Multi-element ducts for ducted wind turbines: a numerical study
<p>Multi-element ducts are used to improve the aerodynamic performance of ducted wind turbines (DWTs). Steady-state, two-dimensional computational fluid dynamics (CFD) simulations are performed for a multi-element duct geometry consisting of a duct and a flap; the goal is to evaluate the effec...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2019-08-01
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| Series: | Wind Energy Science |
| Online Access: | https://www.wind-energ-sci.net/4/439/2019/wes-4-439-2019.pdf |
| _version_ | 1811331476144259072 |
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| author | V. V. Dighe F. Avallone O. Igra G. van Bussel |
| author_facet | V. V. Dighe F. Avallone O. Igra G. van Bussel |
| author_sort | V. V. Dighe |
| collection | DOAJ |
| description | <p>Multi-element ducts are used to improve the aerodynamic performance of ducted wind turbines (DWTs). Steady-state, two-dimensional computational fluid dynamics (CFD) simulations are performed for a multi-element duct geometry consisting of a duct and a flap; the goal is to evaluate the effects on the aerodynamic performance of the radial gap length and the deflection angle of the flap. Solutions from inviscid and viscous flow calculations are compared. It is found that increasing the radial gap length results in an augmentation of the total thrust generated by the DWT, whereas a larger deflection angle has an opposite effect. Reasonable to good agreement is seen between the inviscid and viscous flow calculations, except for multi-element duct configurations characterized by large flap deflection angles. The viscous effects become stronger at large flap deflection angles, and the inviscid calculations are incapable of taking this phenomenon into account.</p> |
| first_indexed | 2024-04-13T16:21:00Z |
| format | Article |
| id | doaj.art-ab16c170593b4f94bb91a4362c5af71a |
| institution | Directory Open Access Journal |
| issn | 2366-7443 2366-7451 |
| language | English |
| last_indexed | 2024-04-13T16:21:00Z |
| publishDate | 2019-08-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Wind Energy Science |
| spelling | doaj.art-ab16c170593b4f94bb91a4362c5af71a2022-12-22T02:39:56ZengCopernicus PublicationsWind Energy Science2366-74432366-74512019-08-01443944910.5194/wes-4-439-2019Multi-element ducts for ducted wind turbines: a numerical studyV. V. Dighe0F. Avallone1O. Igra2G. van Bussel3Wind Energy Research Group, Faculty of Aerospace Engineering, TU Delft, Delft, the NetherlandsWind Energy Research Group, Faculty of Aerospace Engineering, TU Delft, Delft, the NetherlandsDepartment of Mechanical Engineering, Ben-Gurion University of Negev, Beersheva, IsraelWind Energy Research Group, Faculty of Aerospace Engineering, TU Delft, Delft, the Netherlands<p>Multi-element ducts are used to improve the aerodynamic performance of ducted wind turbines (DWTs). Steady-state, two-dimensional computational fluid dynamics (CFD) simulations are performed for a multi-element duct geometry consisting of a duct and a flap; the goal is to evaluate the effects on the aerodynamic performance of the radial gap length and the deflection angle of the flap. Solutions from inviscid and viscous flow calculations are compared. It is found that increasing the radial gap length results in an augmentation of the total thrust generated by the DWT, whereas a larger deflection angle has an opposite effect. Reasonable to good agreement is seen between the inviscid and viscous flow calculations, except for multi-element duct configurations characterized by large flap deflection angles. The viscous effects become stronger at large flap deflection angles, and the inviscid calculations are incapable of taking this phenomenon into account.</p>https://www.wind-energ-sci.net/4/439/2019/wes-4-439-2019.pdf |
| spellingShingle | V. V. Dighe F. Avallone O. Igra G. van Bussel Multi-element ducts for ducted wind turbines: a numerical study Wind Energy Science |
| title | Multi-element ducts for ducted wind turbines: a numerical study |
| title_full | Multi-element ducts for ducted wind turbines: a numerical study |
| title_fullStr | Multi-element ducts for ducted wind turbines: a numerical study |
| title_full_unstemmed | Multi-element ducts for ducted wind turbines: a numerical study |
| title_short | Multi-element ducts for ducted wind turbines: a numerical study |
| title_sort | multi element ducts for ducted wind turbines a numerical study |
| url | https://www.wind-energ-sci.net/4/439/2019/wes-4-439-2019.pdf |
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