Prediction of the impact of support structures on the aerodynamic performance of large wind farms
An extended theoretical model based on a two-scale coupled momentum balance method is proposed to estimate aerodynamic effects of wind turbine towers on the performance of both ideal (infinitely large) and more realistic (large but finite-size) wind farms. A key implication of the extended model is...
| Prif Awduron: | , , |
|---|---|
| Fformat: | Journal article |
| Iaith: | English |
| Cyhoeddwyd: |
AIP Publishing
2019
|
| _version_ | 1826309159089340416 |
|---|---|
| author | Ma, L Nishino, T Antoniadis, AF |
| author_facet | Ma, L Nishino, T Antoniadis, AF |
| author_sort | Ma, L |
| collection | OXFORD |
| description | An extended theoretical model based on a two-scale coupled momentum balance method is proposed to estimate aerodynamic effects of wind turbine towers on the performance of both ideal (infinitely large) and more realistic (large but finite-size) wind farms. A key implication of the extended model is that a normalized support-structure drag, (AS/A)×C*D, where A and AS are the rotor swept area and support-structure frontal projected area, respectively, and C*D is an effective support-structure drag coefficient, may play an important role in the design of future large wind farms. For the infinitely large case, the theoretical model shows that the optimal turbine spacing should increase with the value of (AS/A)×C*D, whereas for the large finite case, this also depends on an additional parameter describing the response characteristics of the atmospheric boundary layer to the total farm drag. To validate the theoretical model for the infinitely large case, Wall-Modeled Large-Eddy Simulations of a periodic array of actuator disks with and without support structures are conducted. The results show a reasonably good agreement (within 10% in the prediction of power) with the theoretical model. |
| first_indexed | 2024-03-07T07:31:30Z |
| format | Journal article |
| id | oxford-uuid:2f8c3bae-0e1f-4e29-90d5-df9cb9c4b6c9 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T07:31:30Z |
| publishDate | 2019 |
| publisher | AIP Publishing |
| record_format | dspace |
| spelling | oxford-uuid:2f8c3bae-0e1f-4e29-90d5-df9cb9c4b6c92023-01-23T11:26:30ZPrediction of the impact of support structures on the aerodynamic performance of large wind farmsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:2f8c3bae-0e1f-4e29-90d5-df9cb9c4b6c9EnglishSymplectic Elements at OxfordAIP Publishing2019Ma, LNishino, TAntoniadis, AFAn extended theoretical model based on a two-scale coupled momentum balance method is proposed to estimate aerodynamic effects of wind turbine towers on the performance of both ideal (infinitely large) and more realistic (large but finite-size) wind farms. A key implication of the extended model is that a normalized support-structure drag, (AS/A)×C*D, where A and AS are the rotor swept area and support-structure frontal projected area, respectively, and C*D is an effective support-structure drag coefficient, may play an important role in the design of future large wind farms. For the infinitely large case, the theoretical model shows that the optimal turbine spacing should increase with the value of (AS/A)×C*D, whereas for the large finite case, this also depends on an additional parameter describing the response characteristics of the atmospheric boundary layer to the total farm drag. To validate the theoretical model for the infinitely large case, Wall-Modeled Large-Eddy Simulations of a periodic array of actuator disks with and without support structures are conducted. The results show a reasonably good agreement (within 10% in the prediction of power) with the theoretical model. |
| spellingShingle | Ma, L Nishino, T Antoniadis, AF Prediction of the impact of support structures on the aerodynamic performance of large wind farms |
| title | Prediction of the impact of support structures on the aerodynamic performance of large wind farms |
| title_full | Prediction of the impact of support structures on the aerodynamic performance of large wind farms |
| title_fullStr | Prediction of the impact of support structures on the aerodynamic performance of large wind farms |
| title_full_unstemmed | Prediction of the impact of support structures on the aerodynamic performance of large wind farms |
| title_short | Prediction of the impact of support structures on the aerodynamic performance of large wind farms |
| title_sort | prediction of the impact of support structures on the aerodynamic performance of large wind farms |
| work_keys_str_mv | AT mal predictionoftheimpactofsupportstructuresontheaerodynamicperformanceoflargewindfarms AT nishinot predictionoftheimpactofsupportstructuresontheaerodynamicperformanceoflargewindfarms AT antoniadisaf predictionoftheimpactofsupportstructuresontheaerodynamicperformanceoflargewindfarms |