west coast of India in the Arabian Sea. For the identified sea breeze days, we simulate a hypothetical wind farm covering <span class="inline-formula">50×50 km<sup>2</sup></span> area using the Weather Research and Forecasting (WRF) model driven by realistic initial and boundary conditions. We use three wind farm layouts with the turbines spaced 0.5, 1, and 2 km apart. The results show an interesting power generation pattern with a peak at the upwind edge and another peak at the downwind edge due to sea breeze. Wind farms affect the circulation patterns, but the effects of these modifications are very weak compared to the sea breezes. Vertical recovery is the dominant factor with more than half of the momentum extracted by wind turbines being replenished by vertical turbulent mixing. However, horizontal recovery can also play a strong role for sparsely packed wind farms. Horizontal recovery is stronger at the edges where the wind speeds are higher whereas vertical recovery is stronger in the interior of the wind farms. This is one of the first studies to examine replenishment processes in offshore wind farms under sea breeze conditions. It can play an important role in advancing our understanding wind farm-atmospheric boundary layer interactions.</p>T. GuptaS. Baidya RoyCopernicus PublicationsarticleScienceQGeologyQE1-996.5Dynamic and structural geologyQE500-639.5ENAdvances in Geosciences, Vol 56, Pp 129-139 (2021)
institution DOAJ
collection DOAJ
language EN
topic Science
Q
Geology
QE1-996.5
Dynamic and structural geology
QE500-639.5
spellingShingle Science
Q
Geology
QE1-996.5
Dynamic and structural geology
QE500-639.5
T. Gupta
S. Baidya Roy
Recovery processes in coastal wind farms under sea-breeze conditions
description <p>With the rapid growth in offshore wind energy, it is important to understand the dynamics of offshore wind farms. Most of the offshore wind farms are currently installed in coastal regions where they are often affected by sea-breezes. In this work, we quantitatively study the recovery processes for coastal wind farms under sea-breeze conditions. We use a modified Borne's method to identify sea breeze days off the west coast of India in the Arabian Sea. For the identified sea breeze days, we simulate a hypothetical wind farm covering <span class="inline-formula">50×50 km<sup>2</sup></span> area using the Weather Research and Forecasting (WRF) model driven by realistic initial and boundary conditions. We use three wind farm layouts with the turbines spaced 0.5, 1, and 2 km apart. The results show an interesting power generation pattern with a peak at the upwind edge and another peak at the downwind edge due to sea breeze. Wind farms affect the circulation patterns, but the effects of these modifications are very weak compared to the sea breezes. Vertical recovery is the dominant factor with more than half of the momentum extracted by wind turbines being replenished by vertical turbulent mixing. However, horizontal recovery can also play a strong role for sparsely packed wind farms. Horizontal recovery is stronger at the edges where the wind speeds are higher whereas vertical recovery is stronger in the interior of the wind farms. This is one of the first studies to examine replenishment processes in offshore wind farms under sea breeze conditions. It can play an important role in advancing our understanding wind farm-atmospheric boundary layer interactions.</p>
format article
author T. Gupta
S. Baidya Roy
author_facet T. Gupta
S. Baidya Roy
author_sort T. Gupta
title Recovery processes in coastal wind farms under sea-breeze conditions
title_short Recovery processes in coastal wind farms under sea-breeze conditions
title_full Recovery processes in coastal wind farms under sea-breeze conditions
title_fullStr Recovery processes in coastal wind farms under sea-breeze conditions
title_full_unstemmed Recovery processes in coastal wind farms under sea-breeze conditions
title_sort recovery processes in coastal wind farms under sea-breeze conditions
publisher Copernicus Publications
publishDate 2021
url https://doaj.org/article/27052e2fdc474610b1d649509fe9d261
work_keys_str_mv AT tgupta recoveryprocessesincoastalwindfarmsunderseabreezeconditions
AT sbaidyaroy recoveryprocessesincoastalwindfarmsunderseabreezeconditions
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