Accuracy and consistency of CFD and engineering models for simulating vertical axis wind turbine loads
Authors:
- Galih Bangga,
- Amgad Dessoky,
- Zhenlong Wu,
- Krzysztof Rogowski,
- Martin O.L. Hansen
Abstract
The present work is intended to assess the ability of state-of-the-art approaches with various fidelity levels for accurate load predictions on vertical axis wind turbines (VAWT). The assessments are conducted by employing the Double-Multiple-Streamtube (DMS), Improved-DMS (IDMS), Unsteady Blade Element Momentum (UBEM), Vortex Model and fully resolved computational fluid dynamics (CFD) approaches. For the later case, three different codes are employed, namely FLOWer, TAU and Ansys Fluent. Three different turbines from low up to high rotor solidity (0.23, 0.53 and 1.325) are selected as the case studies. The prediction results are compared with experimental data at various operating ranges in terms of integral and azimuthal loads. The studies demonstrate that there is consistent agreement between engineering models at lightly loaded cases for the power curve prediction. The discrepancy at high tip speed ratio (λ) is caused by wake expansion, unsteady and decambering effects. In contrast, CFD predictions hardly show consistent power prediction but deliver accurate thrust values.
- Record ID
- WUTe2c80ff42ce9467f9773384a402b283b
- Author
- Journal series
- Energy, ISSN 0360-5442, e-ISSN 1873-6785
- Issue year
- 2020
- Vol
- 206
- ASJC Classification
- ;
- Abstract in original language
- The present work is intended to assess the ability of state-of-the-art approaches with various fidelity levels for accurate load predictions on vertical axis wind turbines (VAWT). The assessments are conducted by employing the Double-Multiple-Streamtube (DMS), Improved-DMS (IDMS), Unsteady Blade Element Momentum (UBEM), Vortex Model and fully resolved computational fluid dynamics (CFD) approaches. For the later case, three different codes are employed, namely FLOWer, TAU and Ansys Fluent. Three different turbines from low up to high rotor solidity (0.23, 0.53 and 1.325) are selected as the case studies. The prediction results are compared with experimental data at various operating ranges in terms of integral and azimuthal loads. The studies demonstrate that there is consistent agreement between engineering models at lightly loaded cases for the power curve prediction. The discrepancy at high tip speed ratio (λ) is caused by wake expansion, unsteady and decambering effects. In contrast, CFD predictions hardly show consistent power prediction but deliver accurate thrust values.
- DOI
- DOI:10.1016/j.energy.2020.118087 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/abs/pii/S0360544220311944 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 200
- Score source
- journalList
- Score
- = 200.0, 12-05-2022, ArticleFromJournal
- Publication indicators
- = 14; = 1; = 15; : 2018 = 1.822; : 2020 (2 years) = 7.147 - 2020 (5 years) =6.845
- Citation count
- 19
Share
- Uniform Resource Identifier
- https://repo.pw.edu.pl/info/article/WUTe2c80ff42ce9467f9773384a402b283b/
- URN
urn:pw-repo:WUTe2c80ff42ce9467f9773384a402b283b
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.