Appropriate Dynamic-Stall Models for Performance Predictions of VAWTs with NLF Blades
This paper illustrates the relative merits of using Natural Laminar Flow (NLF) airfoils in the design of Vertical Axis Wind Turbines (VAWT). This is achieved by the application of the double-multiple-streamtube model of Paraschivoiu to the performance predictions of VAWTs equipped with conventional...
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| Format: | Article |
| Language: | English |
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Wiley
1998-01-01
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| Series: | International Journal of Rotating Machinery |
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| Online Access: | http://dx.doi.org/10.1155/S1023621X98000116 |
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| _version_ | 1832556307641532416 |
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| author | Christian Masson Christophe Leclerc Ion Paraschivoiu |
| author_facet | Christian Masson Christophe Leclerc Ion Paraschivoiu |
| author_sort | Christian Masson |
| collection | DOAJ |
| description | This paper illustrates the relative merits of using Natural Laminar Flow (NLF) airfoils in the design of Vertical Axis Wind Turbines (VAWT). This is achieved by the application of the double-multiple-streamtube model of Paraschivoiu to the performance predictions of VAWTs equipped with conventional and NLF blades. Furthermore, in order to clearly illustrate the potential benefit of reducing the drag, the individual contributions of lift and drag to power are presented. The dynamic-stall phenomena are modelled using the method of Gormont as modified by several researchers. Among the various implementations of this dynamic-stall model available in the literature, the most appropriate and general for NLF applications has been identified through detailed comparisons between predicted performances and experimental data. This selection process is presented in the paper. It has been demonstrated that the use ofNLF airfoils in VAWT applications can lead to significant improvements with respect to conventional design only in a very low wind speed range, the extent of which is negligible with respect to the VAWT operational wind speeds. |
| format | Article |
| id | doaj-art-f81679eb502847b1ba04af155d7e83fe |
| institution | Kabale University |
| issn | 1023-621X |
| language | English |
| publishDate | 1998-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-f81679eb502847b1ba04af155d7e83fe2025-02-03T05:45:47ZengWileyInternational Journal of Rotating Machinery1023-621X1998-01-014212913910.1155/S1023621X98000116Appropriate Dynamic-Stall Models for Performance Predictions of VAWTs with NLF BladesChristian Masson0Christophe Leclerc1Ion Paraschivoiu2Bombardier Aeronautical Chair, École Polytechnique, Montréal H3C 3A7, CanadaBombardier Aeronautical Chair, École Polytechnique, Montréal H3C 3A7, CanadaBombardier Aeronautical Chair, École Polytechnique, Montréal H3C 3A7, CanadaThis paper illustrates the relative merits of using Natural Laminar Flow (NLF) airfoils in the design of Vertical Axis Wind Turbines (VAWT). This is achieved by the application of the double-multiple-streamtube model of Paraschivoiu to the performance predictions of VAWTs equipped with conventional and NLF blades. Furthermore, in order to clearly illustrate the potential benefit of reducing the drag, the individual contributions of lift and drag to power are presented. The dynamic-stall phenomena are modelled using the method of Gormont as modified by several researchers. Among the various implementations of this dynamic-stall model available in the literature, the most appropriate and general for NLF applications has been identified through detailed comparisons between predicted performances and experimental data. This selection process is presented in the paper. It has been demonstrated that the use ofNLF airfoils in VAWT applications can lead to significant improvements with respect to conventional design only in a very low wind speed range, the extent of which is negligible with respect to the VAWT operational wind speeds.http://dx.doi.org/10.1155/S1023621X98000116VAWTDouble-Multiple-Streamtube ModelDynamic StallNLF Airfoil. |
| spellingShingle | Christian Masson Christophe Leclerc Ion Paraschivoiu Appropriate Dynamic-Stall Models for Performance Predictions of VAWTs with NLF Blades International Journal of Rotating Machinery VAWT Double-Multiple-Streamtube Model Dynamic Stall NLF Airfoil. |
| title | Appropriate Dynamic-Stall Models for Performance
Predictions of VAWTs with NLF Blades |
| title_full | Appropriate Dynamic-Stall Models for Performance
Predictions of VAWTs with NLF Blades |
| title_fullStr | Appropriate Dynamic-Stall Models for Performance
Predictions of VAWTs with NLF Blades |
| title_full_unstemmed | Appropriate Dynamic-Stall Models for Performance
Predictions of VAWTs with NLF Blades |
| title_short | Appropriate Dynamic-Stall Models for Performance
Predictions of VAWTs with NLF Blades |
| title_sort | appropriate dynamic stall models for performance predictions of vawts with nlf blades |
| topic | VAWT Double-Multiple-Streamtube Model Dynamic Stall NLF Airfoil. |
| url | http://dx.doi.org/10.1155/S1023621X98000116 |
| work_keys_str_mv | AT christianmasson appropriatedynamicstallmodelsforperformancepredictionsofvawtswithnlfblades AT christopheleclerc appropriatedynamicstallmodelsforperformancepredictionsofvawtswithnlfblades AT ionparaschivoiu appropriatedynamicstallmodelsforperformancepredictionsofvawtswithnlfblades |