A Comparative Analysis of Actuator-Based Turbine Structure Parametrizations for High-Fidelity Modeling of Utility-Scale Wind Turbines under Neutral Atmospheric Conditions
This study compared the efficacy of the actuator line and actuator surface models in carrying out large-eddy simulations of a utility-scale wind turbine. A large-eddy simulation with the actuator surface and line models was employed to study the wake flow and power production of the turbine. While b...
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| Format: | Article |
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MDPI AG
2024-02-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/17/3/753 |
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| author | Christian Santoni Fotis Sotiropoulos Ali Khosronejad |
| author_facet | Christian Santoni Fotis Sotiropoulos Ali Khosronejad |
| author_sort | Christian Santoni |
| collection | DOAJ |
| description | This study compared the efficacy of the actuator line and actuator surface models in carrying out large-eddy simulations of a utility-scale wind turbine. A large-eddy simulation with the actuator surface and line models was employed to study the wake flow and power production of the turbine. While both the actuator models were employed for the blade representation, the nacelle was modeled using the actuator surface approach. Both of the actuator models demonstrated agreement in the mean velocity field, power production, and turbulence kinetic energy of the wake flow. Comparing the wake flow, power production, and turbulence kinetic energy results, it was found that the mean discrepancy between the two models was <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.6</mn><mo>%</mo></mrow></semantics></math></inline-formula>, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.3</mn><mo>%</mo></mrow></semantics></math></inline-formula>, and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2.3</mn><mo>%</mo></mrow></semantics></math></inline-formula>, respectively. Despite the minor discrepancies, both actuator models accurately captured the hub vortex in the wake of the nacelle, evidenced by an energy peak in wind speed spectra at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>f</mi><mo>/</mo><msub><mi>f</mi><mi>ω</mi></msub><mo>≈</mo><mn>0.34</mn></mrow></semantics></math></inline-formula>. |
| first_indexed | 2024-03-08T03:57:46Z |
| format | Article |
| id | doaj.art-79e932824fe642db86dc55199baca15e |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-08T03:57:46Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-79e932824fe642db86dc55199baca15e2024-02-09T15:11:52ZengMDPI AGEnergies1996-10732024-02-0117375310.3390/en17030753A Comparative Analysis of Actuator-Based Turbine Structure Parametrizations for High-Fidelity Modeling of Utility-Scale Wind Turbines under Neutral Atmospheric ConditionsChristian Santoni0Fotis Sotiropoulos1Ali Khosronejad2Department of Civil Engineering, Stony Brook University, Stony Brook, NY 11794, USAMechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, VA 23284, USADepartment of Civil Engineering, Stony Brook University, Stony Brook, NY 11794, USAThis study compared the efficacy of the actuator line and actuator surface models in carrying out large-eddy simulations of a utility-scale wind turbine. A large-eddy simulation with the actuator surface and line models was employed to study the wake flow and power production of the turbine. While both the actuator models were employed for the blade representation, the nacelle was modeled using the actuator surface approach. Both of the actuator models demonstrated agreement in the mean velocity field, power production, and turbulence kinetic energy of the wake flow. Comparing the wake flow, power production, and turbulence kinetic energy results, it was found that the mean discrepancy between the two models was <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.6</mn><mo>%</mo></mrow></semantics></math></inline-formula>, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.3</mn><mo>%</mo></mrow></semantics></math></inline-formula>, and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2.3</mn><mo>%</mo></mrow></semantics></math></inline-formula>, respectively. Despite the minor discrepancies, both actuator models accurately captured the hub vortex in the wake of the nacelle, evidenced by an energy peak in wind speed spectra at <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>f</mi><mo>/</mo><msub><mi>f</mi><mi>ω</mi></msub><mo>≈</mo><mn>0.34</mn></mrow></semantics></math></inline-formula>.https://www.mdpi.com/1996-1073/17/3/753large-eddy simulationwind turbineactuator line modelactuator surface model |
| spellingShingle | Christian Santoni Fotis Sotiropoulos Ali Khosronejad A Comparative Analysis of Actuator-Based Turbine Structure Parametrizations for High-Fidelity Modeling of Utility-Scale Wind Turbines under Neutral Atmospheric Conditions Energies large-eddy simulation wind turbine actuator line model actuator surface model |
| title | A Comparative Analysis of Actuator-Based Turbine Structure Parametrizations for High-Fidelity Modeling of Utility-Scale Wind Turbines under Neutral Atmospheric Conditions |
| title_full | A Comparative Analysis of Actuator-Based Turbine Structure Parametrizations for High-Fidelity Modeling of Utility-Scale Wind Turbines under Neutral Atmospheric Conditions |
| title_fullStr | A Comparative Analysis of Actuator-Based Turbine Structure Parametrizations for High-Fidelity Modeling of Utility-Scale Wind Turbines under Neutral Atmospheric Conditions |
| title_full_unstemmed | A Comparative Analysis of Actuator-Based Turbine Structure Parametrizations for High-Fidelity Modeling of Utility-Scale Wind Turbines under Neutral Atmospheric Conditions |
| title_short | A Comparative Analysis of Actuator-Based Turbine Structure Parametrizations for High-Fidelity Modeling of Utility-Scale Wind Turbines under Neutral Atmospheric Conditions |
| title_sort | comparative analysis of actuator based turbine structure parametrizations for high fidelity modeling of utility scale wind turbines under neutral atmospheric conditions |
| topic | large-eddy simulation wind turbine actuator line model actuator surface model |
| url | https://www.mdpi.com/1996-1073/17/3/753 |
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