Ιδρυματικό Αποθετήριο
Πολυτεχνείο Κρήτης
Πολυτεχνείο Κρήτης
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| URI | http://purl.tuc.gr/dl/dias/29865E90-E740-4992-96CC-6C45C4D9DA0E | - |
| Αναγνωριστικό | http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=2669289 | - |
| Αναγνωριστικό | https://doi.org/10.1115/IMECE2017-70288 | - |
| Γλώσσα | en | - |
| Μέγεθος | 10 pages | en |
| Τίτλος | Assessment of a modified blade element momentum methodology for diffuser augmented wind turbines | en |
| Δημιουργός | Leloudas Stavros | en |
| Δημιουργός | Λελουδας Σταυρος | el |
| Δημιουργός | Lygidakis Georgios | en |
| Δημιουργός | Λυγιδακης Γεωργιος | el |
| Δημιουργός | Nikolos Ioannis | en |
| Δημιουργός | Νικολος Ιωαννης | el |
| Εκδότης | American Society of Mechanical Engineers | en |
| Περίληψη | The Blade Element Momentum (BEM) theory is nowadays the cornerstone of the horizontal axis wind turbine design, as its application allows for the accurate aerodynamic simulation and power output prediction of wind turbine rotors in a remarkably short period of time. Therefore, efforts have been made for the extension of the classic BEM theory to the performance analysis of Diffuser Augmented Wind Turbines (DAWTs) as well. In this study, the development and assessment of such an in-house BEM code are presented. The proposed computational model is based on the modification of the momentum part of the classical BEM theory; thus, it is capable to account for the diffuser's effect on the calculation of the axial and tangential induction factors, through the utilization of the velocity speed-up distribution over the rotor plane of the unloaded diffuser. Furthermore, a detailed Glauert's correction model, which employs Buhl's modification, specially tailored for the DAWT case is included, to deal with the high values of the axial induction factor. The accuracy of the model is assessed against numerical and experimental results available in the literature, while the impact of the Prandtl's tip loss correction model on the rotor's predicted power output is also examined. | en |
| Τύπος | Πλήρης Δημοσίευση σε Συνέδριο | el |
| Τύπος | Conference Full Paper | en |
| Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
| Ημερομηνία | 2018-05-31 | - |
| Ημερομηνία Δημοσίευσης | 2017 | - |
| Θεματική Κατηγορία | Actuator disk | en |
| Θεματική Κατηγορία | BEM model | en |
| Θεματική Κατηγορία | DAWT | en |
| Θεματική Κατηγορία | Diffuser | en |
| Θεματική Κατηγορία | Lowfidelity approach | en |
| Θεματική Κατηγορία | One-dimensional theory | en |
| Θεματική Κατηγορία | Wind turbine | en |
| Βιβλιογραφική Αναφορά | S. Leloudas, G. N. Lygidakis and I. K. Nikolos, "Assessment of a modified blade element momentum methodology for diffuser augmented wind turbines," in ASME 2017 International Mechanical Engineering Congress and Exposition, 2017. doi: 10.1115/IMECE2017-70288 | en |
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